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dc.contributor.authorvan Erck, Dennis
dc.contributor.authorWenker, Eric J.
dc.contributor.authorLevels, Koen
dc.contributor.authorFoster, Carl
dc.contributor.authorDe Koning, Jos J.
dc.contributor.authorNoordhof, Dionne
dc.date.accessioned2021-03-08T12:03:52Z
dc.date.available2021-03-08T12:03:52Z
dc.date.created2019-09-17T09:59:05Z
dc.date.issued2019
dc.identifier.citationInternational Journal of Sports Physiology and Performance (IJSPP). 2019, 14 (8), 1117-1123.en_US
dc.identifier.issn1555-0265
dc.identifier.urihttps://hdl.handle.net/11250/2732151
dc.description.abstractBackground: Although cyclists often compete at altitude, the effect of altitude on gross efficiency (GE) remains inconclusive. Purpose: To investigate the effect of altitude on GE at the same relative exercise intensity and at the same absolute power output (PO) and to determine the effect of altitude on the change in GE during high-intensity exercise. Methods: Twenty-one trained men performed 3 maximal incremental tests and 5 GE tests at sea level, 1500 m, and 2500 m of acute simulated altitude. The GE tests at altitude were performed once at the same relative exercise intensity and once at the same absolute PO as at sea level. Results: Altitude resulted in an unclear effect at 1500 m (−3.8%; ±3.3% [90% confidence limit]) and most likely negative effect at 2500 m (−6.3%; ±1.7%) on pre-GE, when determined at the same relative exercise intensity. When pre-GE was determined at the same absolute PO, unclear differences in GE were found (−1.5%; ±2.6% at 1500 m; −1.7%; ±2.4% at 2500 m). The effect of altitude on the decrease in GE during high-intensity exercise was unclear when determined at the same relative exercise intensity (−0.4%; ±2.8% at 1500 m; −0.7%; ±1.9% at 2500 m). When GE was determined at the same absolute PO, altitude resulted in a substantially smaller decrease in GE (2.8%; ±2.4% at 1500 m; 5.5%; ±2.9% at 2500 m). Conclusion: The lower GE found at altitude when exercise is performed at the same relative exercise intensity is mainly caused by the lower PO at which cyclists exerciseen_US
dc.language.isoengen_US
dc.publisherHuman Kineticsen_US
dc.titleCycling at Altitude: Lower Absolute Power Output as the Main Cause of Lower Gross Efficiencyen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionacceptedVersionen_US
dc.source.pagenumber1117-1123en_US
dc.source.volume14en_US
dc.source.journalInternational Journal of Sports Physiology and Performance (IJSPP)en_US
dc.source.issue8en_US
dc.identifier.doi10.1123/ijspp.2018-0221
dc.identifier.cristin1725481
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


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