The Effect of Partial and Complete Sleep Deprivation on Heat Tolerance

Not Applicable

Completed

• Conditions: Sleep Deprivation
• Interventions: Other: partial and complete sleep deprivation

• Registration Number: NCT01596543
• Lead Sponsor: Sheba Medical Center

Brief Summary

The purpose of the present study is to evaluate the effect of partial and complete sleep deprivation on exercise heat tolerance. Twelve healthy young male volunteers will participate in the study. They will arrive to our lab four times, in each visit the will undergo VO2 test and Heat Tolerance Test (HTT) after sleeping different amount of hours.

Detailed Description

The volunteers will arrive to our lab fout times- During their first visit they will go through a VO2 max test in order to evaluate their aerobic fitness, and their physiological efficiency will be measured. During their second visit they will go through an exercise heat tolerance test according to our validated protocol after a full night sleep. During the third and fourth visit they will go through an exercise heat tolerance test and a measurement of their physiological efficiency after a partial and complete sleep deprivation, respectively. The physiological tests will take place in the heat chamber that is located at the Heller Institute of Medical Research. The results will be then analyzed, and a comparison between the physiological measurements during the heat tolerance tests and the physiological efficiency tests after the various sleep conditions will be performed.

Basic Information
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Recruitment & Eligibility
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Study & Design
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Trial Locations

Study Timeline

• Study First Submitted: 2012-05-06
• Study First Submitted QC: 2012-05-09
• Study First Posted: 2012-05-11
• Study Start: 2012-11
• Primary Completion: 2013-12
• Status Verified: 2014-05
• Study Completion: 2014-05
• Last Update Submitted: 2014-05-08
• Last Update Posted: 2014-05-09

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Male
• Target Recruitment: 12

Inclusion Criteria

• age 18-30
• healthy
• after medical checkup
• after signing concent form

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Exclusion Criteria

• heart disease
• respiratory disease
• baseline bp above 140/90 mmHg
• sleep disorders
• diabetes
• anhydrosis
• skin disease
• acute illness

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
sleep deprivation	partial and complete sleep deprivation	The research contains only one arm. The subjects will be tested with no sleep deprivation (which will be used as a control measurement) and with partial and complete sleep deprivation.

Primary Outcome Measures

Name	Time	Method
oxygen consumption	experimental days 1,3,4	volunteer's oxygen consumption (VO2) will be monitored continuously with a metabolic chart (ZAN), while running for 10 min on a treadmill under comfortable environmental conditions.Each volunteer will undergo the test 4 times.

Secondary Outcome Measures

Name	Time	Method
Skin temperature	experimental days 2,3,4	The volunteers will undergo Heat Tolerance Test (HTT). Their skin temperature will be measured by skin thermistors and will be monitored continuously and viewed by the attending medical staff. Automatically all data will be recorded by the monitoring Biopac system.
Rectal temperature	experimental days 2,3,4	The volunteers will undergo heat tolerance test. Their rectal temperature will be measured by rectal thermistor and will be monitored continuously and viewed by the attending medical staff. Automatically all data will be recorded by the monitoring Biopac system.
Heart rate	experimental days 1,2,3,4	During the HTT (Heat Tolerance Test) and the VO2 test heart rates will be monitored continuously and will be stored by a heart rate wristwatch, (POLAR, Finland).

Trial Locations

Locations (1)

Heller Institute of Medical Research; 🇮🇱 Tel-Hashomer, Ramat-Gan, Israel