Table 2.
Weight-adjusted means and standard deviations of muscle contractile properties within each group during elicited contractions of the extensor digitorum longus.
| Maximum twitch force (g) |
Twitch contraction time (ms) |
Half decay time (ms) |
Tetanic force (g) | Fatigue index (%) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Variable | M | SD | M | SD | M | SD | M | SD | M | SD |
| Young | 48.84 | 14.1 | 21.04 | 2.9 | 67.24 | 15.0 | 162.17a | 38.9a | 29.32 | 9.0 |
| Old | 33.28 | 8.3 | 20.06 | 1.8 | 65.37 | 11.6 | 97.77 | 33.4 | 34.56 | 9.0 |
| F (dfs) | 3.38 (1, 10) | 0.32 (1, 10) | 0.04 (1, 10) | 5.78 (1, 10) | 0.61 (1, 10) | |||||
Note. Group means, standard deviations, F values (and degrees of freedom [dfs]) for analyses of covariance are shown.
a
Significantly different (p < .05).