Table 3.
Repeated measures analysis of variance results of mean (±SD) EMG activity with 80, 90, and 100% loads of 1RM during descending and ascending phases of squat as a percentage of maximal voluntary isometric contraction (% MVIC).
| Muscles | 80% | 90% | 100% | |||
|---|---|---|---|---|---|---|
| Descend | Ascend | Descend | Ascend | Descend | Ascend | |
| RF | 35.8 ± 14 | 36 ± 16.2 | 51 ± 39.1 | 47.6 ± 26.9 | 53.8 ± 36.5 | 52.1 ± 38.3 |
| VL | 52.4 ± 20 | 59 ± 28.2 | 60.6 ± 40.8 | 65.7 ± 33.9 | 63 ± 40.9 | 72.4 ± 65.9 |
| VM | 52.8 ± 32.7 | 61.7 ± 43.8 | 64.6 ± 42.8 ∗ | 70.4 ± 46.7 | 72 ± 57.6 | 76.4 ± 61.8 ∗ |
| ES | 35.8 ± 14.4 | 41.9 ± 16.1 | 50.1 ± 25.2 ∗ | 52.9 ± 25.2 | 52.1 ± 27.2 ∗ | 55.8 ± 26 |
| GM | 19.7 ± 11.5 | 37.2 ± 20 | 26 ± 15.7 ∗ | 44.8 ± 24.6 | 30 ± 17.9 ∗ | 50.2 ± 30.8 ∗ |
| BF | 19.6 ± 22.5 | 29 ± 24.8 | 22.1 ± 23.2 | 34.3 ± 28.3 | 23.8 ± 16.9 | 39.6 ± 23.1 |
| ST | 17 ± 10.4 | 29.1 ± 24 | 15.9 ± 7.2 | 29.1 ± 16.9 | 19.19 ± 11.4 | 39.5 ± 28.3 |
∗Repeated measures analysis of variance results significantly different (p < 0.05) from 80%.