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|Hong Kong Polytechnic University
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|The effectiveness of warm-up, cool-down and the combination of warm-up and cool-down on the alleviation of delayed onset muscular soreness (DOMS)
|Various treatment modalities and exercises have been used in an attempt to prevent or alleviate the delayed onset muscular soreness (DOMS). Being an effective means for preventing the incidence of injury, warm-up and cool-down exercises are also widely recommended in the sports field for the prevention and alleviation of DOMS. However, few studies were performed to investigate the effectiveness of warm-up and cool-down on DOMS though they are so popularly applied. This study was therefore undertaken to investigate the therapeutic value of warm-up, cool-down and the combination of warm-up and cool-down on the alleviation of DOMS. 60 normal, male subjects with age ranged from 21-27 were randomly allocated into four experimental groups (a) warm-up group, (b) cool-down group, (c) combination of warm-up and cool-down group and (d) control group. Subjects in different experimental groups were required to perform the assigned exercise program (i.e. warm-up, cool-down or rest) and the DOMS-producing eccentric exercise. Subjective measurement of soreness score and objective measurement of peak torque generated were assessed throughout the course of DOMS from Day 1 to 7 postexercise. Results of study indicated that the assigned eccentric exercise was effective in producing DOMS for all groups at about 24 to 48 hours postexercise. Statistical analysis by repeated measure analysis of variance revealed the significant difference for both soreness score and percentage change of peak torque amongst the various exercise groups, experimental days and the interaction of exercise groups with experimental days (p = 0.000, which < 0.05). Average soreness score and percentage loss of peak torque were greatest in control group. While, the warm-up exercise was found to be effective in controlling the muscle soreness and loss of muscle performance at 48 hours postexercise. The effects of cool-down and the combination of warm-up and cool-down were even found to be superior to that of the warm-up and control groups. Lower level and earlier recovery of soreness score and peak torque to baseline level were showed in both cool-down and combination groups. Early start of recovery for the soreness and muscle performance was also noted in the cool-down exercise group. Subjects in cool-down exercise group started to recover at about 24 hours postexercise. While, subjects in the other experimental groups started to recover at about 48 hours postexercise. The outstanding effects of cool down on the prevention and alleviation of DOMS had been demonstrated in this study. Emphasis on the recruitment of cool-down exercise in the training or rehabilitative program would therefore be recommended to therapists, coaches, physical educators and the athletes.
|xii, 66 leaves : ill. ; 0 cm
|PolyU Electronic Theses
|Hong Kong Polytechnic University -- Dissertations
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