Influence of Ambient Temperature on Resting Energy Expenditure of Healthy Adults

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

32 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-11-21

Study Completion Date

2023-04-06

Brief Summary

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The aim of this study is to investigate the influence of four different ambient temperatures (18, 22, 28, 38°C) on the resting energy expenditure of healthy adults by respiratory gas analysis. It is assumed that the resting energy expenditure is higher at 18°C and 38°C than at the temperatures in between.

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Detailed Description

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In a crossover-design, 32 healthy men and women participate in four interventions. Each intervention includes a measurement of the resting energy expenditure by respiratory gas analysis at a different ambient temperature (18,22, 28 and 38°C). During this time body core- and surface temperature are assessed, as well as body composition via bioelectrical impedance analysis. For each participant the four individual study days take place in a randomized order on consecutive weekdays within a week.

Conditions

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Resting Energy Expenditure

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Cold temperature

18°C

Group Type EXPERIMENTAL

Respiratory analysis at cold temperature

Intervention Type OTHER

Respiratory analysis at an ambient temperature of 18°C

Room temperature

22°C

Group Type EXPERIMENTAL

Respiratory analysis at room temperature

Intervention Type OTHER

Respiratory analysis at an ambient temperature of 22°C

Thermoneutral temperature

28°C

Group Type EXPERIMENTAL

Respiratory analysis at thermoneutral temperature

Intervention Type OTHER

Respiratory analysis at an ambient temperature of 28°C

Hot temperature

38°C

Group Type EXPERIMENTAL

Respiratory analysis at hot temperature

Intervention Type OTHER

Respiratory analysis at an ambient temperature of 38°C

Interventions

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Respiratory analysis at cold temperature

Respiratory analysis at an ambient temperature of 18°C

Intervention Type OTHER

Respiratory analysis at room temperature

Respiratory analysis at an ambient temperature of 22°C

Intervention Type OTHER

Respiratory analysis at thermoneutral temperature

Respiratory analysis at an ambient temperature of 28°C

Intervention Type OTHER

Respiratory analysis at hot temperature

Respiratory analysis at an ambient temperature of 38°C

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* BMI: 18,5 - 24,9 kg/m2
* metabolically healthy

Exclusion Criteria

* smoking
* low or high blood pressure
* dyslipidemia
* insulin resistance or diabetes mellitus type 1 or type 2
* gastrointestinal diseases (e.g. food intolerances or allergies)
* liver, kidney and/or thyroid diseases
* hepatitis B or C, HIV Infection
* chronic inflammatory diseases
* disordered eating
* psychological diseases
* alcohol and/or drug abuse
* use of medication
* pregnancy or lactating
* participation in another intervention study
* women: irregular menstrual cycle
* more than 6 h of sports per week

Minimum Eligible Age

18 Years

Maximum Eligible Age

35 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes