Table 1.
Twitch and surface action potential parameters before and after 7-day ‘dry’ water immersion
| Twitch | SAP, first phase | |||||||
|---|---|---|---|---|---|---|---|---|
| Pt (N) | TPT (ms) | ½RT (ms) | dPt/dt (%Pt ms−1) | Pt:Po | Amplitude (mV) | Duration (ms) | Area (mV ms) | |
| Control | 125.6 ± 13.7 | 118.2 ± 3.6 | 93.7 ± 3.3 | 2.06 ± 0.29 | 0.23 ± 0.02 | 4.6 ± 0.6 | 10.4 ± 1.0 | 21.6 ± 3.6 |
| Immersion | 139.3 ± 18.6 | 118.8 ± 3.4 | 88.7 ± 3.8 * | 1.77 ± 0.19 * | 0.21 ± 0.02 | 3.5 ± 0.5 * | 12.8 ± 0.7 ** | 10.2 ± 2.0 ** |
Values are means ± s.e.m. Pt, twitch contraction; TPT, time to peak twitch; ½RT, time to half-relaxation; dPt/dt, rate of force development; SAP, surface action potential
*
P < 0.05
**
P < 0.01, control compared with after immersion.