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- W2317381432 abstract "PURPOSE: We tested the hypotheses that a 5-day creatine loading intervention would result in no alteration in the power asymptote (the critical power, CP), but would significantly increase the curvature constant (W¢; analogous to the total amount of work done above CP) using a novel all-out cycling test protocol to establish the parameters of the power-duration relationship. METHODS: Following institutional ethical approval, seven healthy males completed 3-min all-out critical power tests against fixed resistance on an electrically braked cycle ergometer after a 5-day dietary supplementation with 20 g per day of creatine monohydrate (CR) or the same dose of a glucose placebo (PL). The CP was estimated from the mean power output sustained over the final 30 s of the test and the W¢ was estimated as the power-time integral above the end-test power output. Differences between conditions were assessed by paired samples t-tests and statistical significance was accepted at P < 0.05 level. RESULTS: Creatine supplementation resulted in a significant increase in body mass (from 80.4 ± 9.2 kg at baseline to 81.5 ± 9.5 kg; P < 0.05), whereas the body mass was not different after the placebo supplementation (80.3 ± 9.3 kg; P = 0.74). There were no differences in the power profiles of the 3-min all-out tests following PL and CR supplementation (CP; PL: 252 ± 30 vs. CR: 255 ± 28 W, P = 0.14; W¢; PL: 19.4 ± 3.5 vs. CR: 19.2 ± 3.4 kJ, P = 0.77; total work done; PL: 64.8 ± 4.9 vs. CR: 65.0 ± 4.9 kJ, P = 0.49). CONCLUSIONS: In contrast to earlier studies which established the parameters of the power-duration relationship using the conventional prediction trial protocol, the present study indicates that creatine loading does not alter either the CP or the W¢ as assessed using the novel 3-min all-out test and has no ergogenic effect on power output during prolonged all-out cycling." @default.
- W2317381432 created "2016-06-24" @default.
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- W2317381432 date "2009-05-01" @default.
- W2317381432 modified "2023-09-25" @default.
- W2317381432 title "Influence Of Creatine Supplementation On The Parameters Of The All-out Critical Power Test" @default.
- W2317381432 doi "https://doi.org/10.1249/01.mss.0000355071.99580.17" @default.
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