Question

4. For the following exercises, perform the muscle contraction and determine if it is an isotonic or isometric contraction.

a. Place your hand underneath the table. Push up on the table up while keeping your arm straight.

b. Lay on your back on the floor. Pull your chest up to your knees (a sit up).

c. Sit in a chair and place a ball (or other object) between your feet. Slowly lift your feet into the air.

d. Lie on your side on the floor and raise your upper leg towards the ceiling.

e. Sit in a non-moveable chair and place your feet straight out in front of you against a solid object (like your desk). Try to push away the desk.

Answer 1

Ans a. Isometric contraction

Ans b. Isotonic contraction

Ans c. Isotonic contraction

Ans d. Isometric contraction

Ans e. Isotonic contraction

Isometric contraction means in which muscle does not shorten.

Isotonic contraction means in which muscle maintains same tension as in contracts or expands.