Biomechanics and Kinesiology Flashcards
Concentric contraction
The contraction of a muscle causing it to shorten, causes less soreness and inflamtion than the eccentric
Eccentric negative contraction
The lengthening of a muscle under load. Occurs during the negative of the movement
Kinesiology
The study of movement (in the case of the human body)
Biomechanics
The study of forces acted on and generated in the body at any levels. As well as their effects.
Isometric contraction
Conraction of a muscle without significant movement. For example what your core does during a squat, providing stability and use but not the prime movement (your legs).
Compound movement
An excersise or movement that involves more than one joint and muscle group.
Supplemental excersise
Usually a compound excersise performed immediately after the main excersise for the purpose of improving the main/competition movement used.
Accessory/Auxiliary excerise
Performed after the main and supplemental excersises for the support of main lifts or hypertrophy
Midline
A kinesiology term being an imaginery line travelling down the middle of the body seperating the left and right sides.
Flextion/extension
Movements that affect the angle between two parts of the body. Flexion decreases and extension increases. Bending your elbow is flexion and relaxing it is extension.
Supination/pronation
Supination is when sole or palm faces anteriorly, facing out from the body. Pronation is when they face in. Overhand grips are pronation, underhand is supination.
Medial/lateral (internal/external rotation)
Medial rotation is rotation of an appendage towards the midline of the body. Lateral rotation is rotation away from the midline of the body. Like turing your foot inward is medial rotation, and back and outsward is lateral rotation.
Adduction/abduction
Abduction refers to motions that move a structure away from the cente of the body/midline and adduction towards. A lat raise excersise is abduction of the shoulder and going back down is the adduction.
Stretch reflex
When a muscle is quickly lengthened under load (eccentric), a rebound takes place making the following concentric easier. Like when squatting, going down with the eccentric, you can push up at the end snapping like an extended rubber band.