Risk of Heat Stress Clinical Trial
Official title:
Effect of Aging and Aerobic Fitness Level on Heat Dissipation in Neutral Conditions
In the context of global aging, the health risk factors associated with exercising or working in the heat for aging population are exacerbated by the rising in global surface temperatures. The purpose of this investigation is to determine at what age the heat loss decrements occur and to examine if aerobic fitness level can affect the heat loss capacity in neutral environmental conditions.
All trials were conducted to indoor gyms with the same environmental temperature and relative
humidity, 26 - 30oC and 40-50% respectively, to ensure no difference in body temperature were
due to the external thermal stress. The participants were instructed to refrain from intense
exercise as well as alcohol and caffeine consumption for 24 hours prior to experimental trial
and to had a light meal 2h before their arrival.
Upon arrival, participants would have to wear running shoes, light and short running shorts
and light cotton socks. Participants received comprehensive instructions about the shuttle
run test and the whole process of measurements. Firstly participants answered the
International Physical Activity Questionnaire (IPAQ). Thereafter, anthropometrics data
(weight and height) were evaluated as well as the body temperature in external ear canal and
axillary. All participants followed five minutes warming up and then performed to 20 m
shuttle run test until their volitional limit. Once the participants could no longer run, the
test was over and the number of laps was recorded. After the end of the shuttle run, were
evaluated the body temperature and the weight of each participants. No fluids consumptions
were permitted until the second weighing. They were weighed twice, at baseline and at the end
of the running test with a precision weight scale (Kern DE 150K2D, KERN & SOHN GmbH,
Balingen, Germany).
Environmental data including air temperature and relative humidity were measured continuously
using a portable weather station (LCD Digital Temperature & Humidity Meter HTC-1). The
weather station was placed 1 meter above the ground according to the manufacturer's
guidelines.
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| Status | Clinical Trial | Phase | |
|---|---|---|---|
| Completed |
NCT04160728 -
Occupational Heat Stress on Workers' Productivity
|
N/A | |
| Completed |
NCT04197375 -
Impact of Pre-cooling in Adolescent Tennis Athletes
|
N/A |