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The effect of preexercise meal composition on substrate oxidation during incremental cycling to exhaustion in recreationally active adults: randomized parallel pilot trial

cris.virtual.author-orcid0000-0002-9030-1805
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cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.author-orcid0000-0002-5041-2981
cris.virtualsource.author-orcidd9cad178-0d31-4dd0-a418-60d6ed7cfa5d
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid27a945b5-0dd6-465b-9459-95b0fa8038ea
dc.abstract.enPurpose The purpose of this study is to evaluate the effect of three different preexercise meals: high-carbohydrate, low-glycemic index (LGI), high-carbohydrate, high-GI (HGI) and low-carbohydrate high fat (LCHO) on substrate oxidation during an incremental cycling test (ICT) in recreationally active adults. Design/methodology/approach This was a parallel, randomized study in which participants ingested one of three meals (LGI, HGI or LCHO) 3 h prior to exercise testing. Testing included ICT to exhaustion with continuous ergospirometry measurement. Findings Fat oxidation rate was significantly higher in LCHO compared to HGI (p = 0.039). Carbohydrate contribution to energy production was significantly lower and fat contribution higher in LCHO compared to HGI (p = 0.034). Fat-to-carbohydrates crossover point was achieved at significantly higher heart rate in LCHO group compared to LGI and HGI (p = 0.046 and p = 0.049, respectively). Peak fat oxidation occurred significantly later during exercises in LCHO group compared to HGI (p = 0.025). In conclusion, LCHO meal results in a higher fat oxidation, reduced carbohydrates contribution-to-energy production, delayed peak fat oxidation point and altered fat-to-carbohydrates crossover dynamics. There are no differences in substrate oxidation between high-carbohydrate preexercise meals that differ only in GI. Originality/value To the best of the authors’ knowledge, this is the first study to compare the acute effect of both the amount of carbohydrates and the GI in a preexercise meal on substrate utilization during ICT.
dc.affiliationWydział Nauk o Żywności i Żywieniu
dc.affiliation.instituteKatedra Żywienia Człowieka i Dietetyki
dc.contributor.authorZawieja, Emilia
dc.contributor.authorPodgórski, Tomasz
dc.contributor.authorZanchi, Nelo Eidy
dc.contributor.authorDurkalec-Michalski, Krzysztof
dc.date.accessioned2024-12-11T10:41:33Z
dc.date.available2024-12-11T10:41:33Z
dc.date.issued2024
dc.description.abstract<jats:sec> <jats:title content-type="abstract-subheading">Purpose</jats:title> <jats:p>The purpose of this study is to evaluate the effect of three different preexercise meals: high-carbohydrate, low-glycemic index (LGI), high-carbohydrate, high-GI (HGI) and low-carbohydrate high fat (LCHO) on substrate oxidation during an incremental cycling test (ICT) in recreationally active adults.</jats:p> </jats:sec> <jats:sec> <jats:title content-type="abstract-subheading">Design/methodology/approach</jats:title> <jats:p>This was a parallel, randomized study in which participants ingested one of three meals (LGI, HGI or LCHO) 3 h prior to exercise testing. Testing included ICT to exhaustion with continuous ergospirometry measurement.</jats:p> </jats:sec> <jats:sec> <jats:title content-type="abstract-subheading">Findings</jats:title> <jats:p>Fat oxidation rate was significantly higher in LCHO compared to HGI (<jats:italic>p</jats:italic> = 0.039). Carbohydrate contribution to energy production was significantly lower and fat contribution higher in LCHO compared to HGI (<jats:italic>p</jats:italic> = 0.034). Fat-to-carbohydrates crossover point was achieved at significantly higher heart rate in LCHO group compared to LGI and HGI (<jats:italic>p</jats:italic> = 0.046 and <jats:italic>p</jats:italic> = 0.049, respectively). Peak fat oxidation occurred significantly later during exercises in LCHO group compared to HGI (<jats:italic>p</jats:italic> = 0.025). In conclusion, LCHO meal results in a higher fat oxidation, reduced carbohydrates contribution-to-energy production, delayed peak fat oxidation point and altered fat-to-carbohydrates crossover dynamics. There are no differences in substrate oxidation between high-carbohydrate preexercise meals that differ only in GI.</jats:p> </jats:sec> <jats:sec> <jats:title content-type="abstract-subheading">Originality/value</jats:title> <jats:p>To the best of the authors’ knowledge, this is the first study to compare the acute effect of both the amount of carbohydrates and the GI in a preexercise meal on substrate utilization during ICT.</jats:p> </jats:sec>
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.identifier.doi10.1108/NFS-08-2024-0265
dc.identifier.eissn1758-6917
dc.identifier.issn0034-6659
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/2201
dc.languageen
dc.relation.ispartofNutrition & Food Science
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.subject.enexercise metabolism
dc.subject.enfat oxidation
dc.subject.encarbohydrates oxidation
dc.subject.enmaximal fat oxidation
dc.subject.enpreexercise meal
dc.subject.englycemic index
dc.subject.enlow-carbohydration
dc.subtypeArticleEarlyAccess
dc.titleThe effect of preexercise meal composition on substrate oxidation during incremental cycling to exhaustion in recreationally active adults: randomized parallel pilot trial
dc.typeJournalArticle
dspace.entity.typePublication