Effects of ß-hydroxy-ß-methylbutyrate and creatine monohydrate supplementation on the aerobic and anaerobic capacity of highly trained athletes

O'Connor, D.M., and Crowe, M.J. (2003) Effects of ß-hydroxy-ß-methylbutyrate and creatine monohydrate supplementation on the aerobic and anaerobic capacity of highly trained athletes. Journal of Sports Medicine and Physical Fitness, 43 (1). pp. 64-68.

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Abstract

AIM: The aim of this study was to investigate the effects of 6 wks oral supplementation of beta-hydroxy-beta-methylbutyrate (HMB) and a mixture of HMB and creatine monohydrate (HMBCr) on aerobic and anaerobic capacity in highly trained athletes. It was hypothesised that HMB and HMBCr would have positive effects on aerobic and anaerobic power.

METHODS: A prospective study involving a repeated measures design was utilised where subjects underwent testing prior to, and immediately after, a 6 wks supplementation period. Elite, male rugby league players (n=27) were divided into 3 groups, a control group (n=6), a HMB group (3 g/d; n=10) and a HMBCr group (3 g/d HMB + 3 g/d Cr; n=11). Testing involved a multistage fitness test to determine aerobic power and a 60 sec maximal cycle test to determine anaerobic capacity. Peak power, total work and peak lactate levels were measured in the anaerobic cycle test.

RESULTS: Two-way repeated measures ANOVA revealed no effect of HMB or HMBCr on any of the measured parameters in comparison to the control group. CONCLUSION: Aerobic and anaerobic ability of highly trained male athletes is unaffected by 6 wks oral supplementation with HMB or a combination of HMB and creatine monohydrate.

Item ID: 6685
Item Type: Article (Refereed Research - C1)
Keywords: creatine; dietary supplements; ergogenic; exercise; HMB
ISSN: 1827-1928
Date Deposited: 23 Mar 2010 22:41
FoR Codes: 11 MEDICAL AND HEALTH SCIENCES > 1106 Human Movement and Sports Science > 110602 Exercise Physiology @ 80%
11 MEDICAL AND HEALTH SCIENCES > 1106 Human Movement and Sports Science > 110604 Sports Medicine @ 20%
SEO Codes: 92 HEALTH > 9299 Other Health > 929999 Health not elsewhere classified @ 70%
92 HEALTH > 9204 Public Health (excl. Specific Population Health) > 920411 Nutrition @ 30%
Citation Count from Web of Science Web of Science 17
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