Vigorous Muscle Essay

Vigorous and unfamiliar exercise, particularly which involves eccentric muscle actions can cause muscle damage and lead to delayed-onset muscle soreness (DOMS), which may impair performance. This is due to the high force features of eccentric contraction (Starbuck & Eston, 2011). It can also cause muscle shortening, swelling and loss of strength in the muscles. Injuries commonly occur during eccentric loading of the muscle; that is, when the muscle is contracting while it is lengthening. (LaStayo, et al., 2003)
DOMS arises between 24 to 48 hours after eccentric exercise has taken place and can last up to 7 days after the exercise (Twist & Eston, 2009). DOMS reflects the muscle damage that occurs during physiological change when a performer is building larger and stronger muscles. Many people who have performed a large amount of eccentric exercise and are not used to the movement and contractions associated with it can also experience DOMS.
Eccentric resistance training is one way to increase strength; however, die associated DOMS may impair strength. (Nguyen & Brown, 2009). There are few studies which examine the physical relationship between DOMS and physical attributes. Likewise, few studies have observed changes in the joint
It should be noted that the elbow flexors generate maximal isometric strength around the elbow joint angle of 90° (Nosaka & Newton, 2002) each eccentric action, subjects were asked to lower the dumbbell from an elbow flexed to an elbow extended position. After completing each eccentric action, the examiner removed the dumbbell at the elbow extended position, and the subject returned the arm to the flexed position without load. Each performer performed 30 eccentric actions. For the subsequent 11 days each day the performer would perform the repetitions