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Viktor Bay Moseholm1, Hugin Reistrup1, Jacob Rosenberg1

  • 1Center for Perioperativ Optimering, Afdeling for Mave-, Tarm- og Leversygdomme, Københavns Universitetshospital - Herlev Hospital.

Ugeskrift for Laeger
|December 12, 2023
PubMed
Summary

Drinking warm or cold tea in hot weather did not affect thermal well-being. Researchers noted mood decline over time, but this was not clinically significant.

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Area of Science:

  • Environmental Health
  • Human Physiology
  • Thermal Comfort Studies

Background:

  • Limited research exists on thermal well-being in hot environments concerning beverage temperature.
  • Previous studies focused on the cooling effects of warm beverages, not overall comfort in heat.

Purpose of the Study:

  • To investigate the relationship between beverage temperature and thermal well-being in a warm environment.
  • To assess the impact of drinking warm versus cold tea on comfort and mood in heat.

Main Methods:

  • A double-blinded, randomized crossover study involving 30 researchers.
  • Participants consumed 10°C and 50°C decaffeinated tea in Turkish summer heat.
  • Well-being assessed using standardized scales including ASHRAE, Bedford, BMIS, and EQ-5D-5L.

Main Results:

  • No significant differences in thermal well-being were found between warm and cold tea consumption.
  • Participant mood significantly declined over the trial duration (p=0.03).
  • Perceived comfort in heat improved slightly (p<0.001), but changes were not clinically significant.

Conclusions:

  • Beverage temperature showed no correlation with thermal comfort in a hot environment.
  • Extended experimental durations may negatively impact participant mood.
  • Further research is needed to explore factors influencing thermal comfort in heat.

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