Electromyographical Comparison of Four Common Shoulder Exercises in Unstable and Stable Shoulders

<table>Illustration of the performance of scaption exercise with subject aligning their arm motion with the portable wall and the photo cells aligned in 30° arcs.</table>

Rehabilitation Research and Practice

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Figure 1

Figure 1: Electromyographical Comparison of Four Common Shoulder Exercises in Unstable and Stable Shoulders 