Resistance training

Resistance training is exercise in which muscles work against an external load. It can improve muscular strength, size, and endurance.

Mechanical tension: Force exerted on muscle fibers as they contract or resist being stretched. It is a central stimulus through which resistance exercise promotes muscle growth.
Repetition: One complete performance of an exercise movement. Repetitions are the basic units used to describe the work in a resistance set.
Weightlifting: The sport of lifting a barbell in the snatch and clean and jerk. It is a competitive form of resistance training centered on explosive strength.
Aerobic exercise: Sustained physical activity that relies substantially on aerobic energy production. It primarily trains cardiorespiratory endurance, unlike resistance training’s emphasis on muscular loading.
Bone remodeling: The continual replacement and reshaping of bone tissue by specialized cells. Repeated mechanical loading can stimulate bone adaptation alongside muscular changes.
Progressive overload: The gradual increase of training demands over time to sustain adaptation. Increasing load, repetitions, or difficulty helps keep a program challenging as capacity improves.
Set (exercise): A group of consecutive repetitions of an exercise, usually followed by rest. Sets organize repeated efforts and help determine a session’s training volume.
Powerlifting: A strength sport in which competitors perform the squat, bench press, and deadlift. Its three competition lifts are trained with resistance to maximize maximal strength.
Isometric exercise: Muscle contraction that produces force without appreciable change in muscle length or joint angle. It can provide resistance without the repeated joint movement common in dynamic training.
Sarcopenia: The progressive loss of skeletal muscle mass and function associated with aging and disease. Resistance training can help counter age-related declines in muscle strength and function.

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