Prior upper body exercise reduces cycling work capacity but not critical power
Article
Article Title | Prior upper body exercise reduces cycling work capacity but not critical power |
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ERA Journal ID | 9788 |
Article Category | Article |
Authors | Johnson, Michael A. (Author), Mills, Dean E. (Author), Brown, Peter I. (Author) and Sharpe, Graham R. (Author) |
Journal Title | Medicine and Science in Sports and Exercise |
Journal Citation | 46 (4), pp. 802-808 |
Number of Pages | 7 |
Year | 2014 |
Publisher | Lippincott Williams & Wilkins |
Place of Publication | United States |
ISSN | 0195-9131 |
1530-0315 | |
Digital Object Identifier (DOI) | https://doi.org/10.1249/MSS.0000000000000159 |
Web Address (URL) | https://journals.lww.com/acsm-msse/Fulltext/2014/04000/Prior_Upper_Body_Exercise_Reduces_Cycling_Work.21.aspx |
Abstract | Purpose: This study examined whether metabolite accumulation, induced by prior upper body exercise, affected the power–duration relationship for leg cycle ergometry. Methods: Seven males performed, to the limit of tolerance and both without (L) and with (AL) prior severe-intensity arm-cranking exercise, an incremental cycling test and four constant power cycling tests to determine the parameters of the power–duration relationship: critical power (CP) and W'. Results: At the onset of cycling exercise plasma lactate (L vs AL: 1.2 ± 0.1 vs 11.6 ± 2.9 mEq.L -1) and hydrogen ion (40.4 ± 1.3 vs 53.1 ± 4.3 nEq.L -1), concentrations were higher during AL compared with L, whereas the strong ion difference (37.8 ± 1.8 vs 32.4 ± 2.0 mEq.L -1) and bicarbonate concentration (25.7 ± 0.7 vs 18.3 ± 1.9 mEq.L -1) were lower during AL compared with L (P <0.01). During incremental exercise, maximum cycling power (358 ± 15 vs 332 ± 21 W) and peak oxygen uptake (VO2peak) (4.31 ± 0.36 vs 3.71 ± 0.44 L.min -1) were lower during AL compared with L (P <0.05). The rate of increase in plasma potassium concentration during constant power cycling was greater during AL compared with L (0.09 ± 0.08 vs 0.14 ± 0.13 mEq.L -1.min -1) (P <0.05), and exercise duration was 35 ± 15% shorter (P <0.01). CP was not different between L and AL (267± 19 vs 264 ± 20 W), whereas W' was lower in AL (17.3 ± 5.7 vs 11.8 ± 4.2 kJ) (P <0.01). Conclusion: The reduced W' after prior upper body exercise indicates that the magnitude of W' is partly dependent on metabolite accumulation. |
Keywords | power-duration relationship; metabolites, arm cranking; cycling |
ANZSRC Field of Research 2020 | 420702. Exercise physiology |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Nottingham Trent University, United Kingdom |
University of Derby, United Kingdom | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q35q6/prior-upper-body-exercise-reduces-cycling-work-capacity-but-not-critical-power
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