Table 3.
Two-way, repeated measures ANOVAs were used to further examine the effect of weight and speed during the ascent phase of lifting for each of torso flexion segment. For four of the five segments, weight was found to have a significant effect on the lumbar curvature.
| Torso Inclination (% of Lift Inclination) | Variable | epsilon | df | F | p |
|---|---|---|---|---|---|
| 0–20 | Weight | 1.000 | 1.000 | 1.803 | 0.209 |
| Speed | 1.000 | 1.000 | 2.410 | 0.152 | |
| Wt*Speed | 1.000 | 1.000 | 3.867 | 0.078 | |
| 20–40 | Weight | 1.000 | 1.000 | 19.030 | 0.001 |
| Speed | 1.000 | 1.000 | 1.306 | 0.280 | |
| Wt*Speed | 1.000 | 1.000 | 4.870 | 0.052 | |
| 40–60 | Weight | 1.000 | 1.000 | 14.255 | 0.004 |
| Speed | 1.000 | 1.000 | 1.422 | 0.261 | |
| Wt*Speed | 1.000 | 1.000 | 2.654 | 0.134 | |
| 60–80 | Weight | 1.000 | 1.000 | 7.945 | 0.018 |
| Speed | 1.000 | 1.000 | 1.430 | 0.259 | |
| Wt*Speed | 1.000 | 1.000 | 4.307 | 0.065 | |
| 80–100 | Weight | 1.000 | 1.000 | 7.663 | 0.020 |
| Speed | 1.000 | 1.000 | 0.284 | 0.606 | |
| Wt*Speed | 1.000 | 1.000 | 3.483 | 0.092 |