Main characteristics of subjects with complete deficiency of α actinin (XX homozygotes) or with the other two genotypes (RX and RR) for the ACTN3 gene
| XX (n = 5) | RX/RR (n = 18) | |
|---|---|---|
| Values are mean (SEM). There are no significant differences between the means (p>0.05). | ||
| V˙o2peak, Peak oxygen uptake; PPO, peak power output; VT, ventilatory threshold; 1RM, one repetition maximum. | ||
| Age (years) | 67 (5) | 67 (6) |
| Height (cm) | 158 (7) | 156 (7) |
| Weight (kg) | 68 (7) | 63 (10) |
| % body fat | 18.7 (2.0) | 18.9 (2.8) |
| Estimated daily physical activity (kcal/day) | 560 (36) | 542 (48) |
| Packed cell volume (%) | 43.3 (1.4) | 41.8 (0.8) |
| Haemoglobin (g/dl) | 14.5 (0.7) | 13.9 (0.3) |
| V˙o2peak (ml/kg/min) | 18.4 (2.0) | 20.7 (1.3) |
| PPO (W/kg) | 1.5 (0.2) | 1.7 (0.1) |
| V˙o2 (ml/kg/min) at VT | 11.5 (1.1) | 12.0 (0.8) |
| One mile walk test (s) | 980 (43) | 932 (18) |
| Sit-stand test (s) | 9.1 (0.3) | 9.5 (0.3) |
| 1RM bench press (kg) | 23.9 (2.8) | 22.7 (1.4) |