Table 1.
Physiological characteristics and mean scores on the Exercise Dependence Scale (EXDS) for subjects with lower and higher exercise dependence
| All (n=53) |
Lower EXDS score (n=23) |
Higher EXDS score (n=30) | P value | |
| Age (years) | 35.3±8.3 | 35.4±9.3 | 35.2±7.7 | 0.946 |
| Height (cm) | 180.9±5.4 | 180.1±5.5 | 181.5±5.2 | 0.339 |
| Body weight (kg) | 75.2±6.9 | 73.3±7.7 | 76.7±6.0 | 0.075 |
| Body mass index (kg/m2) | 22.9±1.9 | 22.5±2.2 | 23.2±1.5 | 0.198 |
| Body fat (kg) | 9.4±4.7 | 9.4±5.0 | 9.4±4.5 | 0.959 |
| Body fat (%) | 13.8±5.0 | 14.1±5.3 | 13.5±4.8 | 0.663 |
| Fat free mass (kg) | 64.6±5.2 | 63.2±5.8 | 65.7±4.4 | 0.077 |
| Exercise (hours/week) | 9.5±3.4 | 8.1±2.7 | 10.6±3.5 | 0.006 |
| Active in sport (years) | 3.5 (2.0–7.0) | 3.0 (2.0–6.0) | 4.0 (2.0–8.0) | 0.816 |
| VO2peak (mL/kg/min) | 65.3±5.9 | 64.7±5.9 | 65.8±5.9 | 0.521 |
| Sleeping heart rate (beats per min) | 44.9±8.1 | 44.8±7.9 | 45.0±8.4 | 0.940 |
| EXDS total score | 54.7±10.4 | 45.9±8.1 | 61.5±5.7 | 0.000 |
| EXDS subscale scores | ||||
| Withdrawal | 7.2±2.4 | 5.7±1.9 | 8.4±2.2 | 0.000 |
| Continuance | 6.6±3.0 | 5.8±2.3 | 7.3±3.3 | 0.070 |
| Tolerence | 8.9±2.9 | 7.8±3.0 | 9.7±2.6 | 0.018 |
| Lack of control | 6.9±3.0 | 4.9±1.7 | 8.4±3.0 | 0.000 |
| Reduction in other activities | 6.5±2.1 | 5.2±1.3 | 7.6±2.1 | 0.000 |
| Time | 11.3±3.1 | 10.0±3.3 | 12.3±2.5 | 0.006 |
| Intention | 7.2±2.0 | 6.4±1.9 | 7.9±1.9 | 0.007 |
Normally distributed data are shown as mean and SD, and non-normally distributed data as median and IQR (IQ 25 and IQ 75 percentiles).