NSCF Certified Personal Trainer Practice Exam

Closed kinetic chain exercises are characterized by the distal segment (such as the hands or feet) being fixed in space, while the body moves. These types of exercises typically involve multiple joints and muscle groups working together, contributing to functional strength and stability.

In the context of the push-up, for instance, the hands are fixed on the ground, allowing the body to move around this fixed point. This creates a scenario where the exercise engages several muscle groups simultaneously, including the chest, shoulders, arms, and core, promoting a more integrated form of strength training.

Similarly, in a pull-up, the hands are fixed on a bar while the body is lifted upward. This configuration again emphasizes the principles of closed kinetic chain exercises, where the upper body is worked along with stabilizing muscles in the torso and lower body.

Although a hanging leg raise may seem to involve a fixed grip and moving legs, the key aspect is that the bar prevents the arms from moving while the legs are lifted, which maintains the integrity of the concept of a closed chain exercise.

Thus, since all the listed exercises fit the description of closed kinetic chain exercises by having a fixed point, the correct answer, which encompasses each of these movements, reflects the fundamental principle underlying these types