NCT06308432

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.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
12

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Feb 2024

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

February 15, 2024

Completed
4 days until next milestone

Study Start

First participant enrolled

February 19, 2024

Completed
23 days until next milestone

First Posted

Study publicly available on registry

March 13, 2024

Completed
1 month until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 12, 2024

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

May 20, 2024

Completed
Last Updated

June 24, 2024

Status Verified

January 1, 2024

Enrollment Period

2 months

First QC Date

February 15, 2024

Last Update Submit

June 21, 2024

Conditions

Keywords

CyclistPerformanceTemperatureHumidity

Outcome Measures

Primary Outcomes (1)

  • Sweat

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

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

Secondary Outcomes (7)

  • Microcapillary Blood

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

  • Heart Rate

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

  • Fatigue

    Change of fatigue in six occasions (the first day, day 7, day, 14, day 21, day 28, day 35)

  • Temperature on the forehead

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

  • Temperature in the ear

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

  • +2 more secondary outcomes

Study Arms (6)

22 degrees, 40% humidity and 50% intensity

EXPERIMENTAL

The 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.

Other: Low intensityOther: Low temperatureOther: Low Humidity

35 degrees, 40% humidity and 50% intensity

EXPERIMENTAL

The 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.

Other: Low intensityOther: Low HumidityOther: High temperature

35 degrees, 65% humidity and 50% intensity

EXPERIMENTAL

The 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.

Other: Low intensityOther: High temperatureOther: High humidity

22 degrees, 40% humidity and 60% intensity

EXPERIMENTAL

The 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.

Other: Low temperatureOther: Low HumidityOther: High intensity

35 degrees, 40% humidity and 60% intensity

EXPERIMENTAL

The 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.

Other: Low HumidityOther: High intensityOther: High temperature

35 degrees, 65% humidity and 60% intensity

EXPERIMENTAL

The 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.

Other: High intensityOther: High temperatureOther: High humidity

Interventions

The subject will perform the 30-minute test at an intensity of 50% of the power at which he/she has reached his/her VO2max.

22 degrees, 40% humidity and 50% intensity35 degrees, 40% humidity and 50% intensity35 degrees, 65% humidity and 50% intensity

The performance test will be carried out in a room conditioned to a temperature of 22º.

22 degrees, 40% humidity and 50% intensity22 degrees, 40% humidity and 60% intensity

The performance test will be carried out in a room conditioned to 40% humidity.

22 degrees, 40% humidity and 50% intensity22 degrees, 40% humidity and 60% intensity35 degrees, 40% humidity and 50% intensity35 degrees, 40% humidity and 60% intensity

The subject will perform the 30-minute test at an intensity of 60% of the power at which he/she has reached his/her VO2max.

22 degrees, 40% humidity and 60% intensity35 degrees, 40% humidity and 60% intensity35 degrees, 65% humidity and 60% intensity

The performance test will be carried out in a room conditioned to a temperature of 35º.

35 degrees, 40% humidity and 50% intensity35 degrees, 40% humidity and 60% intensity35 degrees, 65% humidity and 50% intensity35 degrees, 65% humidity and 60% intensity

The performance test will be carried out in a room conditioned to 65% humidity.

35 degrees, 65% humidity and 50% intensity35 degrees, 65% humidity and 60% intensity

Eligibility Criteria

Age18 Years - 45 Years
Sexmale
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Male cyclists with more than two years of cycling experience.
  • Perform tests without fatigue.
  • Road bike training at least twice a week.

You may not qualify if:

  • 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.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Catholic University of Murcia

Murcia, 30107, Spain

Location

MeSH Terms

Interventions

Ultrasonic WavesCold TemperatureSLH1 protein, ArabidopsisDiathermy

Intervention Hierarchy (Ancestors)

SoundRadiation, NonionizingRadiationPhysical PhenomenaTemperatureThermodynamicsWeatherAtmosphereEnvironmentEcological and Environmental PhenomenaBiological PhenomenaMeteorological ConceptsEnvironment and Public HealthHyperthermia, InducedTherapeutics

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
INVESTIGATOR
Purpose
OTHER
Intervention Model
CROSSOVER
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

February 15, 2024

First Posted

March 13, 2024

Study Start

February 19, 2024

Primary Completion

April 12, 2024

Study Completion

May 20, 2024

Last Updated

June 24, 2024

Record last verified: 2024-01

Locations