Should carbohydrate concentration of a sports drink be less than 8% during exercise in the heat?

International Journal of Sport Nutrition and Exercise Metabolism

Volumn 15, Issue 2, 2005, Pages 117-130

  Millard Stafford, Mindy L ^a   Sparling, Phillip B ^a   Rosskopf, Linda B ^a   Snow, Teresa K ^a  

^a GEORGIA INSTITUTE OF TECHNOLOGY   (United States)

Author keywords

Electrolytes; Fluid replacement; Hyperthermia; Sports drinks

Indexed keywords

CARBOHYDRATE; DEUTERIUM OXIDE; DRINKING WATER; ELECTROLYTE; GLUCOSE; PLACEBO;

ADULT; ARTICLE; CARBOHYDRATE ANALYSIS; CONTROLLED STUDY; CORE TEMPERATURE; EXERCISE; GLUCOSE BLOOD LEVEL; HEAT; HUMAN; HUMAN EXPERIMENT; LUNG GAS EXCHANGE; MALE; NORMAL HUMAN; RECTUM TEMPERATURE; RUNNING;

EID: 18244375553     PISSN: 1526484X     EISSN: None     Source Type: Journal    
DOI: 10.1123/ijsnem.15.2.117     Document Type: Article

References (42)

1. American College of Sports Medicine. Position stand: exercise and fluid replacement. Med. Sci. Sports Exerc. 28:i-vii, 1996.
2. Below, P.R., R. Mora-Rodriquez, J. Gonzalez-Alonzo, and E. F. Coyle. Fluid and carbohydrate ingestion independently improve performance during 1 h of intense exercise. Med. Sci. Sports Exerc. 27:200-210, 1995.
3. Borg, G. Perceived exertion: a note on "history" and methods. Med. Sci. Sports Exerc. 19:398-403, 1987.
4. Brouns, F.J. Heat-sweat-dehydration: a praxis oriented approach. J. Sports Sciences. 9:143-152, 1991.
5. Carter, J., A.E. Jeukendrup, T. Mundel, and D.A. Jones. Carbohydrate supplementation improves moderate and high-intensity exercise in the heat. Pflugers Arch. Eur. J. Appl. Physiol. 446:211-219, 2003.
6. Casa, D.J., L.E. Armstong, S.K. Hillman, S.J. Montain, R.V. Reiff, B.S. Rieh, W.O. Roberts, and J.A. Stone. National Athletic Trainers'Association Position Statement: Fluid Replacement for Athletes. J. Athletic Training. 35:212-224, 2000.
7. Cole, K.J., P.W.Grandjean, R.J.Sobszak, and J.B. Mitchell. Effect of carbohydrate composition on fluid balance, gastric emptying, and exercise performance. Int. J. Sport Nutr. 3:408-417, 1993.
8. Coombes, J.S., and K.L. Hamilton. The effectiveness of commercially available sports drinks. Sports Med. 29:181-209, 2000.
9. Costill, D.L., and B. Saltin. Factors limiting gastric emptying during rest and exercise. J. Appl. Physiol. 37:679-683, 1974.
10. Coyle, E.F., A.R. Coggan, M.K. Hemmert, and J.L. Ivy. Muscle glycogen utilization during prolonged strenuous exercise when fed carbohydrate. J. Appl. Physiol. 61:165-172, 1986.
11. Davis, J.M., W.A. Burgess, C.A. Slentz, and W.P. Bartoli. Fluid availability of sports drinks differing in carbohydrate type and concentration. Am. J. Clin. Nutr. 51:1054-1057, 1990.
12. 2O-labeled beverages. J. Appl. Physiol. 63:2060-2066, 1987.
13. Davis, J.M., W.A. Burgess, C.A. Slentz, W.P. Bartoli, and R.R. Pate. Effects of ingesting 6% and 12% glucose/electrolyte beverage during prolonged intermittent cycling in the heat. Eur. J. Appl. Physiol. 57:563-569, 1988.
14. Dill, D.B., and D.L. Costill. Calculation of percentage changes in volumes of blood, plasma, and red cells in dehydration. J. Appl. Physiol. 37:247-248, 1974.
15. Febbraio, M.A. Does muscle function and metabolism affect exercise performance in the heat? Exerc. Sport Sci. Reviews 28:171-176, 2000.
16. Febbraio, M.A., P. Murton, S.E. Selig, S.A. Clark, D.L. Lambert, D.J. Angus, and M.F. Carey. Effect of carbohydrate ingestion on exercise metabolism and performance in different ambient temperatures. Med. Sci. Sports Exerc. 28:1380-1387, 1996.
17. Febbraio, M.A., R.J. Snow, M. Hargreaves, C.G. Stathis, I.K. Martin, and M.F. Carey. Muscle metabolism during exercise and heat stress in trained men: effect of acclimation. J. Appl. Physiol. 76:589-597, 1994.
18. Fritzsche, R.G., T.W. Switzer, B.J. Hodgkinson, S. Lee, J.C. Martin, and E.F. Coyle. Water and carbohydrate ingestion during prolonged exercise increase maximal neuromuscular power. J. Appl. Physiol. 88:739-737, 2000.
19. Galloway, S.D., and R.J. Maughan. Effects of ambient temperature on the capacity to perform prolonged cycle exercise in man. Med. Sci. Sports Exerc. 29:1240-1249, 1997.
