Average exposure levels at onset and change from one round to the next in a follow up of 113 manual workers with shoulder tendonitis
| Average exposure level at baseline, median (range) | No change, % | Increase, % | Decrease, % | |
|---|---|---|---|---|
| MVC, maximal voluntary contraction. | ||||
| Duration of manual tasks (cycle time, seconds) | 13.1 (2820) | 90.6 | 8.1 | 1.3 |
| Movements in shoulder/minute | 13.8 (36) | 81.2 | 10.1 | 8.7 |
| Force requirements in shoulder (scale 1–5, MVC) | 1.0 (3.0) | 91.9 | 4.7 | 3.4 |
| Perception of (score values 0–4) | ||||
| Job demands | 3.0 (3.0) | 64 | 12 | 24 |
| Decision latitude | 2.9 (2.6) | 49 | 19 | 32 |
| Social support | 2.0 (3.0) | 46 | 23 | 31 |