Table 1.
Subject characteristics.
| Low-Fit (N = 15) | High-Fit (N = 15) | p-Value | |
|---|---|---|---|
| Age (years) | 24.5 [22.9–25.6] | 21.8 [21.6–23.7] | 0.18 |
| Ethnicity | Caucasian (10), Asian (1), Indo-pacific (4) | All Caucasian | |
| Weight (kg) | 59.7 ± 7.1 | 61.2 ± 7.0 | 0.95 |
| Height (m) | 1.63 ± 0.08 | 1.68 ± 0.05 | 0.052 |
| BMI (kg/m2) | 22.4 ± 1.4 | 21.7 ± 1.9 | 0.28 |
| Fat mass (% of weight) | 28.7 ± 3.9 | 25.1 ± 4.4 | 0.025 * |
| Hemoglobin (mmol/L) | 8.4 ± 0.6 | 8.5 ± 0.6 | 0.62 |
| Use of birth control pill | 6/15 | 7/15 | |
| V̇O2peak (mL·kg −1·min −1) | 35.0 [31.6–35.6] | 50.4 [49.0–54.0] | <0.0001 **** |
| Baecke total score | 7.3 ± 1.0 | 9.5 ± 0.8 | <0.0001 **** |
| mV̇O2 recovery constant (% min −1) | 1.53 ± 0.46 # | 2.06 ± 0.57 | 0.018 * |
BMI = body mass index, V̇O2peak = maximal oxygen consumption values, mV̇O2 = maximal oxygenation recovery constant in the gastrocnemius as a proxy for skeletal muscle mitochondrial capacity. # N = 11. Values are mean ± SD for normally distributed data, and median [IQR] for not normally distributed data. Significance was tested using unpaired two-tailed t-tests for all normally distributed data and using the Mann Whitney test for the not normally distributed VO2 peak data. * p < 0.05, **** p < 0.0001.