Creatine Supplementation

The improvement in more of the repeated bouts of

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Unformatted text preview: e repeated bouts of exercise for the Cr group was attributed to the fact that each exercise bout began with higher concentrations of PCr compared with the placebo group. However, the inappropriate use of paired t-tests without any adjustment in the p-values or the inability to evaluate any possible interaction terms makes direct comparisons between the two groups impossible. An 8-week resistance training programme, coupled with electrical muscle stimulation (EMS) applied to isokinetic force production at 70 degrees/ second, was designed by Stevenson and Dudley[36] in conjunction with or without Cr supplementation. Eighteen previously resistance-trained subjects were randomly assigned to a Cr group or placebo group. Cr loading consisted of 20 g/day for 7 days, then reverted to a maintenance dose of 5 g/day for 8 weeks. EMS, which elicited maximal coupled eccentric and concentric actions, was applied to the Sports Med 2005; 35 (2) The Effects of Creatine in Sport and Exercise left quadricep fermoris twice weekly (three to five sets) while subjects continued with their own individual lower-body workouts. Measures of muscle CSA were obtained by way of magnetic resonance imaging (MRI). Repeated measures ANOVA analyses revealed that the addition of electrical stimulation to the left quadricep increased CSA by 11%, independent of Cr supplementation, probably due to increased intracellular water.[36] Since both groups exhibited similar improvements in force production, fatigue resistance and muscle hypertrophy, the authors concluded that Cr supplementation does not augment mechanical or hypertrophic responses of trained individuals.[36] Another study that was unable to detect the efficacy of Cr supplementation for isokinetic force parameters was conducted by Gilliam et al.[37] They examined the acute effects of Cr supplementation on isokinetic peak torque at 180 degrees/second in 23 active but untrained men. Subjects were randomly assigned to either a Cr group (n = 11) or a placebo group (n = 12). Treatment consisted of four dos...
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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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