Effect of aestivation on skeletal muscle work loop power output,isometric kinetics and maximal isometric stress
| . | Iliofibularis . | . | . | Sartorius . | . | . | ||
|---|---|---|---|---|---|---|---|---|
| . | Control . | Aaestivator . | P . | Control . | Aaestivator . | P . | ||
| Time (ms) | ||||||||
| To peak twitch | 33.9±1.8 | 45.0±1.6 | 0.003 | 33.6±1.3 | 38.2±2.1 | 0.09 | ||
| From peak twitch to half relaxation | 21.9±1.9 | 33.0±0.7 | 0.001 | 24.2±2.6 | 35.3±4.6 | 0.07 | ||
| To half peak tetanus | 38.5±2.5 | 39.4±1.7 | 0.81 | 25.9±1.3 | 25.2±0.3 | 0.60 | ||
| From last stimulus to half tetanus relaxation | 71.1±5.8 | 89.3±1.4 | 0.02 | 73.3±3.8 | 83.3±4.1 | 0.11 | ||
| Maximum stress (kN m-2) | ||||||||
| Twitch | 119±10 | 191±30 | 0.09 | 104±14 | 145±16 | 0.09 | ||
| Tetanic stress | 484±38 | 611±55 | 0.08 | 258±31 | 301±30 | 0.34 | ||
| Peak power output (W kg-1) | 61.3±4.5 | 59.3±2.5 | 0.70 | 66.9±4.0 | 60.9±4.3 | 0.34 | ||
| . | Iliofibularis . | . | . | Sartorius . | . | . | ||
|---|---|---|---|---|---|---|---|---|
| . | Control . | Aaestivator . | P . | Control . | Aaestivator . | P . | ||
| Time (ms) | ||||||||
| To peak twitch | 33.9±1.8 | 45.0±1.6 | 0.003 | 33.6±1.3 | 38.2±2.1 | 0.09 | ||
| From peak twitch to half relaxation | 21.9±1.9 | 33.0±0.7 | 0.001 | 24.2±2.6 | 35.3±4.6 | 0.07 | ||
| To half peak tetanus | 38.5±2.5 | 39.4±1.7 | 0.81 | 25.9±1.3 | 25.2±0.3 | 0.60 | ||
| From last stimulus to half tetanus relaxation | 71.1±5.8 | 89.3±1.4 | 0.02 | 73.3±3.8 | 83.3±4.1 | 0.11 | ||
| Maximum stress (kN m-2) | ||||||||
| Twitch | 119±10 | 191±30 | 0.09 | 104±14 | 145±16 | 0.09 | ||
| Tetanic stress | 484±38 | 611±55 | 0.08 | 258±31 | 301±30 | 0.34 | ||
| Peak power output (W kg-1) | 61.3±4.5 | 59.3±2.5 | 0.70 | 66.9±4.0 | 60.9±4.3 | 0.34 | ||
Values are means ± s.e.m. (N=6 for controls and N=5 for aestivators). P values given are for t-tests.