Question

performing squats is a(n) ______ chain activity during which the femur rolls...
a) closed, posterior
b) open, posterior
c) closed, anterior
d) open, anterior

Explanation:

In biomechanics, a closed - chain activity is one where the distal segment (feet in squats) is fixed (on the ground). During squats, the femur rolls anteriorly (forward) as the knee bends and extends. So performing squats is a closed - chain activity with the femur rolling anteriorly.

Answer:

c) Closed, anterior