TY - JOUR
T1 - The effect of remote ischemic preconditioning at moderate- And high-intensity steady-state cycling exercise amongst amateur athletes
AU - Caru, Maxime
AU - Lalonde, François
AU - Daigle, Chantal
AU - Comtois, Alain S.
AU - Curnier, Daniel
N1 - Funding Information:
Conflicts of interest.—The authors certify that there is no conflict of interest with any financial organization regarding the material discussed in the manuscript. Funding.—François Lalonde has received a PhD grant from the Department of Kinesiology and the Faculty of Graduate and Postdoctoral Studies of the University of Montreal, and a scholarship from the Desjardins Movement. Acknowledgements.—The authors would like to give special thanks to Yves Lalonde, MSc and senior statistician, for his assistance with the power analysis. Also, the authors have appreciated the assistance of Ariane Levesque (McGill University), who reviewed the article in the English language. Manuscript accepted: June 11, 2019. - Manuscript received: March 20, 2019.
Funding Information:
Fran?ois Lalonde has received a PhD grant from the Department of Kinesiology and the Faculty of Graduate and Postdoctoral Studies of the University of Montreal, and a scholarship from the Desjardins Movement. The authors would like to give special thanks to Yves Lalonde, MSc and senior statistician, for his assistance with the power analysis. Also, the authors have appreciated the assistance of Ariane Levesque (McGill University), who reviewed the article in the English language.
Publisher Copyright:
© 2019 Edizioni Minerva Medica. All rights reserved.
PY - 2019
Y1 - 2019
N2 - BACKGROUND: Remote ischemic preconditioning (RIPC) is increasingly being adopted by athletes for its potential to enhance sports performance. However, the effect of a RIPC intervention on a constant oxygen uptake response during steady-state exercise (at moderate to high intensity) remains unknown. Thus, the aim of this study was to measure the effect of RIPC interventions applied on the right arm on the oxygen uptake response during a moderate and high-intensity steady-state cycling exercise. METHODS: In a randomized crossover study, 15 subjects underwent two steady-state exercise tests at 75% and 115% of their determined gas exchange threshold (GET). Prior to the steady-state exercise test, they were randomized to either control (CTL) or RIPC intervention with four cycles of 5 minutes of ischemia followed by 5 minutes of reperfusion. Five minutes after the RIPC intervention the oxygen uptake response during the steady-state exercise test was analyzed. RESULTS: Data analysis during steady-state exercise test, when compared to a CTL intervention, showed no significant difference. The A1 parameter in the mono-exponential model (75% of GET) was not significantly different between the CTL (1.2±0.3 L/min) and RIPC intervention (1.1±0.3 L/min). A similar analysis in the A2 parameter in the bi-exponential model (115% of GET) was performed between the CTL (0.4±0.2 L/min) and RIPC intervention (0.5±0.2 L/min). Secondary data analysis showed that at 75% of GET, τ1 was significantly faster (P<0.001) for RIPC intervention (27.2±4.6 s) than for CTL intervention (33.7±6.2 s) and at 115% of GET, τ1 for RIPC intervention (29.9±4.9 s) was also significantly quicker (P<0.01) than CTL intervention (33.5±4.1 s), but to a lesser extent. CONCLUSIONS: RIPC intervention does not seem to have any direct effect on the oxidative metabolism when compared to a CTL intervention but could promote better oxygen uptake within the working muscle at steady state.
AB - BACKGROUND: Remote ischemic preconditioning (RIPC) is increasingly being adopted by athletes for its potential to enhance sports performance. However, the effect of a RIPC intervention on a constant oxygen uptake response during steady-state exercise (at moderate to high intensity) remains unknown. Thus, the aim of this study was to measure the effect of RIPC interventions applied on the right arm on the oxygen uptake response during a moderate and high-intensity steady-state cycling exercise. METHODS: In a randomized crossover study, 15 subjects underwent two steady-state exercise tests at 75% and 115% of their determined gas exchange threshold (GET). Prior to the steady-state exercise test, they were randomized to either control (CTL) or RIPC intervention with four cycles of 5 minutes of ischemia followed by 5 minutes of reperfusion. Five minutes after the RIPC intervention the oxygen uptake response during the steady-state exercise test was analyzed. RESULTS: Data analysis during steady-state exercise test, when compared to a CTL intervention, showed no significant difference. The A1 parameter in the mono-exponential model (75% of GET) was not significantly different between the CTL (1.2±0.3 L/min) and RIPC intervention (1.1±0.3 L/min). A similar analysis in the A2 parameter in the bi-exponential model (115% of GET) was performed between the CTL (0.4±0.2 L/min) and RIPC intervention (0.5±0.2 L/min). Secondary data analysis showed that at 75% of GET, τ1 was significantly faster (P<0.001) for RIPC intervention (27.2±4.6 s) than for CTL intervention (33.7±6.2 s) and at 115% of GET, τ1 for RIPC intervention (29.9±4.9 s) was also significantly quicker (P<0.01) than CTL intervention (33.5±4.1 s), but to a lesser extent. CONCLUSIONS: RIPC intervention does not seem to have any direct effect on the oxidative metabolism when compared to a CTL intervention but could promote better oxygen uptake within the working muscle at steady state.
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U2 - 10.23736/S0025-7826.19.03508-7
DO - 10.23736/S0025-7826.19.03508-7
M3 - Article
AN - SCOPUS:85079719764
SN - 0025-7826
VL - 72
SP - 317
EP - 330
JO - Medicina dello Sport
JF - Medicina dello Sport
IS - 3
ER -