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dc.contributor.authorSabapathy, Surendranen_US
dc.contributor.authorMorris, Normanen_US
dc.contributor.authorSchneider, Donalden_US
dc.contributor.editorCaroline Finchen_US
dc.date.accessioned2017-04-24T10:25:28Z
dc.date.available2017-04-24T10:25:28Z
dc.date.issued2006en_US
dc.identifier.issn1440-2440en_US
dc.identifier.doi10.1016/j.jsams.2006.03.024en_US
dc.identifier.urihttp://hdl.handle.net/10072/14282
dc.description.abstractThis study examined the relationship between minute ventilation (VE), CO2 production (VCO2), and blood lactate concentration ([La-]) during incremental exercise performed with reduced muscle glycogen stores. Nine untrained female subjects (25.3 ᠴ.2 year) performed incremental cycling in a normal glycogen (NG) state and under conditions of reduced muscle glycogen (RG) content. To reduce muscle glycogen stores, subjects cycled to exhaustion (124 ᠳ3 min) at a power output corresponding to their gas-exchange anaerobic threshold. Peak oxygen uptake (VO2peak) was unchanged with glycogen reduction, even though subjects achieved a significantly lower maximal power output in the RG state (p < 0.05). Peak blood [La-] decreased significantly by 37% in the RG state (p < 0.001). At any percentage of VO2peak, O2 uptake and VE were similar for both treatment conditions, whereas VCO2 and respiratory exchange ratio values were lower during the RG trial than under NG conditions. Therefore, VE/VCO2 tended to be higher and end-tidal CO2 partial pressure tended to be lower during exercise performed in the RG state. VE was significantly correlated with VCO2 under both treatment conditions (NG: r = 0.99, p < 0.01; RG: r = 0.99, p < 0.01). However, the slope of the VE-VCO2 relationship was significantly elevated during the RG trial (p < 0.01). VE during exercise was similar under both treatment conditions, even though VCO2 and blood [La-] were lower during the RG trial compared to the NG trial. This suggests that factors other than CO2 delivery to the lung and metabolic acidosis play an important role in regulating during exercise.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_US
dc.languageEnglishen_US
dc.language.isoen_US
dc.publisherElsevieren_US
dc.publisher.placeAustraliaen_US
dc.relation.ispartofstudentpublicationNen_US
dc.relation.ispartofpagefrom267en_US
dc.relation.ispartofpageto273en_US
dc.relation.ispartofissue3en_US
dc.relation.ispartofjournalJournal of Science and Medicine in Sporten_US
dc.relation.ispartofvolume9en_US
dc.rights.retentionNen_US
dc.subject.fieldofresearchcode321401en_US
dc.titleVentilatory and gas-exchange responses to incremental exercise performed with reduced muscle glycogen contenten_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.date.issued2015-05-15T04:37:38Z
gro.hasfulltextNo Full Text


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