Table 3.
The mean (SD) of muscle activity (uv) before and after the test in a small box on a different frequency and height of lifting
| SMALL BOX | 1 lift/min(F-K) | 4.3 lift/min(F-K) | 6.67 lift/min(F-K) | 1 lift/min( K-S) | 4.3 lift/min( K-S) | 6.67 lift/min( K-S) | 1 lift/min(S-A) | 4.3 lift/min(S-A) | 6.67 lift/min(S-A) | |
|---|---|---|---|---|---|---|---|---|---|---|
| Erector spine(L3) | Before | 155.41 (40.10) | 136.62 (34.88) | 121.00 (36.21) | 131.03 (30.33) | 104.85 (22.85) | 91.10 (18.81) | 117.50 (30.04) | 106.28 (18.38) | 84.85 (25.47) |
| after | 169.58 (44.36) | 148.58 (33.08) | 133.07 (29.12) | 139.85 (36.31) | 111.61 (22.14) | 102.06 (26.94) | 130.30 (33.77) | 124.95 (31.15) | 102.02 (41.34) | |
| Erector spine(T9) | Before | 152.33 (42.97) | 125.99 (33.41) | 107.05 (26.14) | 120.09 (41.64) | 92.34 (22.67) | 80.99 (18.26) | 109.50 (29.98) | 93.61 (15.84) | 79.21 (20.27) |
| after | 143.45 (45.93) | 145.48 (25.89) | 117.93 (40.81) | 123.73 (49.39) | 104.71 (24.19) | 91.50 (23.04) | 119.60 (44.34) | 105.10 (17.03) | 98.93 (30.85) | |
| Left external oblique | Before | 64.26 (19.07) | 57.62 (18.69) | 50.63 (17.71) | 48.80 (13.82) | 42.22 (9.66) | 38.10 (10.33) | 42.65 (16.46) | 39.36 (10.79) | 33.36 (12.40) |
| after | 61.77 (17.96) | 58.98 (22.32) | 55.61 (22.44) | 52.35 (18.45) | 44.11 (10.68) | 41.71 (16.70) | 49.25 (18.55) | 45.06 (13.53) | 36.25 (10.80) | |
| Right external oblique | Before | 47.23 (16.14) | 41.73 (14.07) | 34.19 (8.81) | 37.15 (14.06) | 30.11 (9.22) | 26.79 (7.40) | 31.38 (12.38) | 28.21 (8.64) | 25.13 (7.71) |
| after | 45.57 (14.68) | 43.82 (13.15) | 35.62 (10.04) | 39.55 (13.48) | 32.25 (13.99) | 29.81 (14.70) | 38.03 (14.73) | 30.37 (8.40) | 30.34 (8.32) | |