In-play optimal cooling for outdoor match-play tennis in the heat

Takashi Naito*, Mariko Nakamura, Koji Muraishi, Nobuhiko Eda, Karina Ando, Ai Takemura, Nobuhiko Akazawa, Hiroshi Hasegawa, Hideyuki Takahashi

*この研究の対応する著者

研究成果: Article査読

2 被引用数 (Scopus)

抄録

The purpose of this study was to compare the efficacy of four cooling interventions used for reducing physiological and perceptual strain and improving exercise performance during outdoor match-play tennis in the heat. Eight competitive tennis players played four counter-balanced simulated outdoor matches in the heat (WBGT: 28.4–32.5°C) at 24- or 48-h intervals. Each match comprised 3 sets for which the “no-ad” rule was applied to limit duration variability. Players underwent the following cooling interventions: ad libitum fluid ingestion (CON), ad libitum fluid ingestion and ice vest (VEST), total ingestion of approximately 1000 g ice slurry and ice vest (Combined: BINE), or total ingestion of approximately 400 g ice slurry and ice vest (Low-combined: L-BINE). Gastrointestinal temperature was lower in the BINE and the L-BINE trials than in the CON trial at the set-break of set 1, and these differences in gastrointestinal temperature persisted throughout the remainder of the match (p < 0.05). The ratio of moderate-high intensity activity (≥10 km/h) in set 3 was significantly higher in the L-BINE trial than that in the BINE trial (p < 0.05). In the CON and BINE trials, high intensity activity was significantly lower in set 3 compared with set 1 and 2, respectively. Cooling by optimal ice slurry ingestion and ice vest may be a more effective strategy in mitigating the development of heat strain during outdoor match-play tennis in the heat. Highlights Cooling by optimal ice slurry ingestion and ice vest may be a more effective strategy in mitigating the development of heat strain during outdoor match-play tennis in the heat. Ingesting of large amounts ice slurry may be caused the bloating and stomach discomfort, in turn declined in the ratio of moderate-high intensity activity in the second half of match-play tennis in hot outdoor environments. Future studies should not only utilize match characteristics, but also measure on-court tennis specific performance.

本文言語English
ページ(範囲)326-335
ページ数10
ジャーナルEuropean Journal of Sport Science
22
3
DOI
出版ステータスPublished - 2022
外部発表はい

ASJC Scopus subject areas

  • 理学療法、スポーツ療法とリハビリテーション
  • 整形外科およびスポーツ医学

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