| Effects of phosphate loading on metabolic and myocardial responses to maximal and endurance exercise. | |
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MedLine Citation:
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PMID: 1299483 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Six trained male cyclists and triathletes participated in a double blind study to determine the effects of phosphate loading on maximal and endurance exercise performance. Subjects ingested either 1 gm of tribasic sodium phosphate or a glucose placebo four times daily for 3 days prior to performing either an incremental maximal cycling test or a simulated 40-km time trial on a computerized race simulator. They continued the supplementation protocol for an additional day and then performed the remaining maximal or performance exercise test. Subjects observed a 17-day washout period between testing sessions and repeated the experiment with the alternate supplement regimen in identical fashion. Metabolic data were collected at 15-sec intervals while venous blood samples and 2D-echocardiographic data were collected during each stage of exercise during the maximal exercise test and at 8-km intervals during the 40-km time trial. Results indicate that phosphate loading attenuated anaerobic threshold, increased myocardial ejection fraction and fractional shortening, increased maximal oxidative capacity, and enhanced endurance performance in competitive cyclists and triathletes. |
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Authors:
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R B Kreider; G W Miller; D Schenck; C W Cortes; V Miriel; C T Somma; P Rowland; C Turner; D Hill |
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Publication Detail:
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Type: Clinical Trial; Controlled Clinical Trial; Journal Article |
Journal Detail:
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Title: International journal of sport nutrition Volume: 2 ISSN: 1050-1606 ISO Abbreviation: Int J Sport Nutr Publication Date: 1992 Mar |
Date Detail:
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Created Date: 1993-05-20 Completed Date: 1993-05-20 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9307702 Medline TA: Int J Sport Nutr Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 20-47 Citation Subset: IM |
Affiliation:
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Dept. of HPER, Old Dominion University, Norfolk, VA 23529-0196. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Bicycling Double-Blind Method Echocardiography Exercise / physiology* Heart / drug effects, physiology* Hematocrit Hemodynamics Hemoglobins / metabolism Humans Male Metabolism / drug effects* Oxygen Consumption Phosphates / administration & dosage*, blood, pharmacology Physical Endurance / physiology* Placebos Random Allocation |
| Chemical | |
Reg. No./Substance:
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0/Hemoglobins; 0/Phosphates; 0/Placebos |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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