From: Shoulder muscle EMG activity during push up variations on and off a Swiss ball
 | Triceps | Pectoralis Major | Rectus Abdominis | External Oblique | ||||
---|---|---|---|---|---|---|---|---|
 | Bench | Ball | Bench | Ball | Bench | Ball | Bench | Ball |
PUHands | 22.2 ± 8.8 | *43.1 ± 17.3 p = .002 | 21.4 ± 11.8 | 26.65 ± 14.5 p = .341 | 13.4 ± 5.4 | 22.6 ± 8.6 p = .001 | 20.9 ± 15.6 | 24.07 ± 11.9 p = .1191 |
PUFeet | 32.7 ± 17.5 | 29.9 ± 10.1 p = .355 | 30.4 ± 9.7 | 29.9 ± 7.6 p = .717 | 19.2 ± 6.9 | 19.6 ± 7.14 p = .742 | 27.79 ± 13.2 | 26.7 ± 9.8 p = .575 |
PUPHands | 18.7 ± 10.3 | *29.6 ± 14.7 p = .024 | 14 ± 7.2 | 21.4 ± 18.5 p = .079 | 14.9 ± 5.5 | *25.4 ± 10.2 p = .011 | 19.2 ± 11.9 | *23.9 ± 11.9 p = .0069 |