Research Repository

The use of acute oxygen supplementation upon muscle tissue saturation during repeat sprint cycling

Porter, Michael Stewart and Reed, Kate and Jones, Ben (2020) 'The use of acute oxygen supplementation upon muscle tissue saturation during repeat sprint cycling.' Journal of Human Sport and Exercise, 17 (1). ISSN 1988-5202

[img]
Preview
Text
JHSE_17-1_InPress_10 (1).pdf - Published Version
Available under License Creative Commons Attribution Non-commercial No Derivatives.

Download (391kB) | Preview

Abstract

This study examined performance and physiological responses (power output, tissue saturation index) to repeat sprint cycling with oxygen supplementation (O2Supp [fraction of inspired oxygen 1.00]). Fourteen amateur male cyclists took part. Two visits to the laboratory entailed; 15min relative intensity warm-up, 10min of passive recovery, followed by 10x15s repeated sprints, during which air inspired had FiO21.00 oxygen or normal air. Outcome measures include, mean power (W) and change in Tissue Saturation Index (ΔTSI%). Repeated measures ANOVA were used to examine difference between conditions in mean power output. Paired samples t-tests were used to examine differences between conditions in ΔTSI (%) and rate of muscle reoxygenation and deoxygenation (%·s-1). Mean power output was 4% higher in the oxygen condition compared to normoxia (p<.01). There was a significant positive correlation between power output and reoxygenation rate during O2Supp (r=0.65, p=.04). No correlation was seen between power output and reoxygenation rate during normoxia (r=-0.30, p=.40). A significantly increased deoxy rate was seen in the O2Supp condition compared to normoxia (p=.05). Oxygen supplementation appears to elicit the greatest performance improvements in mean power, potentially facilitated by an increasing muscle reoxygenation rate. This evidences the utility of oxygen as an ergogenic aid to in cycling performance.

Item Type: Article
Divisions: Faculty of Science and Health > Sport, Rehabilitation and Exercise Sciences, School of
Depositing User: Elements
Date Deposited: 23 Sep 2020 15:32
Last Modified: 01 Oct 2020 10:15
URI: http://repository.essex.ac.uk/id/eprint/28570

Actions (login required)

View Item View Item