Issn Print: 0195-9131
Publication Date: 1997/05/01
SERRATUS ANTERIOR ACTIVITY DURING SELECTED REHABILITATION EXERCISES 237
Excerpt
Muscle activity of a primary scapular stabilizer, the serratus anterior(SA), was investigated to provide an appropriate progression of rehabilitation. Six male subjects (32.5 y, 180.3 cm, 75.1 kg), with no history of shoulder injury, performed ten repetitions of eight exercises: shoulder extension (SE), forward punch (FP), serratus anterior punch (SP), dynamic“hug” (DH), scaption with external rotation (S), press up (P), push up plus (PU+) and a knee push up plus (KPU+). Resistance was provided by body weight, an elastic cord or dumbbells. EMG data were collected (1000 Hz) from the serratus anterior, upper and middle trapezius, and anterior and posterior deltoid muscles. All exercises were performed below 90 degrees of humeral elevation to avoid an impingement position. Each exercise was partitioned into concentric (conc) and eccentric (ecc) phases and analyzed for average and peak EMG amplitude (%MVC). Table
These data provide a progressive continuum of exercises for rehabilitating or training the serratus anterior.
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