VO2 Kinetics and Metabolic Contributions Whilst Swimming at 95, 100, and 105% of the Velocity at VO2 max
Joint Authors
Vilas-Boas, João Paulo
Fernandes, Ricardo J.
Sousa, Ana C.
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-06-17
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
A bioenergetical analysis of swimming at intensities near competitive distances is inexistent.
It was aimed to compare the transient VO2 kinetics responses and metabolic contributions whilst swimming at different velocities around VO2max.
12 trained male swimmers performed (i) an incremental protocol to determine the velocity at VO2max (vVO2max) and (ii) three square wave exercises from rest to 95, 100, and 105% of vVO2max.
VO2 was directly measured using a telemetric portable gas analyser and its kinetics analysed through a double-exponential model.
Metabolic contributions were assessed through the sum of three energy components.
No differences were observed in the fast component response (τ1—15, 18, and 16 s, A1—36, 34, and 37 mL·kg-1·min-1, and Gain—32, 29, and 30 mL·min-1 at 95, 100, and 105% of the vVO2max, resp.) but A2 was higher in 95 and 100% compared to 105% intensity (480.76 ± 247.01, 452.18 ± 217.04, and 147.04 ± 60.40 mL·min-1, resp.).
The aerobic energy contribution increased with the time sustained (83 ± 5, 74 ± 6, and 59 ± 7% for 95, 100, and 105%, resp.).
The adjustment of the cardiovascular and/or pulmonary systems that determine O2 delivery and diffusion to the exercising muscles did not change with changing intensity, with the exception of VO2 slow component kinetics metabolic profiles.
American Psychological Association (APA)
Sousa, Ana C.& Vilas-Boas, João Paulo& Fernandes, Ricardo J.. 2014. VO2 Kinetics and Metabolic Contributions Whilst Swimming at 95, 100, and 105% of the Velocity at VO2 max. BioMed Research International،Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-489586
Modern Language Association (MLA)
Sousa, Ana C.…[et al.]. VO2 Kinetics and Metabolic Contributions Whilst Swimming at 95, 100, and 105% of the Velocity at VO2 max. BioMed Research International No. 2014 (2014), pp.1-9.
https://search.emarefa.net/detail/BIM-489586
American Medical Association (AMA)
Sousa, Ana C.& Vilas-Boas, João Paulo& Fernandes, Ricardo J.. VO2 Kinetics and Metabolic Contributions Whilst Swimming at 95, 100, and 105% of the Velocity at VO2 max. BioMed Research International. 2014. Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-489586
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-489586