Grip strength

Grip strength is the force produced by the hand and forearm muscles when gripping an object. It depends on muscle capacity, hand geometry, and the resistance being held.

Finger flexor muscles: Forearm muscles whose tendons bend the fingers at their joints. They generate much of the force that closes the fingers around an object.
Grip dynamometry: The measurement of hand-grip force using a dynamometer. It is the standard practical method for quantifying grip strength.
Frailty: A state of reduced physiological reserve that increases vulnerability to stressors. Low grip strength is one measure used in some frailty assessments.
Grip dynamometer: An instrument that measures the force exerted during a hand grip. A maximal dynamometer reading differs from endurance or task-specific grip tests.
Skeletal muscle: Muscle tissue attached to bones that produces voluntary movement and force. Grip force ultimately comes from skeletal-muscle contraction.
Intrinsic hand muscles: Muscles located within the hand that move the fingers and thumb. They stabilize the fingers and coordinate force during a grip.
Muscle strength testing: The assessment of a muscle or muscle group’s ability to generate force. Grip testing is a simple form of strength assessment.
Sarcopenia diagnosis: The clinical assessment of age-related loss of muscle strength and mass. Grip force is used in diagnostic criteria for low muscle strength.
Pinch strength: The force produced when the thumb presses against one or more fingers. Pinch tests isolate thumb-finger force rather than whole-hand grasping force.
Force: A physical interaction that can change an object’s motion or shape. Grip strength is expressed as the force applied to an object.

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