CH 7

Question 1

Biomechanics uses the principles of physics to study the movements at

Answer 1

the joints

Question 2

the sagittal

Answer 2

For the sagittal plane, you should imagine a line that bisects the body and breaks it down into right and left sides. Movements occur around the medial-lateral axis.

Question 3

frontal

Answer 3

The frontal plane has a line that bisects the body and makes both front and back halves. The axis that motion happens in is the anterior-posterior axis.

Question 4

transverse plane

Answer 4

The transverse plane has a line that bisects the body and makes both upper and lower halves. Motion occurs along the vertical axis, also known as the longitudinal axis.

Question 5

Isotonic

Answer 5

Isotonic actions are ones where force is produced, muscle tension is developed, and movement occurs through a given range of motion. Isotonic muscle actions are subdivided into concentric and eccentric muscle actions.

Question 6

Isometric

Answer 6

Isometric actions are ones where muscle tension is created without a change in muscle length and no visible movement of the joint.

Question 7

Isokinetic

Answer 7

Isokinetic actions are ones where the speed of movement is fixed, and resistance varies with the force that is exerted.

Question 8

Stretch Shortening Cycle

Answer 8

This is used to describe a loaded eccentric muscle action that allows the muscles to prepare for a rapid contraction. The force put out is going to be increased significantly.