well, from a biomechanical standpoint, yes...because, when you internally and externally rotate the forearm, you cause the insertion tendons and their insertion points to change positions, wrap around other bones, creating friction thus more resistance. For example, hold your arm out, palm up..notice how your biceps tendon goes straight down and inserts into the ulna...now rotate your hand down, now you biceps tendon, inserting in the same place, now has to wrap around the internally rotated ulna.
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well, from a biomechanical standpoint, yes...because, when you internally and externally rotate the forearm, you cause the insertion tendons and their insertion points to change positions, wrap around other bones, creating friction thus more resistance. For example, hold your arm out, palm up..notice how your biceps tendon goes straight down and inserts into the ulna...now rotate your hand down, now you biceps tendon, inserting in the same place, now has to wrap around the internally rotated ulna.