Heat Illness
Conditions
Brief summary
CB (Chemical Biological)protective clothing provides a thermal resistance between the human body and its environment. CB protective clothing will be essential for combat soldiers in case of non conventional attacks. Lifebeam developed a new non invasive sensor for body core temperature detection. The research purpose is to evaluate the Lifebeam sensor during heat tolerance test while wearing CB protective clothing.
Interventions
DEVICELifebeam
The lifebeam sensor will be attached to the participant's skin during the HTT.
Sponsors
Sheba Medical Center
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
PREVENTION
Masking
NONE
Eligibility
Sex/Gender
MALE
Age
21 Years to 30 Years
Healthy volunteers
Yes
Inclusion criteria
* age 21-30 * 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 in last 3 days prior to the examination
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Heat tolerance test | 1 year | The test is performed in a climatic chamber at a temperature of 40oC and 40% relative humidity. During the test, the subject walks on a treadmill at a speed of 5 km/hr at a 2% grade for 2h. Body core temperature and heart rate are continuously monitored, and sweat rate is computed from body weight prior to and after the test, corrected for fluid intake. Heat intolerance is determined when body core temperature elevates above 38.5oC, when heart rate elevates above 150 bpm, or when either does not tend to reach a plateau. |
| VO2 test | 1 year | 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. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Skin temperature | 1 year | The volunteers will undergo heat tolerance test. 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 | 1 year | 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 | 1 year | During the HTT and the VO2 test heart rates will be monitored continuously and will be stored by a heart rate wristwatch, (POLAR, Finland). |
| blood circulation parameters | 1 year | Evaluation by the optic sensor Lifebeam of the blood circulation parameters (heart rate, blood flow velocity, perfusion, and ventilation rate) in the peripheral arterioles |
Countries
Israel
Contacts
Primary ContactBarliz Adato, MD
Outcome results
None listed