In dynamic contractions , why might EMG amplitude appear lower during eccentric muscle actions despite equal torque output?

Question

In  dynamic contractions , why might EMG amplitude appear lower during eccentric muscle actions despite equal torque output?

Answer

Because the signal is filtered out by the band-pass filter

Answer

Because fewer motor units are activated to produce the same force

Answer

Because the electrodes lose contact during lengthening

Answer

Because eccentric actions produce higher metabolic cost

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