Effects of acute multinutrient supplementation on rugby union game performance and recovery

Minett, G; Duffield, R; Bird, SP

Effects of acute multinutrient supplementation on rugby union game performance and recovery

Minett, G Duffield, R

Bird, SP

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Publication Type:: Journal Article
Citation:: International Journal of Sports Physiology and Performance, 2010, 5 (1), pp. 27 - 41
Issue Date:: 2010-03-01

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Field	Value	Language
dc.contributor.author	Minett, G	en_US
dc.contributor.author	Duffield, R https://orcid.org/0000-0002-5641-1314	en_US
dc.contributor.author	Bird, SP	en_US
dc.date.issued	2010-03-01	en_US
dc.identifier.citation	International Journal of Sports Physiology and Performance, 2010, 5 (1), pp. 27 - 41	en_US
dc.identifier.issn	1555-0265	en_US
dc.identifier.uri	http://hdl.handle.net/10453/28471
dc.description.abstract	Purpose: To investigate the effects of an acute multinutrient supplement on gamebased running performance, peak power output, anaerobic by-products, hormonal profiles, markers of muscle damage, and perceived muscular soreness before, immediately after, and 24 h following competitive rugby union games. Methods: Twelve male rugby union players ingested either a comprehensive multinutrient supplement (SUPP), [RE-ACTIVATE:01], or a placebo (PL) for 5 d. Participants then performed a competitive rugby union game (with global positioning system, tracking), with associated blood draws and vertical jump assessments pre, immediately post and 24 h following competition. Results: SUPP ingestion resulted in moderate to large effects for augmented 1st half very high intensity running (VHIR) mean speed (5.9 ± 0.4 vs 4.8 ± 2.3 m-mirr-1; d = 0.93). Further, moderate increases in 2nd half VHIR distance (137 ± 119 vs 83 ± 89 m; d = 0.73) and VHIR mean speed (5.9 ± 0.6 v 5.3 ± 1.7 m-mirr-1; d = 0.56) in SUPP condition were also apparent. Postgame aspartate aminotransferase (AST; 44.1 ± 11.8 vs 37.0 ± 3.2 UL; d = 1.16) and creatine kinase (CK; 882 ± 472 vs. 645 ± 123 UL; d = 0.97) measures demonstrated increased values in the SUPP condition, while AST and CK values correlated with 2nd half VHIR distance (r = -0.71 and r = -0.76 respectively). Elevated C-reactive protein (CRP) was observed postgame in both conditions; however, it was significantly blunted with SUPP (P = .05). Conclusions: These findings suggest SUPP may assist in the maintenance of VHIR during rugby union games, possibly via the buffering qualities of SUPP ingredients. However, correlations between increased work completed at very high intensities and muscular degradation in SUPP conditions, may mask any anticatabolic properties of the supplement. © human kinetics, Inc.	en_US
dc.relation.ispartof	International Journal of Sports Physiology and Performance	en_US
dc.subject.classification	Sport Sciences	en_US
dc.subject.mesh	Muscle, Skeletal	en_US
dc.subject.mesh	Humans	en_US
dc.subject.mesh	Acute Disease	en_US
dc.subject.mesh	Aspartate Aminotransferases	en_US
dc.subject.mesh	Creatine Kinase	en_US
dc.subject.mesh	C-Reactive Protein	en_US
dc.subject.mesh	Adaptation, Physiological	en_US
dc.subject.mesh	Analysis of Variance	en_US
dc.subject.mesh	Biomarkers	en_US
dc.subject.mesh	Competitive Behavior	en_US
dc.subject.mesh	Cross-Over Studies	en_US
dc.subject.mesh	Dietary Supplements	en_US
dc.subject.mesh	Double-Blind Method	en_US
dc.subject.mesh	Football	en_US
dc.subject.mesh	Geographic Information Systems	en_US
dc.subject.mesh	Male	en_US
dc.subject.mesh	Muscle Contraction	en_US
dc.subject.mesh	Statistics as Topic	en_US
dc.subject.mesh	Young Adult	en_US
dc.title	Effects of acute multinutrient supplementation on rugby union game performance and recovery	en_US
dc.type	Journal Article
utslib.citation.volume	1	en_US
utslib.citation.volume	5	en_US
utslib.for	1106 Human Movement and Sports Sciences	en_US
utslib.for	1116 Medical Physiology	en_US
utslib.for	1701 Psychology	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Health
pubs.organisational-group	/University of Technology Sydney/Faculty of Health/Sports and Exercise Science
pubs.organisational-group	/University of Technology Sydney/Strength - CHSP - Health Services and Practice
utslib.copyright.status	closed_access
pubs.issue	1	en_US
pubs.publication-status	Published	en_US
pubs.volume	5	en_US

Abstract:

Purpose: To investigate the effects of an acute multinutrient supplement on gamebased running performance, peak power output, anaerobic by-products, hormonal profiles, markers of muscle damage, and perceived muscular soreness before, immediately after, and 24 h following competitive rugby union games. Methods: Twelve male rugby union players ingested either a comprehensive multinutrient supplement (SUPP), [RE-ACTIVATE:01], or a placebo (PL) for 5 d. Participants then performed a competitive rugby union game (with global positioning system, tracking), with associated blood draws and vertical jump assessments pre, immediately post and 24 h following competition. Results: SUPP ingestion resulted in moderate to large effects for augmented 1st half very high intensity running (VHIR) mean speed (5.9 ± 0.4 vs 4.8 ± 2.3 m-mirr-1; d = 0.93). Further, moderate increases in 2nd half VHIR distance (137 ± 119 vs 83 ± 89 m; d = 0.73) and VHIR mean speed (5.9 ± 0.6 v 5.3 ± 1.7 m-mirr-1; d = 0.56) in SUPP condition were also apparent. Postgame aspartate aminotransferase (AST; 44.1 ± 11.8 vs 37.0 ± 3.2 UL; d = 1.16) and creatine kinase (CK; 882 ± 472 vs. 645 ± 123 UL; d = 0.97) measures demonstrated increased values in the SUPP condition, while AST and CK values correlated with 2nd half VHIR distance (r = -0.71 and r = -0.76 respectively). Elevated C-reactive protein (CRP) was observed postgame in both conditions; however, it was significantly blunted with SUPP (P = .05). Conclusions: These findings suggest SUPP may assist in the maintenance of VHIR during rugby union games, possibly via the buffering qualities of SUPP ingredients. However, correlations between increased work completed at very high intensities and muscular degradation in SUPP conditions, may mask any anticatabolic properties of the supplement. © human kinetics, Inc.

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http://hdl.handle.net/10453/28471