Definitions

1.Flexion- movement in the sagittal plane, forwards.
2.Transverse plane- plane in which horizontal body and body segment movements occur when the body is in an erect standing position.
3.Sagittal plane- plane in which forward and backward movements of the body and body segments occur.
4.Hyperextension- movement in the sagittal plane, backwards.
5.Pronation- turning of the forearm, downward.
6.Bend- asymmetric loading that produces tension on one side of a body's longitudinal axis and compression on the other side.
7.Force- push or pull; the product of mass and acceleration
8.Center of gravity- point around which a body's weight is equally balanced, no matter how the body is positioned.
9.Range of motion- angle through which a joint moves from anatomical position to the extreme limit of segment motion in a particular direction.
10.Anatomical position- erect standing position with all body parts, including the palms of the hands, facing forward; considered the starting position for body segment movements.
11.Translation- linear motion.
12.Rectilinear- along a straight line.
13.Linear- along a line that may be straight or curved, with all parts of the body moving in the same direction at the same speed.
14.General motion- involving translation and rotation simultaneously.
15.Dorsiflexion- upward flexion of the ankle.
16.Plantar flexion- bringing the top of the foot away from the lower leg.
17.Torque- rotary effect of a force.