During the eccentric phase, what is the primary muscle group invovled in standing trunk flexion?

During the eccentric phase, what is the primary muscle group invovled in standing trunk flexion?

During the eccentric phase, what is the primary muscle group invovled in standing trunk flexion?


a. iliopsoas

b. rectus abdominis

c. erector spinae

d. biceps femoris


Answer: c. erector spinae


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