No Cover Image

Journal article 1464 views

β-Hydroxy β-Methylbutyrate (HMB) Supplementation Effects on Body Mass and Performance in Elite Male Rugby Union Players

Nicholas D. McIntosh, Thomas D. Love, Jillian J Haszard, Hamish R Osborne, Katherine E. Black, Tom Love Orcid Logo

Journal of Strength and Conditioning Research, Volume: 32, Issue: 1, Pages: 19 - 26

Swansea University Author: Tom Love Orcid Logo

Full text not available from this repository: check for access using links below.

Check full text

DOI (Published version): 10.1519/JSC.0000000000001695

Abstract

Preseason is characterized by high training volumes with short recovery periods β-hydroxy β-methylbutyrate (HMB) has been postulated to assist with recovery. β-hydroxy β-methylbutyrate has been shown to improve strength and body composition among untrained groups; the benefits of HMB among trained p...

Full description

Published in: Journal of Strength and Conditioning Research
ISSN: 1064-8011
Published: 2018
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa40686
first_indexed 2018-06-08T19:31:40Z
last_indexed 2018-06-08T19:31:40Z
id cronfa40686
recordtype SURis
fullrecord <?xml version="1.0"?><rfc1807><datestamp>2018-06-08T14:41:17.4223010</datestamp><bib-version>v2</bib-version><id>40686</id><entry>2018-06-08</entry><title>&#x3B2;-Hydroxy &#x3B2;-Methylbutyrate (HMB) Supplementation Effects on Body Mass and Performance in Elite Male Rugby Union Players</title><swanseaauthors><author><sid>ec50e8c32b3a1274b1022f9d5412478c</sid><ORCID>0000-0002-9404-5394</ORCID><firstname>Tom</firstname><surname>Love</surname><name>Tom Love</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2018-06-08</date><deptcode>EAAS</deptcode><abstract>Preseason is characterized by high training volumes with short recovery periods &#x3B2;-hydroxy &#x3B2;-methylbutyrate (HMB) has been postulated to assist with recovery. &#x3B2;-hydroxy &#x3B2;-methylbutyrate has been shown to improve strength and body composition among untrained groups; the benefits of HMB among trained populations are unclear because of the methodologies employed. This randomized control trail determined the effects of 11 weeks HMB supplementation on body mass and performance measures in 27 elite rugby players. &#x3B2;-hydroxy &#x3B2;-methylbutyrate group (n = 13), mean &#xB1; SD age 20.3 &#xB1; 1.2 years, body mass 99.6 &#xB1; 9.1 kg; placebo group (n = 14), age 21.9 &#xB1; 2.8 years body mass 99.4 &#xB1; 13.9 kg for placebo. During the supplementation period, body mass increased with HMB 0.57 &#xB1; 2.60 kg but decreased with placebo 1.39 &#xB1; 2.02 kg (p = 0.029). There were no significant differences in any of the 4 strength variables (p &gt; 0.05). However, on the yo-yo intermittent recovery test (YoYo IR-1), the placebo group improved 4.0 &#xB1; 2.8 levels but HMB decreased 2.0 &#xB1; 3.0 levels (p = 0.003). The results of this study suggest that HMB could be beneficial for gaining or maintaining body mass during periods of increased training load. However, it appears that HMB may be detrimental to intermittent running ability in this group although further research is required before firm conclusions can be made. Only 6 participants on HMB managed to complete both YoYo IR-1 tests because of injury, a larger sample size is required to fully investigate this potentially negative effect. Further, the mechanisms behind this decrement in performance cannot be fully explained and requires further biochemical and psychological investigation.</abstract><type>Journal Article</type><journal>Journal of Strength and Conditioning Research</journal><volume>32</volume><journalNumber>1</journalNumber><paginationStart>19</paginationStart><paginationEnd>26</paginationEnd><publisher/><issnPrint>1064-8011</issnPrint><keywords/><publishedDay>31</publishedDay><publishedMonth>1</publishedMonth><publishedYear>2018</publishedYear><publishedDate>2018-01-31</publishedDate><doi>10.1519/JSC.0000000000001695</doi><url/><notes/><college>COLLEGE NANME</college><department>Engineering and Applied Sciences School</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>EAAS</DepartmentCode><institution>Swansea University</institution><apcterm/><lastEdited>2018-06-08T14:41:17.4223010</lastEdited><Created>2018-06-08T14:36:30.0204191</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences</level></path><authors><author><firstname>Nicholas D.</firstname><surname>McIntosh</surname><order>1</order></author><author><firstname>Thomas D.</firstname><surname>Love</surname><order>2</order></author><author><firstname>Jillian J</firstname><surname>Haszard</surname><order>3</order></author><author><firstname>Hamish R</firstname><surname>Osborne</surname><order>4</order></author><author><firstname>Katherine E.</firstname><surname>Black</surname><order>5</order></author><author><firstname>Tom</firstname><surname>Love</surname><orcid>0000-0002-9404-5394</orcid><order>6</order></author></authors><documents/><OutputDurs/></rfc1807>
