Impact of Ice Slurry Ingestion During Break-Times on Repeated-Sprint Exercise in the Heat.

Content Provider	Europe PMC
Author	Naito, Takashi Haramura, Miki Muraishi, Koji Yamazaki, Misa Takahashi, Hideyuki
Description	The study aimed to investigate the effects of ice slurry ingestion during break times and half-time (HT) on repeated-sprint performance and core temperature in the heat. Seven males performed two different trials as follows: ice slurry (−1°C) or room temperature water ingestion at each break and HT break at 36.5°C, 50% relative humidity. Participants performed 30 sets of 1-min periods of repeated- sprint exercises protocol using a cycling ergometer. Each period consisted of 5 sec of maximal pedaling, 25 sec of pedaling with no workload, and 30 sec of rest; two sets of exercise periods were separated by 10 min of rest. Each break was implemented for 1 min after every 5 sets. The rectal temperature in ice slurry ingestion was significantly lower than that of the room temperature water at 45 set (p=0.04). Total and mean work done was greater in ice slurry ingestion compared to room temperature water ingestion (p < 0.05). These results suggested that ice slurry ingestion during break times and HT break may be an effective cooling strategy to attenuate the rise of core temperature in the second half of exercise and improve the repeated-sprint exercise capacity in the heat.
Abstract	The study aimed to investigate the effects of ice slurry ingestion during breaktimes and half-time (HT) on repeated-sprint performance and core temperature inthe heat. Seven males performed two different trials as follows: ice slurry(−1°C) or room temperature water ingestion at each break and HTbreak at 36.5°C, 50% relative humidity. Participants performed30 sets of 1-min periods of repeated- sprint exercises protocol using a cyclingergometer. Each period consisted of 5 sec of maximal pedaling, 25 sec ofpedaling with no workload, and 30 sec of rest; two sets of exercise periods wereseparated by 10 min of rest. Each break was implemented for 1 min after every 5sets. The rectal temperature in ice slurry ingestion was significantly lowerthan that of the room temperature water at 45 set (p=0.04). Total andmean work done was greater in ice slurry ingestion compared to room temperaturewater ingestion (p < 0.05). These results suggested that ice slurryingestion during break times and HT break may be an effective cooling strategyto attenuate the rise of core temperature in the second half of exercise andimprove the repeated-sprint exercise capacity in the heat.
Related Links	https://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC7205515&blobtype=pdf
Volume Number	4
DOI	10.1055/a-1139-1761
PubMed Central reference number	PMC7205515
Issue Number	2
PubMed reference number	32395608
Journal	Sports Medicine International Open [Sports Med Int Open]
e-ISSN	23671890
Language	English
Publisher	© Georg Thieme Verlag KG
Publisher Date	2020-05-04
Publisher Place	Stuttgart · New York
Access Restriction	Open
Rights License	This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License, which permits unrestricted reproduction and distribution, for non-commercial purposes only; and use and reproduction, but not distribution, of adapted material for non-commercial purposes only, provided the original work is properly cited.
Subject Keyword	cooling rectal temperature work done forehead skin temperature perceptual sensations
Content Type	Text
Resource Type	Article
Subject	Medicine