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2008 | 19 | 149-164

Article title

The Influence of Sodium Phosphate Supplementation on VO2max, Serum 2,3-diphosphoglycerate Level and Heart Rate in Off-road Cyclists

Content

Title variants

Languages of publication

EN

Abstracts

EN
The main objective of the work was to evaluate the influence of a six day supplementation with sodium phosphate on circulatory and pulmonary variables, the level of 2,3-diphosphoglycerate (2,3-DPG) and the concentration of inorganic phosphates in blood serum of elite off-road cyclists. The research material included 19 cyclists which were randomly divided into a experimental group, supplemented with sodium phosphate and a control group receiving a placebo The subjects in the experimental group ingested sodium diphosphate in a dose of 50mg/kg of fat free mass per day. The supplement was ingested in even doses, four times per day. The control group received 4g of glucose in gelatin capsules (500mg), which were also divided into 4 even portions. During the experiment a significant (p<0.05) increase in maximal oxygen uptake was observed (VO2max), maximal minute ventilation (VEmax), as well as oxygen pulse (O2/HR). Also a significant decrease in resting and maximal exercise heart rate occurred. This was also true for each exercise load. A significant (p<0.05) increase in the serum concentration of non-organic phosphates (P) was observed which was accompanied by a decrease in serum calcium (Ca) concentration. The changes in the resting and post exercise concentration of 2,3-DPG were non significant, yet the supplementation procedure showed a tendency for increased level of this variable.

Publisher

Year

Volume

19

Pages

149-164

Physical description

Dates

published
1 - 1 - 2008
online
24 - 10 - 2008

Contributors

author
  • Department of Theory of Sports Training, Academy of Physical Education, Katowice, Poland
author
  • Department of Theory of Sports Training, Academy of Physical Education, Katowice, Poland
  • Department of Biochemistry, Academy of Physical Education, Katowice, Poland
  • Department of Theory of Sports Training, Academy of Physical Education, Katowice, Poland

References

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  • Lichtman M. A., Miller D. R., Cohen J. Waterhouse C. (1971) Reduced red cell glycolysis. 2,3-difosfoglycerate and adenosine triphosphate concentration and increased hemoglobin-oxygen affinity cased by hypophosphatemia. Annals of Internal Medicine; 74: 562.[Crossref]
  • Lunne D., Zauner C., Cade R., Wright T., Conte M. (1990) Effect of phosphate loading on RBC 2,3-DPG, cardiac output, and oxygen utilization at rest and during vigorous exercise. Clin Res. 28:810.
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  • Tremblay M. S., Gallowey S. D., and Sexsmith J. R. (1996) The effects of acute phosphate supplementation in subjects of different aerobic fitness levels. Eur. J. Appl. Physiol. 72: 224-230.
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Document Type

Publication order reference

Identifiers

YADDA identifier

bwmeta1.element.-psjd-doi-10_2478_v10078-008-0012-z
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