Definitions

Horizontal Adduction- movement of arm in the transverse plane from a lateral position to an anterior position

Extension-to straighten out a joint

Frontal Plane-longitudinal plane dividing the body into front and back halves

Abduction-away from midline

Anteroposterior Axis-imaginary line around which the frontal rotations occur

Momentum-a measure of the motion of a body equal to the product of its mass and velocity

Center of Gravity-point around which the mass and weight of a body are balanced

Adduction-towards midline

Muscle Endurance-ability of the muscle to exert tension over time

Static Position-constant state of motion

Posterior Pelvic Tilt-pelvis tilted back aiding with flexion

Hip Flexors-rectus femoris, Iliopsoas, Sartorius, Pectineus, Tensor fascia latae

Knee Flexors-Semitendinous, Semimembranosus, Vastus medialis, Biceps femoris, Sartorius

Agonist-muscle acting to cause movement

Antagonist-muscle acting to slow or stop movement

Superior-structure being closer to the head or higher than another structure

Flexion-joint is bent or angle between bones of the joint or decreased

Hip Extensors-gluteus maximus, semitendinosus, semimembranosus, biceps femoris

Sagittal Plane-longitudinal plane dividing the head and torso into left and right parts

Mediolateral Axis-imaginary line around which sagittal plane rotations occur