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Article: The effect of a pre-exercise carbohydrate meal on immune responses to an endurance performance run

TitleThe effect of a pre-exercise carbohydrate meal on immune responses to an endurance performance run
Authors
Issue Date2008
PublisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=BJN
Citation
British Journal Of Nutrition, 2008, v. 100 n. 6, p. 1260-1268 How to Cite?
AbstractThis study examined the effect of a pre-exercise meal with different glycaemic index (GI) and glycaemic load (GL) on immune responses to an endurance performance run. Eight men completed a preloaded 1 h run at 70% VO2max on a level treadmill followed by a 10 km performance run on three occasions. In each trial, one of the three prescribed isoenergetic meals, i.e. high GI and high GL (H-H), high GI and low GL (H-L), or low GI and low GL (L-L) was consumed by the subjects 2 h before exercise. Carbohydrate intake (% of energy intake), GI, and GL were 65%, 79.5, and 82.4 for H-H; 36%, 78.5, and 44.1 for H-L; 65%, 40.2, and 42.1 for L-L, respectively. The running time for the three trials was approximately 112 min at 70% VO2max for the first hour and 76% VO2max for the last 52 min. Consumption of pre-exercise high-carbohydrate meals (H-H and L-L) resulted in less perturbation of the circulating numbers of leucocytes, neutrophils and T lymphocyte subsets, and in decreased elevation of the plasma IL-6 concentrations immediately after exercise and during the 2 h recovery period compared with the H-L trial. These responses were accompanied by an attenuated increase in plasma IL-10 concentrations at the the end of the 2 h recovery period. The amount of carbohydrate consumed in the pre-exercise meal may be the most important influencing factor rather than the type of carbohydrate in modifying the immunoendocrine response to prolonged exercise. © The Authors 2008.
Persistent Identifierhttp://hdl.handle.net/10722/148591
ISSN
2015 Impact Factor: 3.311
2015 SCImago Journal Rankings: 1.587
ISI Accession Number ID
Funding AgencyGrant Number
Direct Grant of the Chinese University of Hong Kong
Funding Information:

This research was supported by the Direct Grant of the Chinese University of Hong Kong. The authors wish to thank all the young men who participated in the study. Furthermore, we thank Dr P. K. Chung, Mr Raymond So, and Dr Yvonne Yuan for technical assistance, and Ms Susan Chung for providing the meals and nutritional calculation. We also thank Mr P. W. Li and Dr W. K. Ip from the Department of Chemical Pathology for their technical assistance during data collection. We declare that there is no conflict of interest that we should disclose.

References

 

DC FieldValueLanguage
dc.contributor.authorChen, YJen_US
dc.contributor.authorWong, SHSen_US
dc.contributor.authorWong, CKen_US
dc.contributor.authorLam, CWen_US
dc.contributor.authorHuang, YJen_US
dc.contributor.authorSiu, PMFen_US
dc.date.accessioned2012-05-29T06:13:57Z-
dc.date.available2012-05-29T06:13:57Z-
dc.date.issued2008en_US
dc.identifier.citationBritish Journal Of Nutrition, 2008, v. 100 n. 6, p. 1260-1268en_US
dc.identifier.issn0007-1145en_US
dc.identifier.urihttp://hdl.handle.net/10722/148591-
dc.description.abstractThis study examined the effect of a pre-exercise meal with different glycaemic index (GI) and glycaemic load (GL) on immune responses to an endurance performance run. Eight men completed a preloaded 1 h run at 70% VO2max on a level treadmill followed by a 10 km performance run on three occasions. In each trial, one of the three prescribed isoenergetic meals, i.e. high GI and high GL (H-H), high GI and low GL (H-L), or low GI and low GL (L-L) was consumed by the subjects 2 h before exercise. Carbohydrate intake (% of energy intake), GI, and GL were 65%, 79.5, and 82.4 for H-H; 36%, 78.5, and 44.1 for H-L; 65%, 40.2, and 42.1 for L-L, respectively. The running time for the three trials was approximately 112 min at 70% VO2max for the first hour and 76% VO2max for the last 52 min. Consumption of pre-exercise high-carbohydrate meals (H-H and L-L) resulted in less perturbation of the circulating numbers of leucocytes, neutrophils and T lymphocyte subsets, and in decreased elevation of the plasma IL-6 concentrations immediately after exercise and during the 2 h recovery period compared with the H-L trial. These responses were accompanied by an attenuated increase in plasma IL-10 concentrations at the the end of the 2 h recovery period. The amount of carbohydrate consumed in the pre-exercise meal may be the most important influencing factor rather than the type of carbohydrate in modifying the immunoendocrine response to prolonged exercise. © The Authors 2008.en_US
dc.languageengen_US
dc.publisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=BJNen_US
dc.relation.ispartofBritish Journal of Nutritionen_US
dc.subject.meshAdulten_US
dc.subject.meshBlood Glucose - Metabolismen_US
dc.subject.meshCell Proliferation - Drug Effectsen_US
dc.subject.meshCross-Over Studiesen_US
dc.subject.meshCytokines - Blooden_US
dc.subject.meshDietary Carbohydrates - Administration & Dosage - Pharmacologyen_US
dc.subject.meshExercise - Physiologyen_US
dc.subject.meshExercise Testen_US
dc.subject.meshGlycemic Indexen_US
dc.subject.meshHumansen_US
dc.subject.meshLeukocyte Counten_US
dc.subject.meshLeukocytes - Drug Effects - Immunologyen_US
dc.subject.meshLymphocyte Activation - Drug Effectsen_US
dc.subject.meshMaleen_US
dc.subject.meshNutritional Physiological Phenomena - Immunology - Physiologyen_US
dc.subject.meshPhysical Endurance - Immunology - Physiologyen_US
dc.subject.meshRunning - Physiologyen_US
dc.subject.meshYoung Adulten_US
dc.titleThe effect of a pre-exercise carbohydrate meal on immune responses to an endurance performance runen_US
dc.typeArticleen_US
dc.identifier.emailLam, CW:ching-wanlam@pathology.hku.hken_US
dc.identifier.authorityLam, CW=rp00260en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1017/S0007114508975619en_US
dc.identifier.pmid18466654-
dc.identifier.scopuseid_2-s2.0-56349170796en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-56349170796&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume100en_US
dc.identifier.issue6en_US
dc.identifier.spage1260en_US
dc.identifier.epage1268en_US
dc.identifier.isiWOS:000261900600016-
dc.publisher.placeUnited Kingdomen_US

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