2016.03.10 CSCS Daily Study Question:
As an athlete is sprinting, what type of muscle action is being performed by the hip of the leg that is in contact with the ground?
(A) Concentric Muscle Action
(B) Eccentric Muscle Action
(C) Isometric Muscle Action
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Correct Answer:
(A) Concentric Muscle Action
Explanation:
As the foot makes contact with the ground in the early support phase of sprinting, the hip of that leg is performing a concentric muscle action to extend the hip (rotating the thigh backwards), minimizing the braking effect of the foot strike.
Reference:
Essentials of Strength Training & Conditioning 3rd edition p. 467
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2016.03.10 CSCS Daily Study Question