MedPath

Sweat Rate Measurement With a Sensor (Wearable) in Different Climatic Conditions With Road Cyclists.

Not Applicable
Completed
Conditions
Sweat
Interventions
Other: Low intensity
Other: Low temperature
Other: Low Humidity
Other: High temperature
Other: High humidity
Other: High intensity
Registration Number
NCT06308432
Lead Sponsor
Universidad Católica San Antonio de Murcia
Brief Summary

Controlled, double-blind, crossover clinical trial with six parallel arms depending on the combination of temperature and humidity (22º and 40% humidity, 35º 40% humidity and 35º and 65% humidity), with two differents intensity, to investigate and validate the physiological use of a sensor in recreational road cyclists.

Detailed Description

Subjects who meet the inclusion criteria will be recruited to participate in the clinical trial and perform the exercise sessions.

The cyclists in the study will have to make 7 visits to the laboratory. At the first visit, their aerobic performance will be evaluated by an incremental test to exhaustion with gas analysis. And in the next 6 visits they will have to perform a sustained intensity exercise with different environmental conditions according to the combination of temperature, humidity and intensity.

Recruitment & Eligibility

Status
COMPLETED
Sex
Male
Target Recruitment
12
Inclusion Criteria
  • Male cyclists with more than two years of cycling experience.
  • Perform tests without fatigue.
  • Road bike training at least twice a week.
Exclusion Criteria
  • Participants with chronic illness.
  • Have a long-term injury that prevents you from training in the previous month.
  • Inability to understand informed consent.
  • Use of diuretics in the month prior to or during the measurement period.

Study & Design

Study Type
INTERVENTIONAL
Study Design
CROSSOVER
Arm && Interventions
GroupInterventionDescription
35 degrees, 65% humidity and 50% intensityHigh humidityThe room in which the 30-minute test will be performed will be at 35 degrees Celsius and 65% humidity. The subject should perform the test at 50% of the power at which he reached his VO2max.
35 degrees, 65% humidity and 50% intensityLow intensityThe room in which the 30-minute test will be performed will be at 35 degrees Celsius and 65% humidity. The subject should perform the test at 50% of the power at which he reached his VO2max.
22 degrees, 40% humidity and 60% intensityHigh intensityThe room in which the 30-minute test will be performed will be at 22 degrees Celsius and 40% humidity. The subject should perform the test at 60% of the power at which he reached his VO2max.
35 degrees, 40% humidity and 50% intensityLow HumidityThe room in which the 30-minute test will be performed will be at 35 degrees Celsius and 40% humidity. The subject should perform the test at 50% of the power at which he reached his VO2max.
22 degrees, 40% humidity and 50% intensityLow intensityThe room in which the 30-minute test will be performed will be at 22 degrees Celsius and 40% humidity. The subject should perform the test at 50% of the power at which he reached his VO2max.
22 degrees, 40% humidity and 50% intensityLow HumidityThe room in which the 30-minute test will be performed will be at 22 degrees Celsius and 40% humidity. The subject should perform the test at 50% of the power at which he reached his VO2max.
35 degrees, 40% humidity and 50% intensityLow intensityThe room in which the 30-minute test will be performed will be at 35 degrees Celsius and 40% humidity. The subject should perform the test at 50% of the power at which he reached his VO2max.
35 degrees, 65% humidity and 60% intensityHigh intensityThe room in which the 30-minute test will be performed will be at 35 degrees Celsius and 65% humidity. The subject should perform the test at 60% of the power at which he reached his VO2max.
35 degrees, 65% humidity and 60% intensityHigh temperatureThe room in which the 30-minute test will be performed will be at 35 degrees Celsius and 65% humidity. The subject should perform the test at 60% of the power at which he reached his VO2max.
22 degrees, 40% humidity and 60% intensityLow temperatureThe room in which the 30-minute test will be performed will be at 22 degrees Celsius and 40% humidity. The subject should perform the test at 60% of the power at which he reached his VO2max.
22 degrees, 40% humidity and 60% intensityLow HumidityThe room in which the 30-minute test will be performed will be at 22 degrees Celsius and 40% humidity. The subject should perform the test at 60% of the power at which he reached his VO2max.
35 degrees, 40% humidity and 60% intensityHigh temperatureThe room in which the 30-minute test will be performed will be at 35 degrees Celsius and 40% humidity. The subject should perform the test at 60% of the power at which he reached his VO2max.
22 degrees, 40% humidity and 50% intensityLow temperatureThe room in which the 30-minute test will be performed will be at 22 degrees Celsius and 40% humidity. The subject should perform the test at 50% of the power at which he reached his VO2max.
35 degrees, 40% humidity and 50% intensityHigh temperatureThe room in which the 30-minute test will be performed will be at 35 degrees Celsius and 40% humidity. The subject should perform the test at 50% of the power at which he reached his VO2max.
35 degrees, 65% humidity and 50% intensityHigh temperatureThe room in which the 30-minute test will be performed will be at 35 degrees Celsius and 65% humidity. The subject should perform the test at 50% of the power at which he reached his VO2max.
35 degrees, 40% humidity and 60% intensityLow HumidityThe room in which the 30-minute test will be performed will be at 35 degrees Celsius and 40% humidity. The subject should perform the test at 60% of the power at which he reached his VO2max.
35 degrees, 65% humidity and 60% intensityHigh humidityThe room in which the 30-minute test will be performed will be at 35 degrees Celsius and 65% humidity. The subject should perform the test at 60% of the power at which he reached his VO2max.
35 degrees, 40% humidity and 60% intensityHigh intensityThe room in which the 30-minute test will be performed will be at 35 degrees Celsius and 40% humidity. The subject should perform the test at 60% of the power at which he reached his VO2max.
Primary Outcome Measures
NameTimeMethod
SweatChange of baseline rate of sweet rate in six occasions (the first day, day 7, day, 14, day 21, day 28, day 35)

The amount of sweat will be measured by a sensor placed on the back.

Secondary Outcome Measures
NameTimeMethod
FatigueChange of fatigue in six occasions (the first day, day 7, day, 14, day 21, day 28, day 35)

Rate of perceived exertion using Borg scale. En esta escala 0 representa nada fatigado y el 10 esfuerzo máximo.

Microcapillary BloodChange of baseline rate of sweet rate in six occasions (the first day, day 7, day, 14, day 21, day 28, day 35)

By means of a lancet puncture in the thumb of the finger, 70 ml of capillary blood will be extracted.This test provides biochemical variables (ABL90FLEX) with 70 ml of capillary blood.

Heart RateChanges of heart rate in six occasions (the first day, day 7, day, 14, day 21, day 28, day 35)

The heart rate will be evaluated by means of a heart rate strap.

Temperature on the foreheadChanges in Temperature on the forehead in six occasions (the first day, day 7, day, 14, day 21, day 28, day 35)

The temperature will be measured by an infrared thermometer.

Temperature in the earChanges in Temperature in the ear in six occasions (the first day, day 7, day, 14, day 21, day 28, day 35)

The temperature will be measured by ear thermometer.

Karolinska drowsiness scaleIt will be measured the day after in six occasions (the first day, day 7, day, 14, day 21, day 28, day 35)

Measured by Karolinska test

Sleep efficiencyChanges in the sleep efficiency in six occasions (the first day, day 7, day, 14, day 21, day 28, day 35)

Measured by accelerometry, with Actigraph wGT3X-BT

Trial Locations

Locations (1)

Catholic University of Murcia

🇪🇸

Murcia, Spain

© Copyright 2025. All Rights Reserved by MedPath