Table 4.
Means (± standard deviation) of the electromyographic data (percentage of the maximum during MVC test) of the trailing limb during stance and swing phase.
| no obstacle | 10% | 20% | p-values | |||
|---|---|---|---|---|---|---|
| Stance Phase | Medial gastrocnemius | Before fatigue | 17.0 (5.3) | 17.8 (6.0) | 17.8 (6.7) | pf = .143 |
| After fatigue | 21.1 (12.9) | 20.5 (10.4) | 20.5 (9.5) | ph =.806 | ||
| 5 minutes after fatigue | 23.1 (12.7) | 22.3 (11.8) | 20.8 (11.7) | pf×h = .739 | ||
| Soleus | Before fatigue | 20.8 (8.8) | 20.9 (9.0) | 20.9 (9.3) | pf = .336 | |
| After fatigue | 21.2 (11.7) | 21.8 (10.0) | 22.6 (13.9) | ph = .992 | ||
| 5 minutes after fatigue | 25.6 (16.6) | 24.6 (13.3) | 24.3 (13.7) | pf×h = .904 | ||
| Tibialis anterior | Before fatigue | 20.2 (9.3) | 19.2 (8.1) | 19.0 (8.9) | pf = .306 | |
| After fatigue | 19.8 (10.7) | 20.4 (9.8) | 19.6 (10.9) | ph = .939 | ||
| 5 minutes after fatigue | 22.1 (12.5) | 23.5 (14.2) | 23.6 (11.8) | pf×h = .846 | ||
| Swing Phase | Medial gastrocnemius | Before fatigue | 12.3 (4.6) | 14.7 (4.6) | 15.3 (6.1) | pf = .248 |
| After fatigue | 15.5 (9.3) | 18.8 (11.2) | 20.0 (7.7) | ph = .531 | ||
| 5 minutes after fatigue | 19.5 (13.0) | 19.0 (10.7) | 16.5 (9.3) | pf×h = .026 | ||
| Soleus | Before fatigue | 17.4 (5.6) | 19.3 (7.4) | 19.5 (7.5) | pf = .616 | |
| After fatigue | 18.1 (9.4) | 20.3 (7.7) | 21.4 (10.5) | ph = .597 | ||
| 5 minutes after fatigue | 21.8 (14.7) | 22.2 (11.0) | 19.6 (9.8) | pf×h = .419 | ||
| Tibialis anterior | Before fatigue | 15.9 (5.7) | 17.6 (7.0) | 17.7 (8.0) | pf = .782 | |
| After fatigue | 16.1 (10.2) | 18.1 (6.7) | 17.7 (5.1) | ph = .483 | ||
| 5 minutes after fatigue | 17.7 (10.2) | 19.8 (10.1) | 17.9 (8.4) | pf×h = .955 | ||
pf, ph, and pf×h: significance level for the factors concerning fatigue (before, after and 5 minutes after), the presence of the obstacle or obstacle height (10% and 20% of lower limb length), and their interaction, respectively.