2016.05.25 CSCS Daily Study Question:
In general, a fluid-resisted, non-pump-operated, resistance-training machine lacks which type of muscle action for the agonist muscle group?
(A) Concentric
(B) Eccentric
(C) Isometric
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Correct Answer:
(B) Eccentric
Explanation:
The fluid cylinder of a fluid-resisted machine provides resistance that acts in the isometric and concentric phases for the agonist muscle group. When returning the resistance machine lever to the starting position of the lift, the fluid cylinder does not provide eccentric resistance against the agonist muscle group. However, the machine may provide concentric resistance for the antagonist muscle group as the lever returns to the starting position.
Reference:
Essentials of Strength Training & Conditioning 3rd edition p. 82 – 83
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2016.05.25 CSCS Daily Study Question