Demographic and clinical characteristics of workers with and without shoulder tendonitis
| Shoulder tendonitis | |||
|---|---|---|---|
| Yes | No | ||
| Characteristic | With follow up, n=113 | Without follow up, n=54 | n=2906 |
| MCV, maximal voluntary contraction, categorised on 5 point ordinal scale. | |||
| Center, Aarhus/Glostrup/Herning, % | 23/16/61 | 26/19/55 | 27/39/33 |
| Women, % | 61 | 62 | 58 |
| Age, years, mean (SD) | 46 (8.9) | 44 (8.7) | 38 (10.7) |
| Body mass index, kg/m2, mean (SD) | 26.9 (4.8) | 26.3 (4.0) | 24.5 (4.2) |
| Physically active at least 4 hours a week, % | 30 | 40 | 27 |
| Shoulder trauma, % | 10.7 | 10.9 | 3.4 |
| Shoulder surgery, % | 0.9 | 0 | 0.4 |
| High intrinsic effort personality, % | 36.4 | 30.1 | 26.7 |
| Shoulder pain index (0–36), mean (SD) | 21.7 (7.0) | 23.3 (7.3) | 4.6 (6.9) |
| Direct shoulder tenderness (palpation or impingement), % | 100 | 100 | 14 |
| Indirect shoulder tenderness (pain at resisted abduction), % | 100 | 100 | 2 |
| Shoulder strength, kg, mean (SD) | |||
| Men | 9.5 (2.8) | 9.7 (2.2) | 10.7 (2.3) |
| Women | 4.5 (1.9) | 3.9 (2.2) | 5.6 (1.5) |
| Pressure algometric threshold (average thigh and tibia), kPa, mean (SD) | |||
| Men | 735 (138) | 672 (160) | 799 (200) |
| Women | 473 (155) | 525 (174) | 547 (178) |
| Neck pain index (0–36), mean (SD) | 15 (9) | 16 (8) | 6 (7) |
| Elbow pain index (0–36), mean (SD) | 9 (10) | 14 (12) | 2 (6) |
| Repetitive work, % | 76 | 70 | 64 |
| Repetitive work characteristics (median, 25–75 percentiles) | |||
| Task cycle time, seconds | 12 (30) | 9 (23) | 19 (63) |
| Shoulder force, MVC, score 1–5 | 1 (0.5) | 1 (1.5) | 0.8 (1.2) |
| Movements in shoulder, number/minute | 15 (15) | 17 (11) | 10 (17) |