Which of the following reasons best explains why it is easier to do a "chin-up" (hands supinated) than a "pull-up" (hands pronated)?
A) Because the brachialis is a less-effective elbow flexor in the pronated position.
B) Because the biceps is a less-effective flexor in the pronated position.
C) Because the brachioradialis is a less-effective flexor in the pronated position.
D) Because the long digital flexors can better assist with elbow flexion in the supinated position.
E) Because the humero-radial-ulnar joint is better aligned in the supinated position.
Ans: B
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