Electromyographic activity of upper trapezius (UT), middle trapezius (MT), lower trapezius (LT), and serratus anterior (SA), expressed as percentage of maximal voluntary contraction (MVC), during isokinetic retraction movements at low (12.2 cm/s; five repetitions) and high (36.6 cm/s; 10 repetitions) velocity
| Velocity (cm/s) | UT (% MVC) | MT (% MVC) | LT (% MVC) | SA (% MVC) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Non-injured | Injured | p Value | Non-injured | Injured | p Value | Non-injured | Injured | p Value | Non-injured | Injured | p Value | |
| Values are mean (SD) (n = 19). | ||||||||||||
| *Significant difference, p<0.05. | ||||||||||||
| 12.2 | 37.3 (17.8) | 36.3 (13.3) | 0.83 | 23.7 (16.1) | 19.5 (11.3) | 0.27 | 13.3 (7.3) | 13.0 (8.7) | 0.89 | 10.9 (12.7) | 11.3 (11.3) | 0.88 |
| 36.6 | 45.0 (16.1) | 43.2 (9.8) | 0.62 | 25.5 (16.7) | 19.9 (10.2) | 0.23 | 17.8 (12.9) | 11.7 (4.76) | 0.04* | 14.7 (12.6) | 18.7 (18.8) | 0.37 |