Neuromuscular activation in conventional therapeutic exercises and heavy resistance exercises: Implications for rehabilitation

Tidsskriftartikel - 2006

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Background and Purpose: Central activation failure and muscular atrophy are common after knee joint injury. Thus, exercises that aim to stimulate muscular hypertrophy and increase neural drive to the muscle fibers should be used during rehabilitation. This study examined the level of knee joint neuromuscular activation during 4 conventional therapeutic exercises (quadriceps femoris muscle setting, manual lateralization of the patella, rhythmic stabilization, and the pelvic bridging exercise) and 4 heavy resistance exercises (free-weight squat with a barbell, horizontal seated leg press, isolated knee extension with a cam mechanism, and isolated hamstring muscle curl) in young, untrained men who were healthy. Subjects: Thirteen male subjects (mean age=25.3 years, SD=3.0) with no previous history of knee injury participated in the study. Methods: Neuromuscular activation during the exercises was defined as the root-mean-square (RMS) electromyographic (EMG) signal normalized to the peak RMS EMG signal of a maximal isometric muscle contraction. Results: Low levels of neuromuscular activation were found during all conventional exercises (

Reference

Andersen LL, Magnusson G, Nielsen MBD, Haleem J, Poulsen K, Aagaard P. Neuromuscular activation in conventional therapeutic exercises and heavy resistance exercises: Implications for rehabilitation. Physical Therapy 2006;86(5):683-697.