Lesson 4- Muscular Strength

Lesson 4 Muscular - Improving Muscular Strength Endurance and Power Lifetime Fitness Lesson 4 Chapter 5 I Why is muscular strength important for

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Improving Muscular Strength, Endurance and Power Lifetime Fitness Lesson 4, Chapter 5 I. Why is muscular strength important for everyone? Essential component of fitness Important for healthy living (gait, posture, function) Important in fitness programs, injury prevention, and rehabilitation II. How are strength and muscular endurance related? Muscular endurance - ability to perform repetitive muscular contractions against some resistance over time. As endurance increases strength gain also occurs. III. Type of Skeletal Muscle Contraction Isometric – contraction that produces tension but not result in change of muscle length Concentric - muscle shortening occurs while tension is developed to overcome a resistance Eccentric - muscle contraction that involves a lengthening of the muscle IV. Fast-twitch vs. Slow-twitch Fibers Fast-Twitch - anaerobic, found in muscles that produce powerful explosive movements Slow-Twitch –aerobic, generally found in muscles used for posture V. What determines how much strength you have?
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This note was uploaded on 04/17/2008 for the course PHYA 113 taught by Professor Marsh during the Spring '08 term at UNC.

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Lesson 4 Muscular - Improving Muscular Strength Endurance and Power Lifetime Fitness Lesson 4 Chapter 5 I Why is muscular strength important for

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