isometric

isometric /iso·met·ric/ (-met´rik) maintaining, or pertaining to, the same measure of length; of equal dimensions.

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i·so·met·ric (s-mtrk)

adj.

1. Of or exhibiting equality in dimensions or measurements.

2. Of, relating to, or being a crystal system of three equal axes lying at right angles to each other.

3. Of or involving muscular contraction against resistance in which the length of the muscle remains the same.

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isometric

[ī′səmet′rik]

Etymology: Gk, isos + metron, measure

maintaining the same length or dimension.

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isometric [i″so-met´rik]

maintaining, or pertaining to, the same length; of equal dimensions.

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isometric (īˈ·sō·meˑ·trik),

n muscle contraction that does not involve any change in the muscle length.

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isometric

maintaining, or pertaining to, the same length; of equal dimensions.

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isometric contraction

muscle contraction without appreciable shortening or change in distance between its origin and insertion.

isometric exercise

active exercise performed against stable resistance, without change in the length of the muscle.

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exercise

Public health The rhythmic contraction of muscles against a force Pros ↓ risk of cholecystectomy, ↓ risk of CAD, CHD, CA–colorectal, breast, prostate, DM–improved insulin utilization, obesity, stroke, osteoporosis, stress, anxiety; ↑ sexual pleasure, strength, flexibility, stamina, psychological well-being, general health; improved reaction time, memory, moods, immune resistance, sleep, self-confidence, control of arthritis, weight, quality of life. See Aerobic exercise, Anaerobic exercise, Breathing exercise, Cardiovascular exercise, Codman's pendulum exercise, Hoshino exercise, Isometric exercise, Isotonic exercise, Pritikin exercise, Vigorous exercise.

Exercise

Muscle

• Isometric Exercise against an unmoving resistance; isometric exercises consist of muscle contraction with a minimum of other body movements; isometric exercises build muscle strength and include weight-lifting or squeezing a tennis ball

• Isotonic Dynamic exercise Isotonic exercise consists of continuous and sustained movement of the arms and legs; isotonic exercises are beneficial to the cardiorespiratory systems and include running and bicycling

Whole body

• Low-impact aerobics Any type of aerobic exercise that promotes physical fitness, but does not stress musculoskeletal tissues, and joints; low-impact aerobic exercises include walking, swimming, bicycling

• High-impact aerobics Any type of aerobic exercise that promotes physical fitness, at the risk of stress to musculoskeletal tissues, and joints; high-impact aerobic exercises include aerobic dancing, basketball, running, volleyball

Exercise-kcal consumed/hour

Distance running (15 km/hour)  1000

Contact sports (wrestling, karate)   900

Bicycling (25 km/hour)   800

Swimming, freestyle   800

Basketball, volleyball  700

Jogging (9 km/hour)  600

Tennis   500

Coitus   450

Walking  400