Table of Contents

Component Description

The cardiovascular (CV) fitness component was implemented in the NHANES in 1999. The goals of this component are to provide:

  1. nationally representative data on cardiovascular fitness;
  2. prevalence estimates of persons at risk due to poor physical fitness; and
  3. data to study the association between cardiovascular fitness and other health conditions and risk factors, such as obesity, cardiovascular disease, diabetes, hypertension, and activity and dietary patterns.

Eligible Sample

Survey participants aged 12-49 years old are eligible for the CV fitness component.

Participants are excluded from this component based on medical conditions, medications, physical limitations, limits on heart rate and blood pressure, and irregular heart rates. The screening is done prior to the treadmill test using questions in the household interview, questions administered by the physician in the NHANES Mobile Examination Center (MEC) and aspects of the physician examination such as measurements of heart rate and blood pressure. The list of exclusion criteria used for the CV fitness component is attached as Appendix A.

Protocol and Procedure

The CV fitness exam was performed by trained health technicians. The protocol is a submaximal exercise test. Based on gender, age, body mass index, and self-reported level of physical activity, participants are assigned to one of eight treadmill test protocols. The goal of each protocol is to elicit a heart rate that is approximately 75 percent of the age-predicted maximum (220-age) by the end of the test. Each protocol includes a 2-minute warm-up, two 3-minute exercise stages, and a 2-minute cool down period.

Heart rate was monitored continuously using an automated monitor with four electrodes connected to thorax and abdomen of the participant and was recorded at the end of warm-up, each exercise stage, and each minute of recovery. Blood pressure was measured at the end of each stage. At the end of warm-up and each exercise stage, participants were asked to rate their perceived exertion using the Borg scale.
The main outcome of this component is the estimated maximal oxygen uptake (VO2max). Based on gender and age specific criteria, the estimated VO2max is also categorized and reported as “low”, “moderate” or “high” level of cardiovascular fitness in the present dataset.

Detailed descriptions of the protocol are provided in the NHANES Cardiovascular Fitness Procedure Manual (National Center for Health Statistics, 2004).

Quality Assurance & Quality Control

Health technicians are regularly monitored by NHANES supervisory staff and expert consultants from the Cooper Institute using a structured performance evaluation and an annual recertification process. Retraining sessions are conducted periodically with the technicians to reinforce the proper protocols and technique. Inspection, calibration, and maintenance of the equipment and supplies are also performed on a regular basis.

As part of on-going quality control practice, all the data are reviewed systematically for logical inconsistencies and technician errors.

Chapter 6 of the NHANES Cardiovascular Fitness Procedure Manual details the quality control procedures.

Data Processing and Editing

During the data processing, edits were made to ensure the logical consistency and analytic usefulness of the data. Extreme values were reviewed and cross-checked with other available data. When there was insufficient information to conclude that the values were invalid, they were retained in the data set.

Variable specific editing:

CVDEXSTS (CV fitness exam status)
This derived variable indicates the following for each participants:

  1. VO2max estimated.
  2. Tested but VO2max estimate missing - data obtained during the treadmill test were insufficient in calculating VO2max.
  3. Did not participate in the treadmill test.

CVDEXCMT (Comment code for the exam status)
This derived variable denotes the reason the treadmill test was not done or data are missing.

“0” – None: the exam was completed with no missing data point present.
“1” – Met exclusion criteria: exam was not done due to the participant met the exclusion criteria of the component other than pregnancy. Responses in variables CVDEXCL1 - CVDEXCL6 identify specific exclusion criteria the participant met.
“2” – Pregnant more than 12 weeks: pregnant women are excluded from the component because physiologic changes with pregnancy affect heart rate, and therefore the interpretation of the data.
“3” – Refusal: participant refused to undergo or continue the test.
“4” – No time: the exam was not done because there was not enough time.
“5” – Technical problem: problems that occurred during the test with equipment, software applications, or technician error.
“6” – Met priority 1 stopping criteria: participant discomfort or distress observed by the health technician or reported by the participant that warranted an emergency stop of the protocol. See Cardiovascular Fitness Procedure Manual, section 3.13.1 for further details.
“7” – Met priority 2 stopping criteria: safety concerns arose during the test that warranted an early stop of the protocol. Responses in variables CVQ220a-CVQ220m identify specific reason(s) called for the priority 2 stop. See Cardiovascular Fitness Procedure Manual, section 3.13.2 for further details.
“8” – Not able to calculate VO2max: heart rate obtained at the end of stage 2 lower than what obtained at the end of stage 1, or the difference between stages 1 and 2 heart rates is 5 beat/minute or less.
“90” – Other.

CVDEXCL1 – CVDEXCL6 (Reasons for exclusion)
The exclusion criteria used for the CV fitness component include more than 50 questions or measurements collected during the household interview and the examinations in the MEC. This set of variables summarizes these exclusion criteria into six categories: physical functioning limitations, cardiovascular conditions/ symptoms, lung/breathing conditions/symptoms, asthma symptoms, medication exclusions, and others. Appendix A documents the classification frames for these categories. These six variables are not exclusive to each other to accommodate participants who met multiple criteria in different categories.

CVXPARC (Physical activity level)
This variable summarizes the responses from a series of questions and describes the participant’s typical physical activity level using the NASA/JSC physical activity scale (Ross, 1990). See Cardiovascular Fitness Procedure Manual, Appendix E for further details.

CVDVOMAX (Predicted VO2max)
This derived variable designates predicted VO2max value calculated with the equation developed by Jackson et al (Jackson, 1990). The prediction model is based on participant’s gender, age, body mass index, and self-reported level of physical activity. Predicted VO2max value is used in the determination of the exercise protocol for the treadmill test. See Cardiovascular Fitness Procedure Manual, Appendix F for further details.

CVAPROT and CVDPROT (Assigned exercise protocol and the actual protocol used in stages 1 and 2)
Each participant was assigned to one of 8 protocols based on the predicted VO2max. According to the procedure, if the heart rate in warm-up is greater than 60% of the predicted maximal heart rate (PMHR), the assigned exercise protocol is decreased by 1 for the remainder of the treadmill test. When the heart rate in warm-up is less than 50% of the PMHR, the assigned protocol is increased by 1 for the remainder of the test. The variable CVAPROT denotes the exercise protocol that was originally assigned to the case while variable CVDPROT reflects the actual exercise protocol used in stage 1 and stage 2 after the adjustment during warm-up. See CV Fitness Procedures Manual, Sections 3.12 and 4.5 for further details.

CVDESVO2 (Estimated maximal oxygen uptake)
This derived variable designates the main outcome of the component: VO2max (ml/kg/min). It is estimated by extrapolation using measured heart rate responses to known levels of exercise workloads, assuming the relation between heart rate and oxygen consumption is linear during exercise (American College of Sports Medicine, 1995). See the CV Fitness Procedures Manual, Appendix G for further details.

CVDFITLV (Cardiovascular fitness level)
The level of cardiovascular fitness is categorized based on gender-age specific cut-points of estimated VO2max. The reference cut-points used for adults 20-49 years are based on data from the Aerobics Center Longitudinal Study (ACLS) (American College of Sports Medicine, 1995, Blair, 1989). Low level of CV fitness is defined as an estimated VO2max below the 20th percentile of the ACLS data of the same gender and age group; moderate fitness is defined as a value between the 20th and 59th percentile, and high fitness level is defined as at or above the 60th percentile. The reference standards used for adolescents and young adults 12-19 years are based on the criteria used in the FITNESSGRAM program (Cureton, 1990, Cureton, 1999). See CV Fitness Procedures Manual, Appendix I for further details.

Analytic Notes

The present dataset contains the NHANES CV fitness data collected during 2001-2002. It is strongly recommended that data users merge this file with the CV fitness data collected in NHANES 1999-2000 to ensure an adequate sample size for analysis. The 1999-2000 NHANES CV fitness data (CVX) are publicly available at https://wwwn.cdc.gov/nchs/nhanes/continuousnhanes/default.aspx?BeginYear=1999.

To ensure the safety and validity of the test, a series of exclusion criteria were developed for the NHANES CV fitness component to preclude participants with conditions that might endanger them during the testing or affect the estimation of the VO2max from the exam. As a result, approximately 70% of the eligible NHANES participants were tested in this component during 1999-2002. The exclusion rate increases with age. In the present dataset, women have a much higher exclusion rate than men. It is largely due to the pregnancy exclusion which accounts for about 25% of the exclusions among women, and the fact that pregnant women are one of the subpopulations oversampled in the current NHANES. Data users need to be aware of the exclusion rate and be cautious when making inferences for the analyses.

The four-year full sample weight (WTMEC4YR) should be used for the combined analyses of NHANES 1999-2000 and NHANES 2001-2002 data. For further details on analyzing the NHANES data, please refer to the analytic guidelines provided with the 2001-2002 NHANES data release files, available at https://wwwn.cdc.gov/nchs/nhanes/default.aspx.

Approximately 12% of the participants in 1999-2002 underwent the treadmill test but did not have their VO2max estimated. Most of these cases resulted from a prematurely terminated test due to meeting the priority 2 stopping criteria. Analysts need to take the incomplete tests into account when interpreting the data.

It is not feasible to utilize a maximal treadmill test to directly measure the cardiovascular fitness level in a population-based study setting such as NHANES. However, due to the nature of the submaximal test, some estimates obtained in this component may appear extreme compared to data obtained from more direct measures. Analysts need to carefully examine the data distribution and consider whether or not it is appropriate to include or exclude extreme values in a given analysis.

During the course of data collection, several protocol modifications were implemented to help improve the completion rate. These modifications do not affect the comparability of the data and are described below:

  1. To allow all participants’ heart rates to rise to as high as 80%, instead of 75%, of the PMHR during the first stage of exercise.
  2. To allow heart rates of participants aged 12-19 years to rise as high as 90%, instead of 85%, of the PMHR during the second stage of the exercise test.
  3. To obtain measured height and weight, instead of self-reported data, for use in setting up the exercise protocol.

References

Codebook and Frequencies

SEQN - Respondent sequence number

Variable Name:
SEQN
SAS Label:
Respondent sequence number
English Text:
Respondent sequence number
Target:
Both males and females 12 YEARS - 49 YEARS

CVDEXSTS - CV fitness exam status

Variable Name:
CVDEXSTS
SAS Label:
CV fitness exam status
English Text:
CV fitness exam status
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 VO2max estimated 2954 2954
2 Tested but VO2max estimate missing 510 3464
3 Not done 1688 5152
. Missing 0 5152

CVDEXCMT - Comment code for CV fitness exam status

Variable Name:
CVDEXCMT
SAS Label:
Comment code for CV fitness exam status
English Text:
Comment code for CV fitness exam status
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 None 2157 2157
1 Met exclusion criteria 954 3111
2 Pregnant more than 12 weeks 248 3359
3 Refusal 59 3418
4 No time 410 3828
5 Technical problem 746 4574
6 Met priority 1 stopping criteria 44 4618
7 Met priority 2 stopping criteria 453 5071
8 Not able to calculate VO2max 14 5085
90 Other 67 5152
. Missing 0 5152

CVDEXCL1 - Excluded per physical limitations

Variable Name:
CVDEXCL1
SAS Label:
Excluded per physical limitations
English Text:
Excluded from exam due to selected physical functioning limitations
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 320 320
2 No 634 954
. Missing 4198 5152

CVDEXCL2 - Excluded per cardiovascular conditions

Variable Name:
CVDEXCL2
SAS Label:
Excluded per cardiovascular conditions
English Text:
Excluded from exam due to selected cardiovascular conditions/symptoms
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 380 380
2 No 574 954
. Missing 4198 5152

CVDEXCL3 - Excluded per lung/breathing conditions

Variable Name:
CVDEXCL3
SAS Label:
Excluded per lung/breathing conditions
English Text:
Excluded from exam due to selected lung/breathing conditions/symptoms
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 197 197
2 No 757 954
. Missing 4198 5152

CVDEXCL4 - Excluded per asthma symptoms

Variable Name:
CVDEXCL4
SAS Label:
Excluded per asthma symptoms
English Text:
Excluded from exam due to selected asthma symptoms
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 136 136
2 No 818 954
. Missing 4198 5152

CVDEXCL5 - Excluded per medications

Variable Name:
CVDEXCL5
SAS Label:
Excluded per medications
English Text:
Excluded from exam due to taking selected exclusionary medications
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 77 77
2 No 877 954
. Missing 4198 5152

CVDEXCL6 - Excluded per other specific reasons

Variable Name:
CVDEXCL6
SAS Label:
Excluded per other specific reasons
English Text:
Excluded from exam due to other specific reasons
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 113 113
2 No 841 954
. Missing 4198 5152

CVQ220a - Priority 2 Stop, excessive HR in stage 2

Variable Name:
CVQ220a
SAS Label:
Priority 2 Stop, excessive HR in stage 2
English Text:
Reason for Priority 2 Stop: Heart rate exceeds predetermined limit during first 2 minutes of stage 2
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 197 197
2 No 256 453
. Missing 4699 5152

CVQ220b - Priority 2 Stop, excessive HR in stage 1

Variable Name:
CVQ220b
SAS Label:
Priority 2 Stop, excessive HR in stage 1
English Text:
Reason for Priority 2 Stop: Heart rate exceeds predetermined limit during stage 1
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 70 70
2 No 383 453
. Missing 4699 5152

CVQ220c - Priority 2 Stop, excessive BP

Variable Name:
CVQ220c
SAS Label:
Priority 2 Stop, excessive BP
English Text:
Reason for Priority 2 Stop: Exercise blood pressure exceeds 260 mmHg systolic and/or 115 mmHg diastolic
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 7 7
2 No 446 453
. Missing 4699 5152

CVQ220e - Priority 2 Stop, significant drop in SBP

Variable Name:
CVQ220e
SAS Label:
Priority 2 Stop, significant drop in SBP
English Text:
Reason for Priority 2 Stop: Significant drop (> 20 mm Hg) in systolic blood pressure during exercise
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 37 37
2 No 416 453
. Missing 4699 5152

CVQ220g - Priority 2 Stop, variability in HR

Variable Name:
CVQ220g
SAS Label:
Priority 2 Stop, variability in HR
English Text:
Reason for Priority 2 Stop: Sudden, noticeable variability in heart rate (sudden change of more than 30 beats/minute during a stage)
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 14 14
2 No 439 453
. Missing 4699 5152

CVQ220h - Priority 2 Stop, participant request

Variable Name:
CVQ220h
SAS Label:
Priority 2 Stop, participant request
English Text:
Reason for Priority 2 Stop: Participant requests to stop test or reports severe fatigue
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 56 56
2 No 397 453
. Missing 4699 5152

CVQ220i - Priority 2 Stop, equipment failure

Variable Name:
CVQ220i
SAS Label:
Priority 2 Stop, equipment failure
English Text:
Reason for Priority 2 Stop: Equipment failure
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 10 10
2 No 443 453
. Missing 4699 5152

CVQ220j - Priority 2 Stop, participant grips rails

Variable Name:
CVQ220j
SAS Label:
Priority 2 Stop, participant grips rails
English Text:
Reason for Priority 2 Stop: Participant is unable to stop gripping hand rails
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 25 25
2 No 428 453
. Missing 4699 5152

CVQ220k - Priority 2 Stop, participant overexerted

Variable Name:
CVQ220k
SAS Label:
Priority 2 Stop, participant overexerted
English Text:
Reason for Priority 2 Stop: Participant reports a rating of perceived exertion more than 17
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 40 40
2 No 413 453
. Missing 4699 5152

CVQ220l - Priority 2 Stop, technician discretion

Variable Name:
CVQ220l
SAS Label:
Priority 2 Stop, technician discretion
English Text:
Reason for Priority 2 Stop: Technician discretion (technician notices signs of severe exertion)
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 17 17
2 No 436 453
. Missing 4699 5152

CVQ220m - Priority 2 Stop, other specified reasons

Variable Name:
CVQ220m
SAS Label:
Priority 2 Stop, other specified reasons
English Text:
Reason for Priority 2 Stop: Other specified reasons
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 42 42
2 No 411 453
. Missing 4699 5152

CVDEXLEN - Length of CV fitness exam (min)

Variable Name:
CVDEXLEN
SAS Label:
Length of CV fitness exam (min)
English Text:
Length of the CV fitness exam (minutes)
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 36.73 Range of Values 5152 5152
. Missing 0 5152

CVDEXMER - Examiner ID code

Variable Name:
CVDEXMER
SAS Label:
Examiner ID code
English Text:
Examiner ID code
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
14 to 90 Range of Values 5152 5152
. Missing 0 5152

CVDPMHR - Predicted maximal heart rate (per min)

Variable Name:
CVDPMHR
SAS Label:
Predicted maximal heart rate (per min)
English Text:
Predicted maximal heart rate (per minute)
English Instructions:
Predicted maximal heart rate = 220 - (Age at interview)
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
171 to 208 Range of Values 5152 5152
. Missing 0 5152

CVXPARC - Physical activity readiness code

Variable Name:
CVXPARC
SAS Label:
Physical activity readiness code
English Text:
Physical activity readiness (PAR) code
English Instructions:
The PAR code was determined by a series of questions to describe the participant's typical physical activity level. (See CV Fitness Procedures Manual, Appendix E)
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 7
Code or Value Value Description Count Cumulative Skip to Item
0 Little or no regular recreation, sport or physical activity and avoids walking or exertion 283 283
1 Little or no regular recreation, sport or physical activity but walks for pleasure and occasionally exercises 570 853
2 Participating regularly in recreation or work requiring modest physical activity for 10 to 60 minutes per week 644 1497
3 Participating regulalry in recreation or work requiring modest physical activity for more than 60 minutes per week 1157 2654
4 Participating regularly in heavy physical activity for less than 30 minutes per week 22 2676
5 Participating regularly in heavy physical activity for 30 - 60 minutes per week 108 2784
6 Participating regularly in heavy physical activity for 1 - 3 hours per week 206 2990
7 Participating regularly in heavy physical activity for more than 3 hours per week 463 3453
. Missing 1699 5152

CVDVOMAX - Predicted VO2max (ml/kg/min)

Variable Name:
CVDVOMAX
SAS Label:
Predicted VO2max (ml/kg/min)
English Text:
Predicted maximal oxygen uptake (ml/kg/min)
English Instructions:
Predicted VO2max = 56.363 + [1.921 x (PAR Code)] - [0.381 x (Age at interview)] - [0.754 x (BMI)] + [10.987 x (F=0, M=1)] . This is used in the determination of the exercise protocol used in the treadmill test. (See CV Fitness Procedures Manual, Appendix F)
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 100
Code or Value Value Description Count Cumulative Skip to Item
2.3 to 65.07 Range of Values 3453 3453
. Missing 1699 5152

CVAPROT - Assigned exercise protocol

Variable Name:
CVAPROT
SAS Label:
Assigned exercise protocol
English Text:
Assigned exercise protocol
English Instructions:
See CV Fitness Procedures Manual, Section 3.7 and Appendix H
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 9
Code or Value Value Description Count Cumulative Skip to Item
1 to 8 Range of Values 3453 3453
. Missing 1699 5152

CVDPROT - Exercise protocol used in stage 1 and 2

Variable Name:
CVDPROT
SAS Label:
Exercise protocol used in stage 1 and 2
English Text:
Exercise protocol used in stage 1 and stage 2 after adjustment for warm-up heart rate
English Instructions:
If the heart rate in Warm-up is greater than 60 % of the predicted maximal heart rate (PMHR), the assigned exercise protocol is decreased by 1 for the remainder of the treadmill test. If the heart rate in Warm-up is less than 50 % of the PMHR, the assigned exercise protocol is increased by 1 for the remainder of the treadmill test. This variable reflects the actual exercise protocol used in stage 1 and stage 2 after the adjustment for heart rate during warm-up. (See CV Fitness Procedures Manual, Sections 3.12 and 4.5)
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 to 8 Range of Values 3453 3453
. Missing 1699 5152

CVATEMP - Room temperature (degrees F)

Variable Name:
CVATEMP
SAS Label:
Room temperature (degrees F)
English Text:
Room temperature (Degrees Fahrenheit)
English Instructions:
Measured by a digital thermometer directly integrated with the computer system. If temperature is not captured automatically, the temperature can be read off the monitor and entered manually.
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 140
Code or Value Value Description Count Cumulative Skip to Item
62.3 to 85.8 Range of Values 3447 3447
. Missing 1705 5152

CVAARM - Arm selected for blood pressure monitor

Variable Name:
CVAARM
SAS Label:
Arm selected for blood pressure monitor
English Text:
Arm selected for blood pressure monitoring
English Instructions:
Right arm is used for all measurements unless that arm cannot be used, then the left arm is used.
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Right 3425 3425
2 Left 25 3450
3 Could not obtain 0 3450
. Missing 1702 5152

CVACUFF - Cuff size for blood pressure monitor

Variable Name:
CVACUFF
SAS Label:
Cuff size for blood pressure monitor
English Text:
Cuff size used for blood pressure monitoring
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Child 111 111
2 Adult 1654 1765
3 Large arm 1685 3450
. Missing 1702 5152

CVAVEST - Mesh vest used

Variable Name:
CVAVEST
SAS Label:
Mesh vest used
English Text:
Mesh vest used
English Instructions:
Mesh vest is used with some male participants to help maintain adherence of electrodes to the chest when chest hair is present.
Target:
Males only 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 58 58
2 No 1741 1799
7 Refused 0 1799
. Missing 3353 5152

CVAWS1 - Warm-up speed (mph)

Variable Name:
CVAWS1
SAS Label:
Warm-up speed (mph)
English Text:
Warm-up speed (miles per hour)
English Instructions:
See CV Fitness Procedures Manual, Appendix J for speed and grade table by protocol and stage
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 3.7
Code or Value Value Description Count Cumulative Skip to Item
1.7 to 3.6 Range of Values 3437 3437
. Missing 1715 5152

CVAWG1 - Warm-up grade (% incline)

Variable Name:
CVAWG1
SAS Label:
Warm-up grade (% incline)
English Text:
Warm-up grade (% incline)
English Instructions:
See CV Fitness Procedures Manual, Appendix J for speed and grade table by protocol and stage
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 14.5
Code or Value Value Description Count Cumulative Skip to Item
0 to 5 Range of Values 3437 3437
. Missing 1715 5152

CVDWTIM - Amount of time spent in warm-up (min)

Variable Name:
CVDWTIM
SAS Label:
Amount of time spent in warm-up (min)
English Text:
Amount of time spent in warm-up (minutes)
English Instructions:
If warm-up is completed, the time is always 2 minutes.
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.2167 to 2 Range of Values 3437 3437
. Missing 1715 5152

CVXWRPE - Warm-up rating of perceived exertion

Variable Name:
CVXWRPE
SAS Label:
Warm-up rating of perceived exertion
English Text:
Warm-up rating of perceived exertion (RPE)
English Instructions:
RPE is a scale of perceived exertion with a range of 6-20 with 6 being equivalent to a low level of effort and 20 being maximal exertion. The exam is stopped if the participant rates his/her effort greater than 17. (See CV Fitness Procedures Manual, Chapters 3.9.7 and 3.10.1)
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
6 to 20
Code or Value Value Description Count Cumulative Skip to Item
6 to 19 Range of Values 3393 3393
. Missing 1759 5152

CVDWHR - Warm-up heart rate (per min)

Variable Name:
CVDWHR
SAS Label:
Warm-up heart rate (per min)
English Text:
Warm-up heart rate (per minute)
English Instructions:
Heart rate is taken by the automated blood pressure/heart rate monitor and captured directly into the computer system. (See CV Fitness Procedures Manual, Sections 3.9.6 and 4.4.4)
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
72 to 174 Range of Values 2997 2997
. Missing 2155 5152

CVDWSY - Warm-up systolic BP (mm Hg)

Variable Name:
CVDWSY
SAS Label:
Warm-up systolic BP (mm Hg)
English Text:
Warm-up systolic blood pressure (mm Hg)
English Instructions:
Blood pressure is taken by the automated blood pressure/heart rate monitor and captured directly into the computer system.
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 300
Code or Value Value Description Count Cumulative Skip to Item
63 to 220 Range of Values 2978 2978
. Missing 2174 5152

CVDWDI - Warm-up diastolic BP (mm Hg)

Variable Name:
CVDWDI
SAS Label:
Warm-up diastolic BP (mm Hg)
English Text:
Warm-up diastolic blood pressure (mm Hg)
English Instructions:
Blood pressure is taken by the automated blood pressure/heart rate monitor and captured directly into the computer system.
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 300
Code or Value Value Description Count Cumulative Skip to Item
38 to 146 Range of Values 2978 2978
. Missing 2174 5152

CVDS1S - Stage 1 speed (mph)

Variable Name:
CVDS1S
SAS Label:
Stage 1 speed (mph)
English Text:
Stage 1 speed (miles per hour)
English Instructions:
See CV Fitness Procedures Manual, Appendix J for speed and grade table by protocol and stage
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 3.7
Code or Value Value Description Count Cumulative Skip to Item
2.1 to 3.7 Range of Values 3398 3398
. Missing 1754 5152

CVDS1G - Stage 1 grade (% incline)

Variable Name:
CVDS1G
SAS Label:
Stage 1 grade (% incline)
English Text:
Stage 1 grade (% incline)
English Instructions:
See CV Fitness Procedures Manual, Appendix J for speed and grade table by protocol and stage
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 14.5
Code or Value Value Description Count Cumulative Skip to Item
0.5 to 8.5 Range of Values 3398 3398
. Missing 1754 5152

CVDS1TIM - Amount of time spent in Stage 1 (min)

Variable Name:
CVDS1TIM
SAS Label:
Amount of time spent in Stage 1 (min)
English Text:
Amount of time spent in Stage 1 (minutes)
English Instructions:
If Stage 1 is completed, the time is always 3 minutes.
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.0667 to 3 Range of Values 3398 3398
. Missing 1754 5152

CVXS1RPE - Stage 1 rating of perceived exertion

Variable Name:
CVXS1RPE
SAS Label:
Stage 1 rating of perceived exertion
English Text:
Stage 1 rating of perceived exertion (RPE)
English Instructions:
RPE is a scale of perceived exertion with a range of 6-20 with 6 being equivalent to a low level of effort and 20 being maximal exertion. The exam is stopped if the participant rates his/her effort greater than 17. (See CV Fitness Procedures Manual, Chapters 3.9.7 and 3.10.1)
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
6 to 20
Code or Value Value Description Count Cumulative Skip to Item
6 to 20 Range of Values 3250 3250
. Missing 1902 5152

CVDS1HR - Stage 1 heart rate (per min)

Variable Name:
CVDS1HR
SAS Label:
Stage 1 heart rate (per min)
English Text:
Stage 1 heart rate (per minute)
English Instructions:
Heart rate is taken by the automated blood pressure/heart rate monitor and captured directly into the computer system. In the event the heart rate is not captured automatically at the end of stage 1, the technician would manually enter the readings from the heart rate monitor. (See CV Fitness Procedures Manual, Sections 3.9.8 and 4.4.6)
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
79 to 171 Range of Values 3242 3242
. Missing 1910 5152

CVDS1SY - Stage 1 systolic BP (mm Hg)

Variable Name:
CVDS1SY
SAS Label:
Stage 1 systolic BP (mm Hg)
English Text:
Stage 1 systolic blood pressure (mm Hg)
English Instructions:
Blood pressure is taken by the automated blood pressure/heart rate monitor and captured directly into the computer system.
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 300
Code or Value Value Description Count Cumulative Skip to Item
74 to 234 Range of Values 2826 2826
. Missing 2326 5152

CVDS1DI - Stage 1 diastolic BP (mm Hg)

Variable Name:
CVDS1DI
SAS Label:
Stage 1 diastolic BP (mm Hg)
English Text:
Stage 1 diastolic blood pressure (mm Hg)
English Instructions:
Blood pressure is taken by the automated blood pressure/heart rate monitor and captured directly into the computer system.
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 300
Code or Value Value Description Count Cumulative Skip to Item
37 to 111 Range of Values 2826 2826
. Missing 2326 5152

CVDS2S - Stage 2 speed (mph)

Variable Name:
CVDS2S
SAS Label:
Stage 2 speed (mph)
English Text:
Stage 2 speed (miles per hour)
English Instructions:
See CV Fitness Procedures Manual, Appendix J for speed and grade table by protocol and stage
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 3.7
Code or Value Value Description Count Cumulative Skip to Item
2.1 to 3.7 Range of Values 3208 3208
. Missing 1944 5152

CVDS2G - Stage 2 grade (% incline)

Variable Name:
CVDS2G
SAS Label:
Stage 2 grade (% incline)
English Text:
Stage 2 grade (% incline)
English Instructions:
See CV Fitness Procedures Manual, Appendix J for speed and grade table by protocol and stage
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 14.5
Code or Value Value Description Count Cumulative Skip to Item
4.5 to 14.5 Range of Values 3208 3208
. Missing 1944 5152

CVDS2TIM - Amount of time spent in Stage 2 (min)

Variable Name:
CVDS2TIM
SAS Label:
Amount of time spent in Stage 2 (min)
English Text:
Amount of time spent in Stage 2 (minutes)
English Instructions:
If Stage 2 is completed, the time is always 3 minutes.
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.0167 to 3 Range of Values 3206 3206
. Missing 1946 5152

CVXS2RPE - Stage 2 rating of perceived exertion

Variable Name:
CVXS2RPE
SAS Label:
Stage 2 rating of perceived exertion
English Text:
Stage 2 rating of perceived exertion (RPE)
English Instructions:
RPE is a scale of perceived exertion with a range of 6-20 with 6 being equivalent to a low level of effort and 20 being maximal exertion. The exam is stopped if the participant rates his/her effort greater than 17 and confirms unable to continue the test. (See CV Fitness Procedures Manual, Chapters 3.9.7 and 3.10.1)
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
6 to 20
Code or Value Value Description Count Cumulative Skip to Item
6 to 20 Range of Values 2979 2979
. Missing 2173 5152

CVDS2HR - Stage 2 heart rate (per min)

Variable Name:
CVDS2HR
SAS Label:
Stage 2 heart rate (per min)
English Text:
Stage 2 heart rate (per minute)
English Instructions:
Heart rate is taken by the automated blood pressure/heart rate monitor and captured directly into the computer system. In the event the heart rate is not captured automatically at the end of stage 2, the technician would manually enter the readings from the heart rate monitor. (See CV Fitness Procedures Manual, Sections 3.9.9 and 4.4.7)
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
86 to 197 Range of Values 2983 2983
. Missing 2169 5152

CVDS2SY - Stage 2 systolic BP (mm Hg)

Variable Name:
CVDS2SY
SAS Label:
Stage 2 systolic BP (mm Hg)
English Text:
Stage 2 systolic blood pressure (mm Hg)
English Instructions:
Blood pressure is taken by the automated blood pressure/heart rate monitor and captured directly into the computer system.
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 300
Code or Value Value Description Count Cumulative Skip to Item
62 to 266 Range of Values 2626 2626
. Missing 2526 5152

CVDS2DI - Stage 2 diastolic BP (mm Hg)

Variable Name:
CVDS2DI
SAS Label:
Stage 2 diastolic BP (mm Hg)
English Text:
Stage 2 diastolic blood pressure (mm Hg)
English Instructions:
Blood pressure is taken by the automated blood pressure/heart rate monitor and captured directly into the computer system.
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 300
Code or Value Value Description Count Cumulative Skip to Item
38 to 139 Range of Values 2626 2626
. Missing 2526 5152

CVDR1TIM - Amount of time spent in Recovery 1 (min)

Variable Name:
CVDR1TIM
SAS Label:
Amount of time spent in Recovery 1 (min)
English Text:
Amount of time spent in Recovery 1 (minutes)
English Instructions:
If Recovery 1 is completed, the time is always 1 minute.
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.3 to 1 Range of Values 3394 3394
. Missing 1758 5152

CVDR1HR - Recovery 1 heart rate (per min)

Variable Name:
CVDR1HR
SAS Label:
Recovery 1 heart rate (per min)
English Text:
Recovery 1 heart rate (per minute)
English Instructions:
Heart rate is taken by the automated blood pressure/heart rate monitor and captured directly into the computer system.
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
43 to 230 Range of Values 3059 3059
. Missing 2093 5152

CVDR1SY - Recovery 1 systolic BP (mm Hg)

Variable Name:
CVDR1SY
SAS Label:
Recovery 1 systolic BP (mm Hg)
English Text:
Recovery 1 systolic blood pressure (mm Hg)
English Instructions:
Blood pressure is taken by the automated blood pressure/heart rate monitor and captured directly into the computer system.
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 300
Code or Value Value Description Count Cumulative Skip to Item
75 to 254 Range of Values 3048 3048
. Missing 2104 5152

