51 手捧重物緩慢放至桌上,肘關節屈肌(elbow flexors)主要做的是那類的肌肉收縮?
(A)等長收縮(isometric contraction)
(B)離心收縮(eccentric contraction)
(C)向心收縮(concentric contraction)
(D)等速收縮(isokinetic contraction)

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統計: A(2), B(27), C(6), D(0), E(0) #1252263