Table 2.
Prelanding Integrated Electromyography of Knee Muscles and Knee Sagittal-Plane Kinematics for the Chronic Ankle Instability and Control Groups
| Variable |
Chronic Ankle Instability Group |
Control Group |
t36 |
P Value |
Power |
| Integrated electromyography, %·ms | Mean ± SD (95% Confidence Interval) | ||||
| Vastus medialis oblique | 52.28 ± 11.25 (47.30, 57.26) | 43.90 ± 10.13 (38.92, 48.88) | 2.41 | .021a | 0.78 |
| Vastus lateralis | 46.51 ± 10.99 (41.76, 51.27) | 45.85 ± 9.30 (41.10, 50.60) | 0.20 | .843 | 0.07 |
| Medial hamstrings | 42.80 ± 8.25 (37.94, 47.40) | 41.16 ± 12.60 (36.70, 46.16) | 0.47 | .639 | 0.12 |
| Lateral hamstrings | 43.11 ± 13.04 (37.53, 48.70) | 50.50 ± 10.87 (44.91, 56.08) | −1.90 | .066 | 0.57 |
| Kinematics, ° | |||||
| At 100 ms pre–ground impact | 4.84 ± 10.58 (9.60, 0.08) | 8.88 ± 7.31 (12.17, 5.59) | −0.72 | .477 | 0.39 |
a
Difference between groups in prelanding integrated electromyography of the vastus medialis oblique (P < .05).