CVDR1DI - Recovery 1 diastolic BP (mm Hg)

Variable Name:
CVDR1DI
SAS Label:
Recovery 1 diastolic BP (mm Hg)
English Text:
Recovery 1 diastolic blood pressure (mm Hg)
English Instructions:
Blood pressure is taken by the automated blood pressure/heart rate monitor and captured directly into the computer system.
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 300
Code or Value Value Description Count Cumulative Skip to Item
39 to 136 Range of Values 3048 3048
. Missing 2104 5152

CVDR2TIM - Amount of time spent in Recovery 2 (min)

Variable Name:
CVDR2TIM
SAS Label:
Amount of time spent in Recovery 2 (min)
English Text:
Amount of time spent in Recovery 2 (minutes)
English Instructions:
If Recovery 2 is completed, the time is always 1 minute.
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.0333 to 1 Range of Values 3379 3379
. Missing 1773 5152

CVDR2HR - Recovery 2 heart rate (per min)

Variable Name:
CVDR2HR
SAS Label:
Recovery 2 heart rate (per min)
English Text:
Recovery 2 heart rate (per minute)
English Instructions:
Heart rate is taken by the automated blood pressure/heart rate monitor and captured directly into the computer system.
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
47 to 201 Range of Values 3153 3153
. Missing 1999 5152

CVDR2SY - Recovery 2 systolic BP (mm Hg)

Variable Name:
CVDR2SY
SAS Label:
Recovery 2 systolic BP (mm Hg)
English Text:
Recovery 2 systolic blood pressure (mm Hg)
English Instructions:
Blood pressure is taken by the automated blood pressure/heart rate monitor and captured directly into the computer system.
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 300
Code or Value Value Description Count Cumulative Skip to Item
75 to 254 Range of Values 3147 3147
. Missing 2005 5152

CVDR2DI - Recovery 2 diastolic BP (mm Hg)

Variable Name:
CVDR2DI
SAS Label:
Recovery 2 diastolic BP (mm Hg)
English Text:
Recovery 2 diastolic blood pressure (mm Hg)
English Instructions:
Blood pressure is taken by the automated blood pressure/heart rate monitor and captured directly into the computer system.
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 300
Code or Value Value Description Count Cumulative Skip to Item
38 to 171 Range of Values 3147 3147
. Missing 2005 5152

CVDR3TIM - Amount of time spent in Recovery 3 (min)

Variable Name:
CVDR3TIM
SAS Label:
Amount of time spent in Recovery 3 (min)
English Text:
Amount of time spent in Recovery 3 (minutes)
English Instructions:
If Recovery 3 is completed, the time is always 1 minute.
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 1 2313 2313
. Missing 2839 5152

CVDR3HR - Recovery 3 heart rate (per min)

Variable Name:
CVDR3HR
SAS Label:
Recovery 3 heart rate (per min)
English Text:
Recovery 3 heart rate (per minute)
English Instructions:
Heart rate is taken by the automated blood pressure/heart rate monitor and captured directly into the computer system. The treadmill test is usually completed after two minutes of Recovery. A third minute of Recovery will only be taken if the participant's heart rate is greater than 110 after 2 minutes of Recovery.
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
45 to 193 Range of Values 2162 2162
. Missing 2990 5152

CVDR3SY - Recovery 3 systolic BP (mm Hg)

Variable Name:
CVDR3SY
SAS Label:
Recovery 3 systolic BP (mm Hg)
English Text:
Recovery 3 systolic blood pressure (mm Hg)
English Instructions:
Blood pressure is taken by the automated blood pressure/heart rate monitor and captured directly into the computer system.
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 300
Code or Value Value Description Count Cumulative Skip to Item
60 to 237 Range of Values 2156 2156
. Missing 2996 5152

CVDR3DI - Recovery 3 diastolic BP (mm Hg)

Variable Name:
CVDR3DI
SAS Label:
Recovery 3 diastolic BP (mm Hg)
English Text:
Recovery 3 diastolic blood pressure (mm Hg)
English Instructions:
Blood pressure is taken by the automated blood pressure/heart rate monitor and captured directly into the computer system.
Target:
Both males and females 12 YEARS - 49 YEARS
Hard Edits:
0 to 300
Code or Value Value Description Count Cumulative Skip to Item
37 to 155 Range of Values 2156 2156
. Missing 2996 5152

CVDESVO2 - Estimated VO2max (ml/kg/min)

Variable Name:
CVDESVO2
SAS Label:
Estimated VO2max (ml/kg/min)
English Text:
Estimated maximal oxygen uptake (ml/kg/min).
English Instructions:
Maximal oxygen consumption (VO2max) is estimated by measuring the heart rates response to known levels of submaximal work. (See the CV Fitness Procedures Manual, Appendix G for more details on the calculation of the estimated VO2max)
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
18.23 to 112.4 Range of Values 2954 2954
. Missing 2198 5152

CVDFITLV - Cardiovascular fitness level

Variable Name:
CVDFITLV
SAS Label:
Cardiovascular fitness level
English Text:
Cardiovascular fitness level
English Instructions:
The level of cardiovascular fitness is categorized based on gender-age specific cut-points of estimated VO2max. (See CV Fitness Procedures Manual, Appendix I for details.)
Target:
Both males and females 12 YEARS - 49 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Low 784 784
2 Moderate 1182 1966
3 High 988 2954
. Missing 2198 5152

