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.