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Glycerol Hyperhydration and Endurance Running Performance in the Heat

Scheadler, Cory Martin
http://rave.ohiolink.edu/etdc/view?acc_num=osu1249921238

Abstract Details

2009, Master of Arts, Ohio State University, ED Physical Activities and Educational Services.
Glycerol hyperhydration has been used to induce fluid retention prior to exercise to offset dehydration. Conflicting results exist on whether it reduces cardiovascular and thermal strain while improving endurance performance. Few studies have used a protocol that mimics athletic races; none have been done on running performance. Six endurance trained runners (VO2peak = 60.7 ml·kg-1·min-1) completed a run at a self-selected pace, estimated to take 1 hour. Temperature was set at 30°C and 50% humidity. A randomized, double-blind, cross-over design was used for glycerol (Gly) ingestion, given as 1.2 g·kg-1 bodyweight with a total fluid ingestion of 26 ml·kg-1 bodyweight, or placebo (Pl) of water ingestion of an equal amount, beginning 2.5 hours prior to exercise. Glycerol hyperhydration did not result in increased fluid retention over water hyperhydration (Gly = 977 ml, Pl = 391 ml, p > 0.05). Time to complete the run was not different between trials (Gly = 4074 s, Pl = 4079 s, p > 0.05). Heart rate, core temperature, and RPE were not different between trials at any distance or 5 min interval during the run. Our main hypothesis was not supported; during a self-selected pace protocol, runners did not experience an increase in performance with prior glycerol ingestion.
Steven Devor, PhD (Advisor)
Timothy Kirby, PhD (Committee Member)
48 p.
Health; Physical Education; Recreation; Sports Medicine
glycerol; hyperhydration; dehydration; run; performance

Recommended Citations

Citations

  • Scheadler, C. M. (2009). Glycerol Hyperhydration and Endurance Running Performance in the Heat [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1249921238

    APA Style (7th edition)

  • Scheadler, Cory. Glycerol Hyperhydration and Endurance Running Performance in the Heat. 2009. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1249921238.

    MLA Style (8th edition)

  • Scheadler, Cory. "Glycerol Hyperhydration and Endurance Running Performance in the Heat." Master's thesis, Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1249921238

    Chicago Manual of Style (17th edition)

osu1249921238
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© 2009, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.