Plantar flexor peak twitch torque, contraction time, half-relaxation time, maximum rate of torque development and maximum rate of torque relaxation prior to (pre) and following (post, 24 and 48 h) 20 min of effective match-play tennis in cool and hot conditions
| Contractile | Condition | Assessment time point | |||
|---|---|---|---|---|---|
| Characteristic | Pre | Post | 24 h | 48 h | |
| Peak twitch torque (N m) | Cool | 16.0±3.2 | 14.1±3.1* | 15.8±3.8 | 15.5±3.6 |
| Hot | 15.3±4.3 | 13.8±4.2* | 14.7±3.0 | 15.6±2.9 | |
| Contraction time (ms) | Cool | 80.7±6.7 | 77.9±9.8 | 80.8±6.2 | 77.0±4.3 |
| Hot | 80.3±9.3 | 83.3±8.0 | 83.3±8.8 | 80.5±8.1 | |
| Half-relaxation time (ms) | Cool | 65.8±5.9 | 67.4±7.8 | 67.9±9.7 | 64.1±13.1 |
| Hot | 66.3±7.5 | 63.8±9.0 | 68.9±11.8 | 65.7±8.4 | |
| Maximum rate of torque development (N m/s) | Cool | 540±158 | 471±107* | 530±141 | 538±143 |
| Hot | 536±178 | 473±172* | 495±120 | 513±107 | |
| Maximum rate of torque relaxation (N m/s) | Cool | −207±48 | −173±33* | −192±51 | −196±51 |
| Hot | −193±59 | −162±51* | −180±48 | −189±33 | |
*Significantly different from pre, p<0.05.