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Back extension / Hyperextension ( lower back exercises )

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Uploaded on Feb 8, 2011

Back extension / Hyperextension ( lower back exercises ): this exercise is vital to strengthen the muscles of the lower back, the lumbar muscles. The back muscles are antagonists of the abdominal muscles, for these reasons we recommend to train in proportion to the abdominal muscles is that the back muscles.
(electronic translation of the text)

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