Definition

Noun 1. A system of physical exercises: Isometrics refers to a type of strength training where muscles are contracted against an immovable resistance or held in a static position. The key characteristic is that the muscle tenses but does not change in length, and the involved joints do not move. 2. The exercises themselves: Individual exercises performed using this static contraction method.

Usage

• Isometrics are often used for rehabilitation, as they can build strength with minimal joint stress.
• Because they require no equipment, isometrics can be performed anywhere.
• A common example of isometrics is pushing against a solid wall.

Examples

• Noun (System):
  • The physical therapist recommended isometrics to strengthen his knee without straining it.
  • She incorporated isometrics into her daily routine for core stability.
• Noun (Exercises):
  • Planks and wall sits are classic isometrics.
  • He held the isometrics for 30 seconds each.

Advanced Usage

• "Isometric contraction": The technical term for the type of muscle action used in isometrics, where tension develops but the muscle length remains constant.
  • During an isometric contraction, the muscle fibers are active but the joint angle does not change.

Variants and Related Words

• Isometric (Adjective): Describing something related to or involving equal measure or, in physiology, muscle contraction without movement.
  • He maintained an isometric hold for one minute.
• Isometric exercise (Noun Phrase): A synonym for an individual isometrics exercise.
  • A static lunge is an effective isometric exercise for the legs.

Synonyms

• Static exercise
• Static strength training

Related Concepts (Not Synonyms)

• Isotonic exercise: Exercise involving muscle contraction with movement (e.g., bicep curls, squats), where the muscle changes length.
• Plyometrics: Exercise involving rapid, powerful movements like jumping, which uses the stretch-shortening cycle of muscles.

Noun

1. muscle-building exercises (or a system of musclebuilding exercises) involving muscular contractions against resistance without movement (the muscles contracts but the length of the muscle does not change)