Eccentric

Eccentric refers to a type of muscle contraction that occurs when the muscle lengthens as it maintains tension. This is often associated with movements that involve controlling the speed and direction of the body's movement, such as lowering a weight during a bicep curl.

Physiology of Eccentric Contractions

During an eccentric contraction, the muscle elongates while under tension due to an opposing force which is greater than the force generated by the muscle. Rather than working to pull a joint in the direction of the muscle contraction, the muscle acts to decelerate the joint at the end of a movement or otherwise control the repositioning of the body part.

Comparison with Other Types of Muscle Contractions

Eccentric contractions differ from concentric contractions, in which the muscle shortens while producing force and isometric contractions, in which the muscle length does not change while tension is produced.

Role in Exercise and Training

Eccentric contractions are commonly integrated into resistance training programs. They can be used to increase strength, improve flexibility, and enhance muscle growth. Eccentric training can also be beneficial in the rehabilitation of tendon injuries.

Potential Risks and Considerations

While eccentric contractions can be beneficial, they can also cause muscle damage if not performed correctly. This can lead to muscle soreness and reduced muscle function. Therefore, it is important to use proper form and technique when performing exercises that involve eccentric contractions.

See Also

• Muscle Contraction
• Concentric Contraction
• Isometric Contraction
• Resistance Training
• Tendon Injuries

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