Variance components of trunk flexion over 20°, trunk flexion over 45°, and lifting and carrying loads over 10 kg, expressed in percentage work time for the group approach
| (n = 212) | S2bg | S2bs | S2ws |
|---|---|---|---|
| S2bg, between group variance; ‡S2bs, between subject variance; §S2bs, within subject variance. | |||
| Trunk flexion over 20° | 3.2 | 94.1 | 137.8 |
| (1.3%) | (40.1%) | (58.6%) | |
| Trunk flexion over 45° | 2.8 | 12.0 | 25.5 |
| (6.8%) | (29.8%) | (63.4%) | |
| Lifting and carrying loads over 10 kg | 0.7 | 0.6 | 6.2 |
| (9.4%) | (8.4%) | (82.2%) | |