A passive heat maintenance strategy implemented during a simulated half-time improves lower body power output and repeated sprint ability in professional Rugby Union players

PloS One
Mark RussellLiam P Kilduff

Abstract

Reduced physical performance has been observed following the half-time period in team sports players, likely due to a decrease in muscle temperature during this period. We examined the effects of a passive heat maintenance strategy employed between successive exercise bouts on core temperature (Tcore) and subsequent exercise performance. Eighteen professional Rugby Union players completed this randomised and counter-balanced study. After a standardised warm-up (WU) and 15 min of rest, players completed a repeated sprint test (RSSA 1) and countermovement jumps (CMJ). Thereafter, in normal training attire (Control) or a survival jacket (Passive), players rested for a further 15 min (simulating a typical half-time) before performing a second RSSA (RSSA 2) and CMJ's. Measurements of Tcore were taken at baseline, post-WU, pre-RSSA 1, post-RSSA 1 and pre-RSSA 2. Peak power output (PPO) and repeated sprint ability was assessed before and after the simulated half-time. Similar Tcore responses were observed between conditions at baseline (Control: 37.06±0.05°C; Passive: 37.03±0.05°C) and for all other Tcore measurements taken before half-time. After the simulated half-time, the decline in Tcore was lower (-0.74±0.08% vs. -1.54±0.06%, p<...Continue Reading

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Citations

Sep 21, 2017·European Journal of Applied Physiology·Emma J StevensonMark Russell
Jul 26, 2018·European Journal of Sport Science·Jeffrey William Frederick AldousLee Taylor
Feb 8, 2020·PloS One·Samuel P HillsMark Russell
Jul 28, 2018·Sports Medicine·Samuel P HillsMark Russell
Aug 21, 2018·Frontiers in Physiology·C Martyn BeavenChristian J Cook

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