11 week Beta-Hydroxy beta-Methylbutyric acid (HMB) supplementation: Effects on body composition and exercise performance in trained athletes.

Author: McIntosh, Nicholas Dean

Date: 2015

Publisher: University of Otago

Type: Thesis

Link to this item using this URL: http://hdl.handle.net/10523/5691

University of Otago

Abstract

Background: Originally used in the farming industry to ‘bulk up’ cattle, interest in the leucine metabolite, beta-hydroxy beta-methylbutyrate (HMB), has been growing following a clinical trial which demonstrated significant improvements in strength and body composition in humans. Subsequent trials reaffirmed that previously untrained individuals benefitted from supplementation. However, trials involving athletes have demonstrated mixed results with short (0.05), nor was there a statistically significant difference with respect to skin fold measurements (p>0.05). Conclusion: The increase in body mass found in this study is consistent with other long term (>6 week) HMB supplementation studies. These gains in body mass may have influenced running performance as a larger mass is required to be moved. As no significant differences in body composition or strength were seen, the findings of this study suggest caution needs to be taken when supplementing with HMB as negative performance effects may occur. Therefore close attention to the type of activities required by the athlete needs to be considered prior to supplementation.

Subjects: Beta hydroxy beta methylbutyrate, HMB, athletes, Body composition, Exercise performance

Citation: ["McIntosh, N. D. (2015). 11 week Beta-Hydroxy beta-Methylbutyric acid (HMB) supplementation: Effects on body composition and exercise performance in trained athletes. (Thesis, Bachelor of Medical Science with Honours). University of Otago. Retrieved from http://hdl.handle.net/10523/5691"]

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