Table 4.
Descriptive Characteristics of the Cohort
| Characteristic | Test 1 | Test 2 |
|---|---|---|
| Age, y | 43.1±10.4 | 46.3±11.0* |
| Height, m | 1.74±0.09 | 1.74±0.09 |
| Weight, kg | 80.2±17.4 | 79.8±16.9 |
| BMI, kg·m−2 | 26.3±4.8 | 26.2±4.8 |
| Waist circumference, cm | 89.0±14.0 | 88.9±13.6 |
| Body fat, % | 28.8±8.3 | 27.7±8.1* |
| Obesity, % | 24 | 23 |
| Hypertension, % | 22 | 21 |
| Dyslipidemia, % | 46 | 42* |
| Diabetes mellitus, % | 3 | 3 |
| Smoker, % | 12 | 9* |
| Inactive, % | 66 | 36* |
| Ethnicity, % | ||
| Asian or Pacific Islander | 0.2 | 0.2 |
| Black, not of Hispanic origin | 0.2 | 0.2 |
| Hispanic | 0 | 0 |
| White, not of Hispanic origin | 99.6 | 99.6 |
| Resting heart rate, beat·min−1 | 67.5±11.0 | 64.4±10.4* |
| VO2max, mL·kg−1·min−1 | 34.9±9.3 | 36.8±9.7* |
| FRIEND CRF percentile | 49±26 | 60±25* |
| Maximum heart rate, beat·min−1 | 179.8±13.5 | 175.7±13.5* |
| Maximum RER | 1.2±0.1 | 1.2±0.1 |
| Peak RPE | 18.3±1.7 | 18.4±1.8* |
Data are given as mean±SD. BMI indicates body mass index; FRIEND CRF percentile, VO2max percentile ranking from the Fitness Registry and the Importance of Exercise National Database46; RER, respiratory exchange ratio; RPE, rating of perceived exertion (6–20 Borg scale); and VO2max, maximal oxygen consumption.
Significantly different from test 1 (P<0.05).