NDLI: A new incremental test for VO2max accurate measurement by increasing VO2max plateau duration, allowing the investigation of its limiting factors

Content Provider	Springer Nature Link
Author	Petot, Hélène Meilland, Renaud Moyec, Laurence Mille Hamard, Laurence Billat, Véronique L.
Copyright Year	2011
Abstract	The purpose of this study was to (1) validate a new exercise protocol for accurate measurement of VO2max by obtention of a VO2max plateau for all subjects fit and unfit (2) test the hypothesis that VO2max plateau duration is not correlated with VO2max and (3) verify that limiting factors of VO2max plateau duration are different from those of VO2max amplitude. Therefore, 14 subjects performed two incremental cycling tests: (1) a classical incremental test (CIT) to determine VO2max, the power at VO2max (PVO2max) and at the lactate threshold (PLT) (2) a new incremental test (NIT) in which the power was decreased just after the subject reached VO2max. During both protocols, heart rate, stroke volume, cardiac output, the arterio-venous difference and the oxygen blood saturation were recorded. The results showed that, with the NIT, subject could maintain a long VO2max plateau (6 ± 3 min), even those who could not reach VO2max plateau at the end of CIT (n = 5). The VO2max plateau duration was not correlated with VO2max amplitude which was correlated with the power at SVmax (r = 0.888, p < 0.001). The VO2max plateau duration was correlated with the power decrease (W/s) during the VO2max plateau (r = −0.72, p = 0.003) but not with cardiac-related factors nor with PVO2max. In conclusion, these experiments showed that it was possible to get a long VO2max plateau at the end of NIT whatever the individual VO2max amplitude was. The limiting factor of VO2max duration was the power output.
Starting Page	2267
Ending Page	2276
Page Count	10
File Format	PDF
ISSN	14396319
Journal	European Journal of Applied Physiology
Volume Number	112
Issue Number	6
e-ISSN	14396327
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-10-14
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cycle ergometer Maximal power output Oxygen uptake Endurance Cardiac output Human Physiology Sports Medicine Occupational Medicine/Industrial Medicine
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Physiology (medical) Public Health, Environmental and Occupational Health Sports Science

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