Creatine Supplementation

Results indicated that after cr ingestion power

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Unformatted text preview: esults indicated that after Cr ingestion, power output significantly increased by 5% from exercise bouts three to seven and total PCr resynthesis was also significantly increased following 10 minutes of recovery. There was also a strong positive relationship between inorganic phosphate concentration and muscle pH after Cr ingestion. It appeared that Cr ingestion helped maintain power output over repeated bouts of intermittent anaerobic activity by reducing acidic conditions. Sports Med 2005; 35 (2) The Effects of Creatine in Sport and Exercise In a similar protocol, Cottrell et al.[55] studied the effect of Cr ingestion and recovery interval on multiple bouts of sprint cycling performance in adult males. Well trained cyclists were randomised to either a Cr group (0.3 g/kg BW/day for 6 days) or a placebo group. Three separate trials of maximal cycling sprints were used. Cycling bouts consisted of eight, 15-second, maximal efforts. Subjects were randomly assigned to recovery interval groups of 1, 3 or 6 minutes, and the same protocol was carried out again, 7 days later. The use of paired t-tests indicated that between-trial mean power significantly increased for the Cr groups with 1 and 3 minutes of recovery, and for the placebo group with 6 minutes of recovery. It appeared that during this study, Cr supplementation had a positive effect on mean power maintenance as long as the rest interval was no longer than 6 minutes, but the lack of assessing an interaction term following supplementation, should lead one to closely scrutinise the interpretation of these results. Contrary to the previous studies, Edwards et al.[58] examined the effects of Cr supplementation on anaerobic performance in moderately active men. Twenty-one subjects were randomly assigned to either a Cr group (n = 11; 20 g/day for 6 days) or a placebo group (n = 10). Subjects were tested using an anaerobic speed test (AST), which required them to run to fatigue on a treadmill at a constant speed of 13 km/h and 20% gradient. Pri...
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This note was uploaded on 01/28/2014 for the course BI 231 taught by Professor Richardmay during the Fall '13 term at Southern Oregon.

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