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Soreness can theoretically be avoided by limiting exercise to concentric and isometric contractions, [11]: 112 but eccentric contractions in some muscles are normally unavoidable during exercise, especially when muscles are fatigued.
Perceived muscle damage: There is a stipulation regarding eccentric contractions in that they actually cause muscle damage and injury. Eccentric contraction may result in delayed onset muscle soreness however; the contraction itself does not cause muscle damage or injury.
What is muscle soreness? Muscle soreness is pain, discomfort, tenderness, and/or stiffness caused by micro-tears to muscle fibers, explains Carson Gantzer, M.S., C.S.C.S., performance physiologist ...
The resultant ischemia leads to necrosis (death of tissue) of the muscles and nerves. The process can begin with swelling of the tibialis anterior, extensor hallucis longus, extensor digitorum longus, and/or the peroneus tertius muscles in response to strong eccentric contractions sufficient to produce postexercise soreness. [citation needed]
Delayed onset muscle soreness is pain or discomfort that may be felt one to three days after exercising and generally subsides two to three days later. Once thought to be caused by lactic acid build-up, a more recent theory is that it is caused by tiny tears in the muscle fibers caused by eccentric contraction, or unaccustomed training levels ...
There are two types of isotonic contractions: (1) concentric and (2) eccentric. In a concentric contraction, the muscle tension rises to meet the resistance, then remains the same as the muscle shortens. In eccentric, the muscle lengthens due to the resistance being greater than the force the muscle is producing. [citation needed]
Muscle soreness may refer to: Acute muscle soreness (AMS), which appears during or immediately after exercise and lasts up to 24 hours.
Exercise featuring a heavy eccentric load can actually support a greater weight (muscles are approximately 40% stronger during eccentric contractions than during concentric contractions) and also results in greater muscular damage and delayed onset muscle soreness one to two days after training. Exercise that incorporates both eccentric and ...
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