Medicine ball

A weighted ball used for strength training, rehabilitation, and athletic exercises involving throwing, catching, or lifting. Its mass and size make it useful for loaded movements and partner drills.

Plyometrics: Training that uses rapid stretch-and-shortening muscle actions to develop explosive movement. Ball throws turn plyometric intent into measurable whole-body power exercises.
Projectile motion: The motion of an object moving through space under gravity and other forces. A throw's trajectory reflects the force and release angle applied to the ball.
Resistance training: Exercise that makes muscles work against an external force or load. Medicine-ball lifting is a form of resistance training using a movable load.
Slam ball: A durable weighted ball designed to be thrown forcefully against the ground. Unlike many medicine balls, slam balls are built for repeated hard impacts.
Rotational training: Exercise that develops force production and control through trunk rotation. Rotational throws train force transfer across the hips and torso.
Impulse: The change in momentum produced by a force acting over time. Forceful throws train the body to generate impulse and transfer it into the ball.
Exercise intensity: The effort or physiological demand imposed by physical activity. Ball weight, speed, and repetition count all influence drill intensity.
Wall ball: A soft, relatively large weighted ball designed for throwing against a wall and catching. Wall balls are generally softer and larger than balls used for fast throws.
Rehabilitation: Treatment that restores function, mobility, or independence after injury or illness. Light ball exercises can add graded resistance to therapeutic movement.
Kinetic chain: A linked sequence of body segments that coordinates movement and force transfer. Effective throws coordinate force from the legs through the trunk to the arms.

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DumbbellCompared with: Its rounded form supports ballistic throws that a hand-held dumbbell does not.