Final answer:
During isokinetic (resistive) exercises, a person works their muscles against a consistent and controlled form of resistance to improve muscle strength and induce hypertrophy.
Step-by-step explanation:
During isokinetic (resistive) exercises, a person works their muscles against resistance.
Isokinetic exercises are a type of anaerobic exercise where the muscles exert force through a specific range of motion at a consistent speed against resistance. This form of exercise involves the repetitive contraction and expansion of muscle groups against weight or another force that does not change. The resistance can come from various sources, such as weights, machines, or even the body's own weight. The goal is to challenge the muscles, which leads to muscle hypertrophy, or the enlargement of muscles, due to the increase of myofibrils and thus, the thickness of the muscle fibers.
Examples can include weight lifting, where skeletal muscles contract against weighted resistance, or specific machines designed for isokinetic workouts. Regular engagement in these types of exercises helps in maintaining and increasing both muscle size and strength, following the principle of 'use it or lose it'.