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NCT Number: NCT01596543

The Effect of Partial and Complete Sleep Deprivation on Heat Tolerance

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.

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Key information

Conditions

Sleep Deprivation Dyssomnias Heat Stress Disorders Mental Disorders Nervous System Diseases Neurologic Manifestations Pathological Conditions, Signs and Symptoms Signs and Symptoms Sleep Wake Disorders Wounds and Injuries

Age range

18 year–30 year

Sex eligibility

Male

Study type

Interventional

Phase

Not applicable

Primary location

Heller Institute of Medical Research

Tel-Hashomer, Ramat-Gan, Israel

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

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

Exclusion criteria

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

Treatment and study plan

partial and complete sleep deprivation

Other

The subjects will visit our labs 4 times. The second visit will be used as the experimental control. During the third and fourth visits the subject will go through an exercise heat tolerance test and a measurement of their physiological efficiency after a partial and complete sleep deprivation, respectively.

Primary outcomes

  1. oxygen consumption

    Time frame: 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 outcomes

  1. Skin temperature

    Time frame: 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.

  2. Rectal temperature

    Time frame: 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.

  3. Heart rate

    Time frame: 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).

Sponsors and collaborators

Lead sponsor

Sheba Medical Center

Other Gov

Collaborators

  • International Diabetes Federation

Registry information

Official study title

Thr Effect of Partial and Complete Sleep Deprivation on Heat Tolerance

Important dates

Study start
2012
Primary completion
2013
Study completion
2014
First posted
May 11, 2012
Registry last updated
May 9, 2014

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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