Table 3 Comparisons of shoulder muscle activity between the FS (frozen shoulder) group (n = 20) and asymptomatic group (n = 20) at baseline; and before and after one-session muscle release intervention in the FS group (n = 18)
Muscle activity (%) | Asymptomatic group Mean (SD) | FS group | P-valuea | P-valueb | |
|---|---|---|---|---|---|
Pre-test Mean (SD) | Post-test Mean (SD) | ||||
Scaption task | |||||
Pectoralis major | 7.42 (5.87) | 6.90 (3.81) | 6.42 (3.73) | 0.947 | 0.548 |
Infraspintus | 107.36 (44.45) | 81.04 (16.75) | 80.05 (18.19) | 0.043* | 0.911 |
Teres major | 10.54 (4.91) | 11.81 (7.86) | 10.37 (5.34) | 0.968 | 0.203 |
Upper trapezius | 136.41 (77.08) | 103.24 (30.87) | 115.92 (43.93) | 0.265 | 0.032* |
Lower trapezius | 156.11 (63.61) | 100.22 (29.06) | 135.68 (55.30) | 0.001* | 0.022* |
Hand to neck task | |||||
Pectoralis major | 6.41 (4.47) | 6.44 (3.36) | 6.48 (3.88) | 0.640 | 0.786 |
Infraspintus | 108.24 (38.29) | 85.81 (25.51) | 87.59 (35.15) | 0.091 | 0.730 |
Teres major | 10.63 (4.69) | 10.89 (6.53) | 9.61 (4.23) | 0.565 | 0.359 |
Upper trapezius | 85.50 (28.55) | 70.05 (17.89) | 82.19 (30.60) | 0.072 | 0.041* |
Lower trapezius | 129.50 (48.75) | 102.09 (32.93) | 136.13 (53.72) | 0.052 | 0.017* |
Thumb to waist task | |||||
Pectoralis major | 6.53 (4.75) | 12.84 (9.11) | 11.48 (8.26) | 0.014* | 0.355 |
Infraspintus | 62.93 (30.35) | 57.07 (26.57) | 57.10 (29.71) | 0.602 | 0.455 |
Teres major | 9.75 (5.93) | 13.63 (13.00) | 9.64 (5.22) | 0.289 | 0.086 |
Upper trapezius | 22.07 (15.96) | 22.75 (18.30) | 23.72 (17.29) | 0.718 | 0.941 |
Lower trapezius | 25.62 (22.07) | 20.75 (18.49) | 23.91 (16.94) | 0.314 | 0.254 |