Muscular Strength and Endurance

A collection of flashcards designed to enhance understanding of key concepts related to muscular strength and endurance.

Muscular Fitness

The ability of a muscle or group of muscles to perform repeated contractions over time.

Hypertrophy

The increase in the size of muscle fibers due to resistance training.

Atrophy

The decrease in muscle mass and strength due to disuse or inactivity.

Motor Unit

A motor neuron and the skeletal muscle fibers it innervates, working together to create muscle contraction.

Sarcopenia

The loss of muscle mass and strength associated with aging.

Isotonic

A type of muscle contraction that occurs with a consistent load where the muscle changes length.

Eccentric Contraction

A type of muscle contraction where the muscle lengthens while under tension.

Concentric Contraction

A type of muscle contraction where the muscle shortens while generating force.

Isometric

A type of muscle contraction where muscle length does not change despite tension.

FITT-VP Principle

A guideline for creating an effective exercise program based on Frequency, Intensity, Time, Type, Volume, and Progression.

Resistance Training

Exercise designed to improve strength and endurance by working against a force.

Slow-twitch Muscle Fibers

Muscle fibers that contract slowly and are more resistant to fatigue, used primarily for endurance activities.

Fast-twitch Muscle Fibers

Muscle fibers that contract quickly and powerfully but fatigue faster, used for short bursts of strength.

1 RM (Repetition Maximum)

The maximum weight that can be lifted once with proper form.

Grip Strength Test

A common test used to assess muscular strength using a grip strength dynamometer.

Bodyweight Exercise

Conditioning exercises using the weight of the body as resistance.

Bone Mineral Density

The amount of bone mineral in bone tissue, used as an indicator of bone health.

Overtraining

Excessive training without sufficient rest, leading to decreased performance and increased risk of injury.

Neuromuscular Coordination

The ability to control and coordinate muscle activity.

Muscle Fiber

A single muscle cell, also known as a myocyte.

Myofibril

Protein structures within muscle fibers that are responsible for muscle contraction.

Myofilaments

The threadlike structures within a myofibril made up of actin and myosin.