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Related to isokinetic exercise: isotonic exercise
i·so·ki·net·ic exercise(ī′sō-kə-nĕt′ĭk, -kī-)
Exercise performed with a specialized apparatus that provides variable resistance to a movement, so that no matter how much effort is exerted, the movement takes place at a constant speed. Such exercise is used to test and improve muscular strength and endurance, especially after injury.