Figure 2From: Shoulder muscle EMG activity during push up variations on and off a Swiss ballRaw EMG during three push ups with the hands on an exercise bench or a swiss ball for the triceps and pectoralis major muscle. PMBench = Pectoralis Major EMG on bench, PMBall = Pectoralis Major EMG on ball. Bias added to triceps activity for ease of viewing. Trial was 30 seconds in length.Back to article page