Strength training

Strength training is exercise that makes muscles work against external or bodyweight resistance to improve strength, power, or muscular endurance.

Progressive overload: A training principle that gradually increases demands on the body to stimulate continued adaptation. Increasing load, repetitions, or difficulty over time helps sustain strength gains.
Muscular strength: The capacity of muscles to exert force against resistance. It is the primary physical capacity targeted by strength training.
Weightlifting: A sport in which competitors lift a barbell in the snatch and clean and jerk. Its competition lifts are also used to develop strength and power.
Aerobic exercise: Sustained physical activity that relies primarily on aerobic energy production. It emphasizes cardiorespiratory endurance rather than force against resistance.
Bone density: The amount of mineral matter in bone relative to its volume. Weight-bearing resistance exercise can provide loading that supports bone health.
Muscle hypertrophy: An increase in the size of muscle fibers, usually resulting from repeated training and recovery. Resistance training can enlarge muscles alongside improving their force capacity.
Muscular endurance: The ability of muscles to sustain or repeat contractions over time. Training with lighter loads and more repetitions can emphasize this capacity.
Bodyweight exercise: Exercise that uses a person's body mass as resistance. Push-ups, squats, and related movements allow resistance training without weights.
Isometric exercise: Muscle contraction that produces force without appreciable change in muscle length or joint angle. It trains force without the repeated joint movement typical of many lifting exercises.
Sarcopenia: The progressive loss of skeletal muscle mass and function associated with aging and other factors. Strength training can help counter declines in muscle strength and function.

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