Question

Vertical Jump:

Mechanical energy transfer-
During take off hip and knee extending how do two joint muscles act?

a) Hip flexors shorten, and knee extensors lengthen.
b) Hip flexors lengthen, and knee extensors shorten.
c) Hip extensors shorten, and knee flexors lengthen.
d) Hip extensors lengthen, and knee flexors shorten.

Answer 1

During takeoff in a vertical jump, the hip extensors lengthen while the knee flexors shorten.

Step-by-step explanation:

During takeoff in a vertical jump, the hip and knee joints extend. The muscles acting at these joints are the hip extensors and the knee flexors. Therefore, the correct answer is d) Hip extensors lengthen, and knee flexors shorten.