The type of muscle contraction where the muscle tenses but does not shorten.

When a muscle shortens under tension, it is called_______

As the athlete lowers the weights, his biceps undergo-

As this athlete jumps into the air, his quadriceps undergo-

During the upward phase (pressing) which is undergoing concentric contraction?

During the downward phase of the front squat, which muscle/s is/are undergoing eccentric contraction?

During the downward phase of this squat, what muscles are undergoing isometric contractions?

Select the best example of isometric contraction

When performing a star jump an athlete is moving through which plane?

When performing a front Russian twist an athlete is moving through which plane?

When performing a front front rack lunge an athlete is moving through which plane?