spelling 2018-06-08T14:41:17.4223010 v2 40686 2018-06-08 β-Hydroxy β-Methylbutyrate (HMB) Supplementation Effects on Body Mass and Performance in Elite Male Rugby Union Players ec50e8c32b3a1274b1022f9d5412478c 0000-0002-9404-5394 Tom Love Tom Love true false 2018-06-08 EAAS Preseason is characterized by high training volumes with short recovery periods β-hydroxy β-methylbutyrate (HMB) has been postulated to assist with recovery. β-hydroxy β-methylbutyrate has been shown to improve strength and body composition among untrained groups; the benefits of HMB among trained populations are unclear because of the methodologies employed. This randomized control trail determined the effects of 11 weeks HMB supplementation on body mass and performance measures in 27 elite rugby players. β-hydroxy β-methylbutyrate group (n = 13), mean ± SD age 20.3 ± 1.2 years, body mass 99.6 ± 9.1 kg; placebo group (n = 14), age 21.9 ± 2.8 years body mass 99.4 ± 13.9 kg for placebo. During the supplementation period, body mass increased with HMB 0.57 ± 2.60 kg but decreased with placebo 1.39 ± 2.02 kg (p = 0.029). There were no significant differences in any of the 4 strength variables (p > 0.05). However, on the yo-yo intermittent recovery test (YoYo IR-1), the placebo group improved 4.0 ± 2.8 levels but HMB decreased 2.0 ± 3.0 levels (p = 0.003). The results of this study suggest that HMB could be beneficial for gaining or maintaining body mass during periods of increased training load. However, it appears that HMB may be detrimental to intermittent running ability in this group although further research is required before firm conclusions can be made. Only 6 participants on HMB managed to complete both YoYo IR-1 tests because of injury, a larger sample size is required to fully investigate this potentially negative effect. Further, the mechanisms behind this decrement in performance cannot be fully explained and requires further biochemical and psychological investigation. Journal Article Journal of Strength and Conditioning Research 32 1 19 26 1064-8011 31 1 2018 2018-01-31 10.1519/JSC.0000000000001695 COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University 2018-06-08T14:41:17.4223010 2018-06-08T14:36:30.0204191 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences Nicholas D. McIntosh 1 Thomas D. Love 2 Jillian J Haszard 3 Hamish R Osborne 4 Katherine E. Black 5 Tom Love 0000-0002-9404-5394 6
title β-Hydroxy β-Methylbutyrate (HMB) Supplementation Effects on Body Mass and Performance in Elite Male Rugby Union Players
spellingShingle β-Hydroxy β-Methylbutyrate (HMB) Supplementation Effects on Body Mass and Performance in Elite Male Rugby Union Players
Tom Love
title_short β-Hydroxy β-Methylbutyrate (HMB) Supplementation Effects on Body Mass and Performance in Elite Male Rugby Union Players
title_full β-Hydroxy β-Methylbutyrate (HMB) Supplementation Effects on Body Mass and Performance in Elite Male Rugby Union Players
title_fullStr β-Hydroxy β-Methylbutyrate (HMB) Supplementation Effects on Body Mass and Performance in Elite Male Rugby Union Players
title_full_unstemmed β-Hydroxy β-Methylbutyrate (HMB) Supplementation Effects on Body Mass and Performance in Elite Male Rugby Union Players
title_sort β-Hydroxy β-Methylbutyrate (HMB) Supplementation Effects on Body Mass and Performance in Elite Male Rugby Union Players
author_id_str_mv ec50e8c32b3a1274b1022f9d5412478c
author_id_fullname_str_mv ec50e8c32b3a1274b1022f9d5412478c_***_Tom Love
author Tom Love
author2 Nicholas D. McIntosh
Thomas D. Love
Jillian J Haszard
Hamish R Osborne
Katherine E. Black
Tom Love
format Journal article
container_title Journal of Strength and Conditioning Research
container_volume 32
container_issue 1
container_start_page 19
publishDate 2018
institution Swansea University
issn 1064-8011
doi_str_mv 10.1519/JSC.0000000000001695
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences
document_store_str 0
active_str 0
description Preseason is characterized by high training volumes with short recovery periods β-hydroxy β-methylbutyrate (HMB) has been postulated to assist with recovery. β-hydroxy β-methylbutyrate has been shown to improve strength and body composition among untrained groups; the benefits of HMB among trained populations are unclear because of the methodologies employed. This randomized control trail determined the effects of 11 weeks HMB supplementation on body mass and performance measures in 27 elite rugby players. β-hydroxy β-methylbutyrate group (n = 13), mean ± SD age 20.3 ± 1.2 years, body mass 99.6 ± 9.1 kg; placebo group (n = 14), age 21.9 ± 2.8 years body mass 99.4 ± 13.9 kg for placebo. During the supplementation period, body mass increased with HMB 0.57 ± 2.60 kg but decreased with placebo 1.39 ± 2.02 kg (p = 0.029). There were no significant differences in any of the 4 strength variables (p > 0.05). However, on the yo-yo intermittent recovery test (YoYo IR-1), the placebo group improved 4.0 ± 2.8 levels but HMB decreased 2.0 ± 3.0 levels (p = 0.003). The results of this study suggest that HMB could be beneficial for gaining or maintaining body mass during periods of increased training load. However, it appears that HMB may be detrimental to intermittent running ability in this group although further research is required before firm conclusions can be made. Only 6 participants on HMB managed to complete both YoYo IR-1 tests because of injury, a larger sample size is required to fully investigate this potentially negative effect. Further, the mechanisms behind this decrement in performance cannot be fully explained and requires further biochemical and psychological investigation.
published_date 2018-01-31T16:09:08Z
_version_ 1832109052740501504
score 11.05923

Similar Items