Posture of jack-knife stretching. (A) Starting position, (B) Stretching

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Kosuke TAKEUCHI, Kobe International University

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The acute effects of high-intensity jack-knife stretching on the

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Posture of jack-knife stretching. (A) Starting position, (B

Jack-knife stretching promotes flexibility of tight hamstrings

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Kosuke TAKEUCHI, Kobe International University

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Jack-knife stretching and active knee extension stretching equally