例句與造句

1. Due to its common embryonic origin, innervation, and action the ischiocondylar portion ( or hamstring portion ) is often considered part of the hamstring group of muscles.
2. Studies have shown that  the hamstring group reaches peak elongation and acts eccentrically at the hip and knee during the late swing phases of running and that  the hamstrings are most active and develop the greatest torques at the hip and knee during the late swing through midstance phase of running .  Thus, the hamstrings reach their maximum length while attempting to forcefully contract eccentrically and switch functions to immediately produce a concentric contraction, which makes the terminal part of swing phase the most vulnerable for injury.
3. It's difficult to find hamstring group in a sentence. 用hamstring group造句挺難的