The Impact of Heat Acclimation on Gastrointestinal Function following Endurance Exercise in a Hot Environment.

To determine the effects of heat acclimation on gastrointestinal (GI) damage and the gastric emptying (GE) rate following endurance exercise in a hot environment. Fifteen healthy men were divided into two groups: endurance training in hot (HOT, 35 °C, n = 8) or cool (COOL, 18 °C, n = 7) environment....

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Publicado en:Nutrients Vol. 15; no. 1; pp. 216 - 227
Autores principales: Sumi, Daichi, Nagatsuka, Haruna, Matsuo, Kaori, Okazaki, Kazunobu, Goto, Kazushige
Formato: research tables/charts Journal Article
Publicado: MDPI Jan2023
Acceso en línea:Ver este registro en EBSCOhost
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      dt: Jan2023
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        atl: The Impact of Heat Acclimation on Gastrointestinal Function following Endurance Exercise in a Hot Environment.
      aug:
        au:
          Sumi, Daichi
          Nagatsuka, Haruna
          Matsuo, Kaori
          Okazaki, Kazunobu
          Goto, Kazushige
        affil: Research Center for Urban Health and Sports, Osaka Metropolitan University, Osaka 558-8585, Japan
      sug:
        subj:
          Heat Adverse Effects
          Acclimatization
          Endurance Training
          Exercise Physiology
          Gastrointestinal System Physiopathology
          Human
          Body Temperature Regulation
          Experimental Studies
          Gastrointestinal Motility
          Descriptive Statistics
          Data Analysis Software
          Analysis of Variance
          Post Hoc Analysis
          Repeated Measures
          Male
          Young Adult
          Adult
          Adult: 19-44 years
          Male
      ab: To determine the effects of heat acclimation on gastrointestinal (GI) damage and the gastric emptying (GE) rate following endurance exercise in a hot environment. Fifteen healthy men were divided into two groups: endurance training in hot (HOT, 35 °C, n = 8) or cool (COOL, 18 °C, n = 7) environment. All subjects completed 10 days of endurance training (eight sessions of 60 min continuous exercise at 50% of the maximal oxygen uptake ( V · O 2 max ). Subjects completed a heat stress exercise tests (HST, 60 min exercise at 60% V · O 2 max ) to evaluate the plasma intestinal fatty acid-binding protein (I-FABP) level and the GE rate following endurance exercise in a hot environment (35 °C) before (pre-HST) and after (post-HST) the training period. We assessed the GE rate using the 13C-sodium acetate breath test. The core temperature during post-HST exercise decreased significantly in the HOT group compared to the pre-HST (p = 0.004) but not in the COOL group. Both the HOT and COOL groups showed exercise-induced plasma I-FABP elevations in the pre-HST (p = 0.002). Both groups had significantly attenuated exercise-induced I-FABP elevation in the post-HST. However, the reduction of exercise-induced I-FABP elevation was not different significantly between both groups. GE rate following HST did not change between pre- and post-HST in both groups, with no significant difference between two groups in the post-HST. Ten days of endurance training in a hot environment improved thermoregulation, whereas exercise-induced GI damage and delay of GE rate were not further attenuated compared with training in a cool environment.
      pubtype: Academic Journal
      doctype:
        research
        tables/charts
        Journal Article
      ougenre: Article
    language: English
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