Effects of Short-Term Creatine Monohydrate Supplementation on High Intensity, Anaerobic Exercise Performance

2006 ◽  
Vol 38 (Supplement) ◽  
pp. S406
Author(s):  
John W. Womack ◽  
Adam G. Parker ◽  
Benjamin J. Head ◽  
John S. Green ◽  
Stephen F. Crouse
1998 ◽  
Vol 30 (Supplement) ◽  
pp. 265
Author(s):  
W. Y. Ensign ◽  
I. Jacobs ◽  
W. K. Prusaczyk ◽  
H. W. Goforth ◽  
P. G. Law ◽  
...  

2013 ◽  
Vol 23 (6) ◽  
pp. 554-561 ◽  
Author(s):  
Kagan J. Ducker ◽  
Brian Dawson ◽  
Karen E. Wallman

Beta-alanine supplementation has been shown to improve exercise performance in short-term, high-intensity efforts.Purpose:The aim of this study was to assess if beta-alanine supplementation could improve 800 m track running performance in male recreational club runners (n = 18).Methods:Participants completed duplicate trials (2 presupplementation, 2 postsupplementation) of an 800 m race, separated by 28 days of either beta-alanine (n = 9; 80 mg·kg−1BM·day−1) or placebo (n = 9) supplementation.Results:Using ANCOVA (presupplementation times as covariate), postsupplementation race times were significantly faster following beta-alanine (p = .02), with post- versus presupplementation race times being faster after beta-alanine (–3.64 ± 2.70 s, –2.46 ± 1.80%) but not placebo (–0.59 ± 2.54 s, –0.37 ± 1.62%). These improvements were supported by a moderate effect size (d = 0.70) and a very likely (99%) benefit in the beta-alanine group after supplementation. Split times (ANCOVA) at 400 m were significantly faster (p = .02) postsupplementation in the beta-alanine group, compared with placebo. This was supported by large effect sizes (d = 1.05–1.19) and a very likely (99%) benefit at the 400 and 800 m splits when comparing pre- to postsupplementation with beta-alanine. In addition, the first and second halves of the race were faster post- compared with presupplementation following beta-alanine (1st half –1.22 ± 1.81 s, likely 78% chance of benefit; 2nd half –2.38 ± 2.31 s, d = 0.83, very likely 98% chance of benefit). No significant differences between groups or pre- and postsupplementation were observed for postrace blood lactate and pH.Conclusion:Overall, 28 days of beta-alanine supplementation (80 mg·kg-1BM·day-1) improved 800 m track performance in recreational club runners.


2007 ◽  
Vol 39 (Supplement) ◽  
pp. S307
Author(s):  
Ali M. Al nawaiseh ◽  
Phillip A. Bishop ◽  
Robert C. Pritchett ◽  
Sonja Porter

2016 ◽  
Vol 30 (2) ◽  
pp. 320-325 ◽  
Author(s):  
Ali M. Al-Nawaiseh ◽  
Robert C. Pritchett ◽  
Philip A. Bishop

2018 ◽  
Vol 37 (9) ◽  
pp. 998-1003 ◽  
Author(s):  
Christopher G. Ballmann ◽  
Shelby B. Maze ◽  
Abby C. Wells ◽  
Mallory R. Marshall ◽  
Rebecca R. Rogers

2006 ◽  
Vol 27 (8) ◽  
pp. 629-635 ◽  
Author(s):  
M. Burtscher ◽  
M. Faulhaber ◽  
M. Flatz ◽  
R. Likar ◽  
W. Nachbauer

Nutrients ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 688
Author(s):  
Mirjam Limmer ◽  
Juliane Sonntag ◽  
Markus de Marées ◽  
Petra Platen

Pre-alkalization caused by dietary supplements such as sodium bicarbonate improves anaerobic exercise performance. However, the influence of a base-forming nutrition on anaerobic performance in hypoxia remains unknown. Herein, we investigated the effects of an alkalizing or acidizing diet on high-intensity performance and associated metabolic parameters in normoxia and hypoxia. In a randomized crossover design, 15 participants (24.5 ± 3.9 years old) performed two trials following four days of either an alkalizing (BASE) or an acidizing (ACID) diet in normoxia. Subsequently, participants performed two trials (BASE; ACID) after 12 h of normobaric hypoxic exposure. Anaerobic exercise performance was assessed using the portable tethered sprint running (PTSR) test. PTSR assessed overall peak force, mean force, and fatigue index. Blood lactate levels, blood gas parameters, heart rate, and rate of perceived exertion were assessed post-PTSR. Urinary pH was analyzed daily. There were no differences between BASE and ACID conditions for any of the PTSR-related parameters. However, urinary pH, blood pH, blood bicarbonate concentration, and base excess were significantly higher in BASE compared with ACID (p < 0.001). These findings show a diet-induced increase in blood buffer capacity, represented by blood bicarbonate concentration and base excess. However, diet-induced metabolic changes did not improve PTSR-related anaerobic performance.


2011 ◽  
Vol 36 (3) ◽  
pp. 344-352 ◽  
Author(s):  
Melitta A. McNarry ◽  
Joanne R. Welsman ◽  
Andrew M. Jones

A maturational threshold has been suggested to be present in young peoples’ responses to exercise, with significant influences of training status evidenced only above this threshold. The presence of such a threshold has not been investigated for short-term, high-intensity exercise. To address this, we investigated the relationship between swim-training status and maturity on the power output, pulmonary gas exchange, and metabolic responses to an upper- and lower-body Wingate anaerobic test (WAnT). Girls at 3 stages of maturity participated:, prepubertal (Pre: 8 trained (T), 10 untrained (UT)), pubertal (Pub: 9 T, 15 UT), and postpubertal (Post: 8 T, 10 UT). At all maturity stages, T exhibited higher peak power (PP) and mean power (MP) during upper-body exercise (PP: Pre, T, 163 ± 20 vs. UT, 124 ± 29; Pub, T, 230 ± 42 vs. UT, 173 ± 41; Post, T, 245 ± 41 vs. UT, 190 ± 40 W; MP: Pre, T, 130 ± 23 vs. UT, 85 ± 26; Pub, T, 184 ± 37 vs. UT, 123 ± 38; Post, T, 200 ± 30 vs. UT, 150 ± 15 W; all p < 0.05) but not lower-body exercise, whilst the fatigue index was significantly lower in T for both exercise modalities. Irrespective of maturity, the oxidative contribution, calculated by the area under the oxygen uptake response profile, was not influenced by training status. No interaction was evident between training status and maturity, with similar magnitudes of difference between T and UT at all 3 maturity stages. These results suggest that there is no maturational threshold which must be surpassed for significant influences of training status to be manifest in the “anaerobic” exercise performance of young girls.


Sign in / Sign up

Export Citation Format

Share Document