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dc.contributor.authorTam, Enrico
dc.contributor.authorBruseghini, Paolo
dc.contributor.authorCapelli, Carlo
dc.contributor.authorOliboni, Eugenio
dc.contributor.authorPezzato, Andrea
dc.contributor.authorPogliaghi, Silvia
dc.contributor.authorMucelli, Roberto Pozzi
dc.contributor.authorSchena, Federico
dc.contributor.authorCalabria, Elisa
dc.date.accessioned2019-01-07T11:30:51Z
dc.date.available2019-01-07T11:30:51Z
dc.date.created2018-11-13T11:25:10Z
dc.date.issued2018
dc.identifier.citationFrontiers in Physiology. 2018, 9, 1353.nb_NO
dc.identifier.issn1664-042X
dc.identifier.urihttp://hdl.handle.net/11250/2579449
dc.description.abstractWe compared the effects of 8 weeks of high intensity, aerobic interval training (HIT) and isoinertial resistance training (IRT) on: (i) O2 kinetics during heavy (HiEx) intensity exercise and; (ii) work economy during moderate (ModEx) intensity exercise in 12 healthy elderly men (69.3 ± 4.2 years). Breath-by-breath O2 and muscle deoxygenation ([HHb] by means of NIRS) were measured in HiEx and ModEx at identical workloads before and after trainings. In HiEx, O2 and HHb responses were modeled as tri-exponential and mono-exponential increasing functions, respectively. A two-way ANOVA for repeated measures analysis was made; Effect size (η2) was also evaluated. After HIT the amplitude and the time delay of the slow component of O2 uptake (O2sc) during HiEx were smaller (−32%; P = 0.045) and longer (+19.5%; P = 0.001), respectively. At Post IRT: (i) during ModEx, gain was lower (−5%; P = 0.050); (ii) during HiEx, τ2 (+14.4%; P = 0.050), d3 (+8.6%; P = 0.050), and τ3 (+17.2%; P = 0.050) were longer than at Pre IRT. After HIT, the decrease of the O2sc amplitude was likely induced by the beneficial effects of training on a more responsive O2 delivery and consumption cascade leading to a better muscle metabolic stability. IRT training was able to increase exercise economy during ModEx and to reduce the amplitude and delay the onset of O2sc during HiEx. These effects should be due to the reduction and the delayed recruitment of Type II muscle fibers. The better exercise economy and the delayed appearance of O2sc induced by IRT suggests that strength training might be included in endurance training programs to improve exercise economy and resistance to fatigue in this population of old subjects.nb_NO
dc.language.isoengnb_NO
dc.subjecthigh intensity interval trainingnb_NO
dc.subjectisoinertial strength trainingnb_NO
dc.subjectheavy intensity exercisenb_NO
dc.subjectnear-infrared spectroscopynb_NO
dc.subjectoxygen uptake kineticsnb_NO
dc.subjectelderlynb_NO
dc.subjectmuscle strengthnb_NO
dc.subjectslow componentnb_NO
dc.titleEffect of Endurance and Strength Training on the Slow Component of VO2 Kinetics in Elderly Humansnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.rights.holder© 2018 Tam, Bruseghini, Capelli, Oliboni, Pezzato, Pogliaghi, Pozzi Mucelli, Schena and Calabria. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.nb_NO
dc.source.journalFrontiers in Physiologynb_NO
dc.identifier.doi10.3389/fphys.2018.01353
dc.identifier.cristin1629852
dc.description.localcodeSeksjon for fysisk prestasjonsevne / Department of Physical Performancenb_NO
cristin.unitcode150,31,0,0
cristin.unitnameSeksjon for fysisk prestasjonsevne
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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