Table 2.
Normalized EMG values for the biceps femoris, semitendinosus (agonists), vastus lateralis, and vastus medialis (antagonists) during knee flexion. Values are presented as least square means (LSM) ± 95% CI and represent % of maximum values. “∗” denotes a significant difference compared with the “speed” condition whereas “#” indicates a significant difference between “normal” and “blindfold.”
| Muscle | Exercise | Nonparetic leg | Paretic leg | ||
|---|---|---|---|---|---|
| Mean (95% CI) | p value | Mean (95% CI) | p value | ||
| Biceps femoris | Speed | 60 (49–71) | 22 (15–30) | ||
| Normal | 59 (48–71) | NS | 19 (12–27) | ∗ | |
| Blindfold | 59 (48–70) | NS | 17 (10–25) | ∗ | |
| Semitendinosus | Speed | 62 (51–74) | 24 (13–35) | ||
| Normal | 61 (50–73) | NS | 22 (10–33) | ∗ | |
| Blindfold | 61 (49–73) | NS | 21 (10–32) | ∗ | |
|
| |||||
| Vastus medialis | Speed | 7 (5–9) | 7 (5–9) | ||
| Normal | 7 (5–9) | NS | 6 (4–8) | # | |
| Blindfold | 8 (5–10) | NS | 4 (2–6) | ∗ | |
| Vastus lateralis | Speed | 5 (3–7) | 8 (5–10) | ||
| Normal | 6 (4–8) | NS | 6 (3–8) | ∗ | |
| Blindfold | 6 (4–8) | NS | 5 (2–7) | ∗ | |
Speed: knee flexions performed with a fast concentric phase.
Normal: knee flexions performed in a controlled manner.
Blindfold: knee flexions performed blindfolded.
NS: not significant.