Change search
ReferencesLink to record
Permanent link

Direct link
Muscle and cerebral oxygenation during exercise performance after short-term respiratory work
KTH, School of Technology and Health (STH), Environmental Physiology.
2011 (English)In: Respiratory Physiology & Neurobiology, ISSN 1569-9048, E-ISSN 1878-1519, Vol. 175, no 2, 247-254 p.Article in journal (Refereed) Published
Abstract [en]

The purpose of the study was to investigate the effect of 30-min voluntary hyperpnoea on cerebral, respiratory and leg muscle balance between 02 delivery and utilization during a subsequent constant-power test. Eight males performed a VO2max test, and two exercise tests at 85% of peak power output: (a) a control constant-power test (CPT), and (b) a constant-power test after a respiratory maneuver (CPTRM). Oxygenated (Delta[O(2)Hb]), deoxygenated (Delta[HHb]) and total (Delta[tHb]) hemoglobin in cerebral, intercostal and vastus lateralis were monitored with near-infrared spectroscopy. The performance time dropped similar to 15% in CPTRM (6:55 +/- 2:52 min) compared to CPT (8:03 +/- 2:33 min), but the difference was not statistically significant. The vastus lateral's and intercostal Delta[tHb] and Delta[HHb] were lower in CPTRM than in CPT (P <= 0.05). There were no differences in cerebral oxygenation between the trials. Thus, respiratory work prior to an exercise test influences the oxygenation during exercise in the leg and respiratory muscles, but not in the frontal cortex. (C) 2010 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
2011. Vol. 175, no 2, 247-254 p.
Keyword [en]
Isocapnic hyperpnoea, Respiratory muscle fatigue, NIRS, Dyspnoea
National Category
URN: urn:nbn:se:kth:diva-30982DOI: 10.1016/j.resp.2010.11.009ISI: 000287546200008ScopusID: 2-s2.0-79251636153OAI: diva2:402869
QC 20110310Available from: 2011-03-10 Created: 2011-03-07 Last updated: 2011-03-10Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Eiken, Ola
By organisation
Environmental Physiology
In the same journal
Respiratory Physiology & Neurobiology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 29 hits
ReferencesLink to record
Permanent link

Direct link