Response : Commentary on the effects of hypoxia on energy substrate use during exercise
| العنوان: | Response : Commentary on the effects of hypoxia on energy substrate use during exercise |
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| المؤلفون: | Kevin Deighton, Alex Griffiths, John P. O'Hara, Roderick F. G. J. King, Jamie Matu, Oliver M. Shannon |
| المصدر: | Journal of the International Society of Sports Nutrition Journal of the International Society of Sports Nutrition, Vol 16, Iss 1, Pp 1-6 (2019) |
| بيانات النشر: | BioMed Central, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | medicine.medical_specialty, Carbohydrate, Sports medicine, lcsh:TX341-641, Relative, 030204 cardiovascular system & hematology, Stimulus (physiology), 03 medical and health sciences, 0302 clinical medicine, Nutritional Interventions, Internal medicine, Oxidation, Medicine, Humans, lcsh:Sports medicine, Hypoxia, Exercise, Nutrition and Dietetics, business.industry, Altitude, 030229 sport sciences, Hypoxia (medical), Absolute, RER, Adipose Tissue, Fat, Cardiology, Exercise intensity, Commentary, Carbohydrate Metabolism, Regression Analysis, medicine.symptom, lcsh:RC1200-1245, business, lcsh:Nutrition. Foods and food supply, Food Science |
| الوصف: | A better understanding of hypoxia-induced changes in substrate utilisation can facilitate the development of nutritional strategies for mountaineers, military personnel and athletes during exposure to altitude. However, reported metabolic responses are currently divergent. As such, this systematic review and meta-analysis aims to determine the changes in substrate utilisation during exercise in hypoxia compared with normoxia and identify study characteristics responsible for the heterogeneity in findings.A total of six databases (PubMed, the Cochrane Library, MEDLINE, SPORTDiscus, PsychINFO, and CINAHL via EBSCOhost) were searched for published original studies, conference proceedings, abstracts, dissertations and theses. Studies were included if they evaluated respiratory exchange ratio (RER) and/or carbohydrate or fat oxidation during steady state exercise matched for relative intensities in normoxia and hypoxia (normobaric or hypobaric). A random-effects meta-analysis was performed on outcome variables. Meta-regression analysis was performed to investigate potential sources of heterogeneity.In total, 18 studies were included in the meta-analysis. There was no significant change in RER during exercise matched for relative exercise intensities in hypoxia, compared with normoxia (mean difference: 0.01, 95% CI: -0.02 to 0.05; n = 31, p = 0.45). Meta-regression analysis suggests that consumption of a pre-exercise meal (p 0.01) and a higher exercise intensity (p = 0.04) when exposed to hypoxia may increase carbohydrate oxidation compared with normoxia.Exposure to hypoxia did not induce a consistent change in the relative contribution of carbohydrate or fat to the total energy yield during exercise matched for relative intensities, compared with normoxia. The direction of these responses appears to be mediated by the consumption of a pre-exercise meal and exercise intensity. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1550-2783 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::098c933928f1749b1229e234c7cf148eTest https://eprints.leedsbeckett.ac.uk/id/eprint/6408/6/ResponseCommentaryOnTheEffectsOfHypoxiaOnEnergySubstrateUseDuringExerciseAM-OHARA.pdfTest |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....098c933928f1749b1229e234c7cf148e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15502783 |
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