Effect of contrast water therapy duration on recovery of cycling performance: a dose-response study.
Summary of "Effect of contrast water therapy duration on recovery of cycling performance: a dose-response study."
This study investigated whether contrast water therapy (CWT) has a dose-response effect on recovery from high-intensity cycling. Eleven trained male cyclists completed four trials, each commencing with a 75-min cycling protocol containing six sets of five 15-s sprints and three 5-min time-trials in thermoneutral conditions. Ten minutes post-exercise, participants performed one of four recovery protocols: CWT for 6 min (CWT6), 12 min (CWT12), or 18 min (CWT18) duration, or a seated rest control trial. The CWT commenced in hot water (38.4 +/- 0.6 degrees C) and alternated between hot and cold water (14.6 +/- 0.3 degrees C) every minute with a 5-s changeover. The cycling protocol was repeated 2 h after completion of exercise bout one. Prior to exercise bout two, core temperature was lower in CWT12 (-0.19 +/- 0.14 degrees C, mean +/- 90% CL) and CWT18 (-0.21 +/- 0.10 degrees C) than control. Compared with control, CWT6 substantially improved time-trial (1.5 +/- 2.1%) and sprint performance (3.0 +/- 3.1%), and CWT12 substantially improved sprint total work (4.3 +/- 3.4%) and peak power (2.7 +/- 3.8%) in exercise bout two. All CWT conditions generally improved thermal sensation, whole body fatigue and muscle soreness compared with control, but no differences existed between conditions in heart rate or rating of perceived exertion. In conclusion, CWT duration did not have a dose-response effect on recovery from high-intensity cycling; however, CWT for up to 12 min assisted recovery of cycling performance.
Affiliation
Performance Recovery, Australian Institute of Sport, PO Box 176, Belconnen, ACT, 2616, Australia, nathan.versey@ausport.gov.au.
Journal Details
This article was published in the following journal.
Name: European journal of applied physiology
ISSN: 1439-6327
Pages:
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/20809231
- DOI: http://dx.doi.org/10.1007/s00421-010-1614-4
Medical and Biotech [MESH] Definitions
Substrate Cycling
A set of opposing, nonequilibrium reactions catalyzed by different enzymes which act simultaneously, with at least one of the reactions driven by ATP hydrolysis. The results of the cycle are that ATP energy is depleted, heat is produced and no net substrate-to-product conversion is achieved. Examples of substrate cycling are cycling of gluconeogenesis and glycolysis pathways and cycling of the triglycerides and fatty acid pathways. Rates of substrate cycling may be increased many-fold in association with hypermetabolic states resulting from severe burns, cold exposure, hyperthyroidism, or acute exercise.
Karnofsky Performance Status
A performance measure for rating the ability of a person to perform usual activities, evaluating a patient's progress after a therapeutic procedure, and determining a patient's suitability for therapy. It is used most commonly in the prognosis of cancer therapy, usually after chemotherapy and customarily administered before and after therapy. It was named for Dr. David A. Karnofsky, an American specialist in cancer chemotherapy.
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Therapy with two or more separate preparations given for a combined effect.
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Wetting Agents
A surfactant that renders a surface wettable by water or enhances the spreading of water over the surface; used in foods and cosmetics; important in contrast media; also with contact lenses, dentures, and some prostheses. Synonyms: humectants; hydrating agents.
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