20. Gisolfi, C.V., R.W. Summers, H.P. Schedl, T.L. Bleiler, and R.A. Oppliger. Human intestinal water absorption: direct vs. indirect measurements. Am. J. Physiol. 258:G216-G222, 1990.
21. Gonzalez-Alonso J., C. Teller, S.L. Andersen et al. Influence of body temperature on the development of fatigue during prolonged exercise in the heat. J. Appl. Physiol. 86:1032-1039, 1999.
22. Hargreaves, M. and Febrraio, M. Limits to exercise performance in the heat. Int. J. Sports Med. 19:S115-S116, 1998.
23. Jentjens, R., A. Wagenmakers, and A. Jeukendrup. Heat stress increases muscle glycogen use but reduces the oxidation of ingested carbohydrates during exercise. J. Appl. Physiol. 92:1562-1572, 2002.
24. Lambert, G.P., R.T. Chang, T. Xia, R.W. Summers, and C.V. Gisolfi. Absorption from different intestinal segments during exercise. J. Appl. Physiol. 83:204-212, 1997.
25. Maughan, R., J.B. Leiper, and B.A. McGaw. Effects of exercise intensity on absorption of ingested fluids in man. Exp. Physiol. 75:419-421, 1990.
26. Millard-Stafford, M., P.B. Sparling, L.B. Rosskopf, and L.J. DiCarlo. Carbohydrate-electrolyte replacement improves distance running performance in the heat. Med. Sci. Sports Exerc. 24:934-940, 1992.
27. Mitchell, J.B. W.A. Braun, F.X. Pizza, and M. Forrest. Pre-exercise carbohydrate and fluid ingestion: influence of glycemic response on 10-km treadmill running performance in the heat. J. Sports Med. Phys. Fit. 40:41-50, 2000.
28. Montain, S.J., and E.F. Coyle. Influence of graded dehydration on hyperthermia and cardiovascular drift during exercise. J. Appl. Physiol. 73:1340-1350, 1992.
29. Murray, R.W. Bartoli, J. Stofan, M. Horn, and D. Eddy. A comparison of the gastric emptying characteristics of selected sports drinks. Int. J. Sports Nutr. 9:263-274, 1999.
30. Murray, R., G.L. Paul, J.G. Seifert, D.E. Eddy, and G.A. Halaby. The effects of glucose, fructose, and sucrose ingestion during exercise. Med. Sci. Sports Exerc. 21:275-282, 1989.
31. Murray R, J.G. Seifert, D.E. Eddy, G.L. Paul, and G.A. Halaby. Carbohydrate feeding and exercise: effect of beverage carbohydrate content. Eur. J. Appl. Physiol. Occup. Physiol. 59:152-158, 1989.
32. Nielsen, B. Heat stress causes fatigue! Exercise performance during acute and repeated exposures to hot, dry environments. In: Muscle Fatigue Mechanisms in Exercise and Training, P. Marconnet et al., eds. Basel: Karger, 1992:207-217.
33. Noakes, T.D., K.H. Myburgh, J.du Plessis, L. Lang, M. Lambert, C. vanderRiet, and R. Schall. Metabolic rate not dehydration predicts rectal temperature in marathon runners. Med. Sci. Sports Exerc.23:443-449, 1991.
34. Noakes, T.D., N.J. Rehrer, and R.J. Maughan. The importance of volume in regulating gastric emptying. Med. Sci. Sports Exerc. 23:307, 1991.
35. Nybo, L. CNS fatigue and prolonged exercise: effect of glucose supplementation. Med. Sci. Sports Exerc. 35:589-594, 2003.
36. Owen, M.D., K.C. Kregel, P.T. Wall, and C.V. Gisolfi. Effects of ingesting carbohydrate beverages during exercise in the heat. Med. Sci. Sports Exerc. 18:568-575, 1986.
37. Parkin, J.M., M.F. Carey , S. Zhao, and M.A. Febbraio. Effect of ambient temperature on human skeletal muscle metabolism during fatiguing submaximal exercise. J. Appl. Physiol. 86:902-908, 1999.
38. Pitsiladis, Y.P. and R. J. Maughan. The effects of exercise and diet manipulation on the capacity to perform prolonged exercise in the heat and in the cold in trained humans. J. Physiol. (London) 515: 919-930, 1999.
39. Rehrer, N.J. Fluid and electrolyte balance in ultra-endurance sport. Sports Med. 31:701-715, 2001.
40. Ryan, A. J., G.P. Lambert, X. Shi, R.T. Change, R.W. Summers, and C.V. Gisolfi. Effect of hypohydration on gastric emptying and intestinal absorption during exercise. J. Appl. Physiol. 84:1582-1588, 1998.
41. Schedl, H.P., R. J. Maughan, and C. V. Gisolfi. Intestinal absorption during rest and exercise: implications for formulating an oral rehydration solution (ORS). Med. Sci. Sports Exerc. 26:267-280, 1994.
42. Shi, S. and C.V. Gisolfi. Fluid and carbohydrate replacement during intermittent exercise Sports Med. 25:157-172, 1998.