Table 4.
Markers of energy deficiency for subjects with lower and higher exercise dependence.
| All (n=53) |
Lower EXDS score (n=23) |
Higher EXDS score (n=30) |
P value | |
| RMR (kcal/kg FFM/day) | 26.0±1.9 | 25.6±2.0 | 26.3±1.7 | 0.181 |
| RMRratio | 0.86±0.07 | 0.85±0.06 | 0.87±0.07 | 0.209 |
| Low RMRratio (no. of subjects) | 38 (72%) | 16 (70%) | 22 (73%) | 0.313 |
| Cortisol (mmol/L) | 508±123 | 455±109 | 549±120 | 0.005 |
| High cortisol (no. of subjects) | 3 (6%) | 0 (0%) | 3 (10%) | 0.249 |
| Cortisol highest quartile of range (no. of subjects) | 20 (38%) | 5 (22%) | 15 (50%) | 0.048 |
| Total testosterone (nmol/L) | 21.5±6.3 | 19.8±6.6 | 22.8±5.8 | 0.086 |
| IGF-1 (nmol/L) | 21.5±6.5 | 20.0±6.3 | 22.7±6.6 | 0.136 |
| T3 (nmol/L) | 1.9±0.3 | 2.0±0.2 | 1.9±0.3 | 0.288 |
| Fasting glucose (mmol/L) | 5.0±0.4 | 5.0±0.4 | 4.9±0.3 | 0.185 |
| Insulin (pmol/L) | 31.6±11.2 | 28.9±11.6 | 33.7±10.5 | 0.126 |
| Testosterone:cortisol ratio | 0.04±0.02 | 0.05±0.02 | 0.04±0.02 | 0.584 |
| Cortisol:insulin ratio | 18.0±7.2 | 18.0±7.4 | 17.9±7.1 | 0.938 |
Normally distributed data are shown as mean and SD, and number (no.) of subjects are shown as number (n) and percentage (%).
EXDS, Exercise Dependence Scale; FFM, fat free mass; IGF-1, insulin-like growth factor 1; RMR, resting metabolic rate; T3, tri-iodothyronine.