Appendix A. Classification of the Exclusion Criteria in the NAHNES Cardiovascular Fitness Component

CVDEXCL1: Physical functioning limitations
Difficulties in walking for a quarter mile
Difficulties in walking up 10 steps without resting
Difficulties in walking from one room to another on the same level
Difficulties in standing up from an armless straight chair
Having back or neck problems
Having fractures or injuries in bone or joint
Having health problem that requires the use of special equipment, such as a cane or a wheelchair
Having a bone or joint problem that could be made worse by walking
Lose balance due to dizziness on a regular basis
Lose consciousness on a regular basis
Blind or with very poor eyesight
Diabetes affected eyes or had retinopathy
Having developmental problems
Having amputations of legs or feet other than toes
Weight exceeded equipment limitation (>350 lb)
Other specified physical limitations

CVDEXCL2: Cardiovascular conditions/symptoms
Had been diagnosed with congestive heart failure
Had been diagnosed with coronary heart disease
Had been diagnosed with angina
Had been diagnosed with myocardial infarction
Had been diagnosed with stroke
Self-reported heart problems
Self-reported stroke problems
Having a pacemaker or automatic defibrillator
Doctor had instructed to do only physical activity recommended by a doctor because of a heart condition
Feeling chest pain during physical activity
Had chest pain when not doing physical activity
Resting heart rate ≥ 100 beats/min
Resting systolic blood pressure ≥ 180 mmHg
Resting diastolic blood pressure ≥ 100 mmHg
Irregular heart beats: 3 or more dropped beats in 30 seconds

CVDEXCL3: Lung/breathing conditions/symptoms
Having to stop for breath when walking at own pace on level ground
Having to stop for breath after walking about 100 yards or after a few minutes on level ground
Having been awakened by trouble breathing or shortness of breath
Having breathing trouble during sleep relieved by sitting up
Having to sleep on 2 or more pillows to help breathe
Self-reported lung or breathing problems
Had been diagnosed with emphysema

CVDEXCL4: Asthma symptoms
Had 12 or more attacks of wheezing or whistling during the past 12 months
Had wheezing severe enough to limit speech during the past 12 months

CVDEXCL5: Medication exclusions
Anti Arrhythmics
Amiodarone (Cordarone)
Bretylium (Bretylol)
Disopyramide (Norpace)
Encainide (Enkaid)
Ethmozine (Moricizine)
Flecanide (Tambocor)
Lidocaine (Xylocaine, Xylocard)
Metoprolol Succinate (Toprol-XL)
Mexiletine (Mexitil)
Moricizine (Ethmozine)
Posicor (Mibefradil)
Procainamide (Pronestyl, Procan SR)
Propafenone (Rhythmol)
Quinidine (Quinora, Quinalan, Cardioquin, Quinidex, Quinaglute)
Tocainide (Tonocard)

Beta Blockers
Acebutolol (Sectral)
Atenolol (Tenormin)
Betagan
Betaxolol (Kerlone)
Bisoprolol (Zebeta)
Carteolol (Cartrol)
Carvedilol (Coreg)
Esmolol (Brevibloc)
Labetalol (Normodyne)
Levobunolol
Metoprolol Tartrate (Lopressor)
Nadolol (Corgard)
Oxprenolol (Trasicor, Slow Trasicor)
Penbutolol (Levatol)
Pindolol (Visken)
Propranolol (Inderal)
Sotolol (Betapace)
Timolol (Blocadren)
Trandate

Beta Blockers/Diuretic Combinations
Corzide
Inderide
Lopressor Hydrochlorothiazide
Tenorectic
Timolide
Ziac

Calcium Channel-Blockers
Amlodipine (Norvasc)
Bepridil (Vascor)
Diltiazem (Cardizem, Dilacor, Tiazac)
Felodipine (Plendil)
Isradipine (Dyna Circ)
Norvasc (Amlodipine)
Nicardipine (Cardene)
Nifedipine (Procardia, Adalat)
Nimodipine (Nimotop)
Nisoldipine (Sular)
Tiazak (Diltiazem HCl)
Verapamil (Covera, Verelan, Calan, Isoptin)

CNS Stimulant
Ma Huang (ephedrine)

Digitalis
Digoxin (Lanoxin)

Eye Drops/ Beta Blockers
Betagen Eye Drops
Betoptic Eye Drops
Levobunolol Eye Drops
Metipranolol (Optipranolol)
Timoptic Eye Drops

Nitrates and Nitroglycerin
Isosorbide Dinitrate (Isordil, Diltrate)
Isosorbide Mononitrate (Ismo, Monoket)
Nitroglycerin, Translingual (Nitrostat, Nitrolingual Spray)
Nitroglycerin, Transmucosal (Nitrogard)
Nitroglycerin, Topical (Nitrol, Nitro-Bid, Transderm Nitro, Nitro-Dur II, Nitrodisc, Minitran, Deponit, Nitroderm)
Nitroglycerin, Sustained Release (Nitrong, Nitrocine, Nitroglyn)
Pentaerythritol Tetranitrate (Cardilate)

Ephedra Based Weight Loss Medication
Dymetadrine Xtreme
Extreme Ripped Force
Metabolife
Metabolift
Phentermine
Pro-Ripped Ephedra
Ripped Fuel
Stacker
Ultra Ripped

CVDEXCL6: Other specified reasons
Had been hospitalized for specified reasons in the past 3 months (see the CV Fitness Procedures Manual, Appendix D for details)
Doctor recommended not to participate in sports or other activities due to a health condition
Other safety concerns specified by the participant
Other safety concerns identified by MEC physician or staff