W ' expenditure and reconstitution during severe intensity constant power exercise: mechanistic insight into the determinants of W '

K-REx Repository

Show simple item record

dc.contributor.author Broxterman, R. M.
dc.contributor.author Skiba, P. F.
dc.contributor.author Craig, J. C.
dc.contributor.author Wilcox, S. L.
dc.contributor.author Ade, Carl J.
dc.contributor.author Barstow, Thomas J.
dc.date.accessioned 2017-11-30T21:48:22Z
dc.date.available 2017-11-30T21:48:22Z
dc.identifier.uri http://hdl.handle.net/2097/38377
dc.description Citation: Broxterman, R. M., Skiba, P. F., Craig, J. C., Wilcox, S. L., Ade, C. J., & Barstow, T. J. (2016). W ' expenditure and reconstitution during severe intensity constant power exercise: mechanistic insight into the determinants of W '. Physiological Reports, 4(19), 9. doi:10.14814/phy2.12856
dc.description.abstract The sustainable duration of severe intensity exercise is well-predicted by critical power (CP) and the curvature constant (W'). The development of the W-BAL' model allows for the pattern of W' expenditure and reconstitution to be characterized and this model has been applied to intermittent exercise protocols. The purpose of this investigation was to assess the influence of relaxation phase duration and exercise intensity on W' reconstitution during dynamic constant power severe intensity exercise. Six men (24.6 +/- 0.9 years, height: 173.5 +/- 1.9 cm, body mass: 78.9 +/- 5.6 kg) performed severe intensity dynamic handgrip exercise to task failure using 50% and 20% duty cycles. The W-BAL' model was fit to each exercise test and the time constant for W' reconstitution (tau(W)') was determined. The sW' was significantly longer for the 50% duty cycle (1640 +/- 262 sec) than the 20% duty cycle (863 +/- 84 sec, P = 0.02). Additionally, the relationship between sW' and CP was well described as an exponential decay (r(2) = 0.90, P < 0.0001). In conclusion, the W-BAL' model is able to characterize the expenditure and reconstitution of W' across the contraction-relaxation cycles comprising severe intensity constant power handgrip exercise. Moreover, the reconstitution of W' during constant power severe intensity exercise is influenced by the relative exercise intensity, the duration of relaxation between contractions, and CP.
dc.relation.uri https://doi.org/10.14814/phy2.12856
dc.rights Attribution 4.0 International (CC BY 4.0)
dc.rights.uri https://creativecommons.org/licenses/by/4.0/
dc.subject Critical Power
dc.subject Exercise Tolerance
dc.subject Modeling
dc.subject W '
dc.subject Blood-Flow Occlusion
dc.subject Duration Relationship
dc.title W ' expenditure and reconstitution during severe intensity constant power exercise: mechanistic insight into the determinants of W '
dc.type Article
dc.date.published 2016
dc.citation.doi 10.14814/phy2.12856
dc.citation.issn 2051-817X
dc.citation.issue 19
dc.citation.jtitle Physiological Reports
dc.citation.spage 9
dc.citation.volume 4
dc.contributor.authoreid cade
dc.contributor.authoreid tbarsto
dc.contributor.kstate Ade, Carl J.
dc.contributor.kstate Barstow, Thomas J.


Files in this item

This item appears in the following Collection(s)

Show simple item record

Attribution 4.0 International (CC BY 4.0) Except where otherwise noted, the use of this item is bound by the following: Attribution 4.0 International (CC BY 4.0)

Search K-REx


Advanced Search

Browse

My Account

Statistics








Center for the

Advancement of Digital

Scholarship

118 Hale Library

Manhattan KS 66506


(785) 532-7444

cads@k-state.edu