Table 3.
Comparison of iEMG values between light and heavy groups
| 30 | 60 | 90 | 120 | 150 | 180 | 210 | 240 | 270 | 300 (s) | |
|---|---|---|---|---|---|---|---|---|---|---|
| Biceps brachii (mV) |
|
|
|
|
|
|
|
|
|
|
| Light |
27.3 ± 12.8 |
26.5 ± 12.5 |
24.5 ± 10.1 |
25.1 ± 11.0 |
23.5 ± 9.5 |
24.3 ± 9.6 |
22.2 ± 8.7 |
23.9 ± 10.1 |
22.2 ± 9.7 |
23.2 ± 10.6 |
| Heavy |
28.5 ± 9.5 |
26.2 ± 6.9 |
24.0 ± 6.2 |
23.2 ± 6.9 |
22.7 ± 6.9 |
22.7 ± 7.4 |
22.2 ± 8.0 |
22.9 ± 8.7 |
22.9 ± 9.1 |
22.3 ± 9.2 |
| Triceps brachii (mV) |
|
|
|
|
|
|
|
|
|
|
| Light |
69.5 ± 25.6 |
67.4 ± 22.5 |
65.7 ± 20.5 |
65.6 ± 18.2 |
67.3 ± 18.8 |
70.3 ± 18.8 |
68.7 ± 18.2 |
68.6 ± 17.0 |
68.4 ± 15.4 |
70.4 ± 16.8 |
| Heavy |
50.1 ± 9.0 |
51.1 ± 10.3 |
50.4 ± 11.3 |
52.0 ± 12.7 |
51.2 ± 13.5 |
52.5 ± 16.0 |
53.0 ± 16.0 |
55.2 ± 18.9 |
53.7 ± 17.0 |
55.8 ± 16.5 |
| Trapezius (mV) |
|
|
|
|
|
|
|
|
|
|
| Light |
26.8 ± 14.8 |
25.1 ± 14.5 |
21.9 ± 11.2 |
21.0 ± 10.2 |
20.8 ± 9.6 |
21.9 ± 9.4 |
21.1 ± 8.0 |
22.3 ± 9.2 |
21.8 ± 7.2 |
25.5 ± 10.1 |
| Heavy |
14.3 ± 4.8* |
13.7 ± 4.7 |
13.3 ± 4.9 |
13.5 ± 5.4 |
14.2 ± 9.0 |
13.6 ± 7.9 |
12.7 ± 5.2* |
12.1 ± 3.9* |
12.3 ± 5.4** |
13.3 ± 5.8** |
| Erector spinae (mV) |
|
|
|
|
|
|
|
|
|
|
| Light |
19.0 ± 5.4 |
19.8 ± 6.3 |
19.4 ± 5.7 |
19.1 ± 5.0 |
18.7 ± 5.1 |
19.5 ± 5.4 |
19.1 ± 5.2 |
20.0 ± 4.8 |
20.0 ± 4.7 |
20.5 ± 4.4 |
| Heavy |
12.2 ± 4.9* |
12.8 ± 6.0* |
13.0 ± 5.4* |
12.7 ± 4.8* |
12.9 ± 4.5* |
12.9 ± 3.9* |
13.1 ± 4.3* |
13.2 ± 4.3** |
13.2 ± 4.8** |
13.4 ± 5.1** |
| External oblique (mV) |
|
|
|
|
|
|
|
|
|
|
| Light |
22.0 ± 9.4 |
25.9 ± 14.2 |
22.6 ± 12.0 |
22.4 ± 11.8 |
19.6 ± 8.8 |
21.6 ± 9.6 |
20.6 ± 8.8 |
22.2 ± 10.2 |
21.0 ± 9.2 |
22.0 ± 10.5 |
| Heavy |
11.3 ± 6.3* |
10.9 ± 5.4* |
10.3 ± 4.9* |
9.6 ± 4.1* |
9.5 ± 4.6* |
9.5 ± 4.4** |
9.3 ± 4.5** |
9.1 ± 4.1** |
8.6 ± 3.9** |
8.3 ± 3.2** |
| Abdominal rectus (mV) |
|
|
|
|
|
|
|
|
|
|
| Light |
18.4 ± 6.7 |
19.3 ± 10.3 |
18.2 ± 9.6 |
18.4 ± 11.2 |
17.3 ± 10.0 |
18.1 ± 9.5 |
17.3 ± 9.5 |
17.9 ± 10.7 |
17.6 ± 9.3 |
17.7 ± 9.5 |
| Heavy |
8.7 ± 3.5** |
8.4 ± 3.3* |
8.0 ± 2.7* |
7.7 ± 2.7* |
7.0 ± 2.4* |
7.2 ± 2.4** |
7.0 ± 2.5** |
7.2 ± 2.8* |
7.0 ± 2.6** |
7.3 ± 2.9* |
| Rectus femoris (mV) |
|
|
|
|
|
|
|
|
|
|
| Light |
7.2 ± 2.3 |
8.6 ± 4.1 |
10.6 ± 5.6 |
11.1 ± 6.7 |
10.5 ± 6.8 |
11.2 ± 7.2 |
9.7 ± 5.9 |
10.2 ± 7.1 |
10.7 ± 6.5 |
11.1 ± 7.9 |
| Heavy |
4.3 ± 0.8** |
4.1 ± 0.7* |
3.7 ± 0.7** |
3.7 ± 0.7* |
3.5 ± 0.7* |
3.7 ± 1.1* |
3.4 ± 0.9* |
3.7 ± 1.1* |
3.9 ± 1.7* |
3.5 ± 0.8* |
| Biceps femoris (mV) |
|
|
|
|
|
|
|
|
|
|
| Light |
32.3 ± 24.8 |
28.5 ± 18.2 |
24.0 ± 17.1 |
22.1 ± 15.3 |
23.3 ± 15.4 |
23.8 ± 15.5 |
24.3 ± 16.7 |
26.4 ± 16.7 |
26.4 ± 17.1 |
26.8 ± 15.7 |
| Heavy | 14.1 ± 6.6 | 15.2 ± 7.1 | 15.1 ± 5.6 | 15.1 ± 5.5 | 15.3 ± 5.5 | 14.7 ± 5.4 | 14.5 ± 4.8 | 14.5 ± 4.9 | 14.6 ± 4.5 | 14.5 ± 4.2 |
Values are means ± standard deviation. Significant difference between light and heavy groups. (*P <0.05, **P <0.01; unpaired t test); n = 9 for all groups.