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Effects of a supplement designed to increase ATP levels on muscle strength, power output, and endurance

BACKGROUND: The present study examined the acute effects of a nutritional supplement intended to improve adenosine triphosphate (ATP) concentrations on vertical jump height, isometric strength of the leg extensors, leg extension endurance, and forearm flexion endurance. METHODS: Twenty-four healthy...

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Autores principales: Herda, Trent J, Ryan, Eric D, Stout, Jeffrey R, Cramer, Joel T
Formato: Texto
Lenguaje:English
Publicado: BioMed Central 2008
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2253504/
https://www.ncbi.nlm.nih.gov/pubmed/18230170
http://dx.doi.org/10.1186/1550-2783-5-3
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author Herda, Trent J
Ryan, Eric D
Stout, Jeffrey R
Cramer, Joel T
author_facet Herda, Trent J
Ryan, Eric D
Stout, Jeffrey R
Cramer, Joel T
author_sort Herda, Trent J
collection PubMed
description BACKGROUND: The present study examined the acute effects of a nutritional supplement intended to improve adenosine triphosphate (ATP) concentrations on vertical jump height, isometric strength of the leg extensors, leg extension endurance, and forearm flexion endurance. METHODS: Twenty-four healthy men (mean age ± SD = 23 ± 4 yrs, stature = 181 ± 7 cm, and body mass = 82 ± 12 kg) volunteered to complete a familiarization trial plus 2 randomly-ordered experimental trials separated by a 7-day washout period. Participants received either 6 (body mass < 91 kg) or 8 (body mass ≥ 91 kg) tablets of the treatment (TR; 625 mg of adenylpyrophosphoric acid and calcium pyruvate, 350.8 mg of cordyceps sinensis extract and yohimbine hydrochloride) or placebo (PL; 980 mg of microcrystalline cellulose) 1 hour prior to the following tests: countermovement vertical jump (CVJ), forearm flexion repetitions to exhaustion, isometric maximal voluntary contractions (MVCs) of the leg extensors, and a 50-repetition maximal concentric isokinetic leg extension endurance test. RESULTS: There were no differences between the TR and PL trials for CVJ height (P > 0.05), isometric MVC peak torque (P > 0.05), maximal concentric isokinetic peak torque (P > 0.05), percent decline during the leg extension endurance tests (P > 0.05), or repetitions to exhaustion during the forearm flexion endurance tests (P > 0.05). CONCLUSION: These findings indicated no improvements in the measured variables as a result of ingesting this nutritional supplement. Future studies should examine whether chronic supplementation or a loading period is necessary to observe any ergogenic effects of this supplement.
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spelling pubmed-22535042008-02-25 Effects of a supplement designed to increase ATP levels on muscle strength, power output, and endurance Herda, Trent J Ryan, Eric D Stout, Jeffrey R Cramer, Joel T J Int Soc Sports Nutr Research Article BACKGROUND: The present study examined the acute effects of a nutritional supplement intended to improve adenosine triphosphate (ATP) concentrations on vertical jump height, isometric strength of the leg extensors, leg extension endurance, and forearm flexion endurance. METHODS: Twenty-four healthy men (mean age ± SD = 23 ± 4 yrs, stature = 181 ± 7 cm, and body mass = 82 ± 12 kg) volunteered to complete a familiarization trial plus 2 randomly-ordered experimental trials separated by a 7-day washout period. Participants received either 6 (body mass < 91 kg) or 8 (body mass ≥ 91 kg) tablets of the treatment (TR; 625 mg of adenylpyrophosphoric acid and calcium pyruvate, 350.8 mg of cordyceps sinensis extract and yohimbine hydrochloride) or placebo (PL; 980 mg of microcrystalline cellulose) 1 hour prior to the following tests: countermovement vertical jump (CVJ), forearm flexion repetitions to exhaustion, isometric maximal voluntary contractions (MVCs) of the leg extensors, and a 50-repetition maximal concentric isokinetic leg extension endurance test. RESULTS: There were no differences between the TR and PL trials for CVJ height (P > 0.05), isometric MVC peak torque (P > 0.05), maximal concentric isokinetic peak torque (P > 0.05), percent decline during the leg extension endurance tests (P > 0.05), or repetitions to exhaustion during the forearm flexion endurance tests (P > 0.05). CONCLUSION: These findings indicated no improvements in the measured variables as a result of ingesting this nutritional supplement. Future studies should examine whether chronic supplementation or a loading period is necessary to observe any ergogenic effects of this supplement. BioMed Central 2008-01-29 /pmc/articles/PMC2253504/ /pubmed/18230170 http://dx.doi.org/10.1186/1550-2783-5-3 Text en Copyright © 2008 Herda et al; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( (http://creativecommons.org/licenses/by/2.0) ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Herda, Trent J
Ryan, Eric D
Stout, Jeffrey R
Cramer, Joel T
Effects of a supplement designed to increase ATP levels on muscle strength, power output, and endurance
title Effects of a supplement designed to increase ATP levels on muscle strength, power output, and endurance
title_full Effects of a supplement designed to increase ATP levels on muscle strength, power output, and endurance
title_fullStr Effects of a supplement designed to increase ATP levels on muscle strength, power output, and endurance
title_full_unstemmed Effects of a supplement designed to increase ATP levels on muscle strength, power output, and endurance
title_short Effects of a supplement designed to increase ATP levels on muscle strength, power output, and endurance
title_sort effects of a supplement designed to increase atp levels on muscle strength, power output, and endurance
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2253504/
https://www.ncbi.nlm.nih.gov/pubmed/18230170
http://dx.doi.org/10.1186/1550-2783-5-3
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