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Upper Body Compression Garment: Physiological Effects While Cycling in a Hot Environment.

Iker Leoz-Abaurrea1, Roberto Aguado-Jiménez1

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Wilderness & Environmental Medicine
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Wearing an upper body compression garment (UBCG) during cycling in heat increases physiological strain, including higher core body temperature and heart rate. This garment offers no recovery benefits and may worsen heat stress for cyclists.

Keywords:
cyclingexercise in the heatheat stresshyperthermiathermoregulation

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Area of Science:

  • Exercise Physiology
  • Environmental Physiology
  • Sports Science

Background:

  • Athletes often use compression garments for performance enhancement.
  • The effects of upper body compression garments (UBCG) in hot environments are not well understood.
  • Heat stress significantly impacts cycling performance and physiological responses.

Purpose of the Study:

  • To examine the physiological and perceptual effects of wearing a UBCG during cycling in a hot environment.
  • To compare the responses of cyclists wearing UBCG versus a conventional t-shirt.

Main Methods:

  • Twenty recreational cyclists were pair-matched and randomly assigned to UBCG or control (CON) groups.
  • Participants cycled at ~50% V̇O2max for 30 minutes in ~40°C ambient temperature.
  • Physiological (rectal temperature, heart rate) and perceptual (thermal sensation) data were collected during exercise and recovery.

Main Results:

  • The UBCG group exhibited significantly higher rectal temperature and heart rate at the end of exercise compared to the CON group.
  • Participants in the UBCG group reported significantly greater thermal sensation.
  • Elevated heart rate and rectal temperature persisted in the UBCG group during the recovery period.

Conclusions:

  • Upper body compression garments increase cardiovascular and thermoregulatory strain during cycling in hot conditions.
  • UBCG use does not appear to aid in recovery following exercise in the heat.
  • Athletes should consider the potential for increased heat stress when using UBCGs in hot environments.