Physiological Stress
Conditions
Keywords
stress when dressed, protective garment, work clothes
Brief summary
Using protective or combat garments under heavy heat stress conditions, during rest or exertion, may hinder the body's ability to effectively exchange heat with the environment and thereby can lead to heat injuries. The purpose of this research is to physiologically examine the new textile solutions that are planned to be integrated in the protective garments, combat garments and work uniforms in the army, by evaluating the physiological stress obtained during exertion under hot climatic conditions.
Detailed description
10 young, healthy civilian volunteers will participate in this study. After reading and signing an informed consent form, all subjects will undergo medical examination which includes ECG, anthropometric measurements and Vo2max test. Afterwards, the subjects will perform 6 acclimatization days carried out by the standard protocol of Heat Tolerance Test (HTT). After acclimatization, the subjects will undergo 4 experiment days under heavy heat stress in a climatic chamber, dressed in each experiment day with one out of 4 clothing combinations (NBC protective garment \[charcoal base\], combat garment and 2 different types of work uniforms). Physiological stress will be evaluated from rectal temperature and heart rate measurements.
Interventions
OTHERclothing type, protective garments of Paul Boye Technologies
The experiment aimed at evaluating the physiological stress obtained when dressed in different clothing (NBC protective garment \[charcoal base\], combat garment and 2 different types of work uniforms- (1)50% cotton and 50% polyester (2)80% cotton and 20% polyester) and during exertion under heat conditions.
Sponsors
Sheba Medical Center
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
PREVENTION
Masking
NONE
Eligibility
Sex/Gender
MALE
Age
18 Years to 30 Years
Healthy volunteers
Yes
Inclusion criteria
* Aged 18-30 years. * Healthy civilian volunteers. * Without known medical illness or medication use.
Exclusion criteria
* The existence or suspicion of existing cardiac or respiratory disease. * Hypertension. * Diabetes. * Psychiatric condition. * Any muscles or skeledon condition. * Any hormonal disease or any other chronic illness that may inhibit participation in the experiment. * Infectious disease 3 days prior to the experiment.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| physiological strain (composite) | 10 days for each participant | The physiological strain will be determined by body core temperature and heart rate of the subjects during a heat tolerance test (HTT). |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Rectal temperature | 10 days for each participant | The rectal temperature will be monitored by a rectal thermistor during each heat tolerance test (HTT). |
| Skin temperature | 10 days for each participant | The skin temperature will be monitored by skin thermistors located at 3 sites (chest, arm and leg). |
| Heart rate | 10 days for each participant | The heart rate will be monitored using a wearable heart rate monitor (Polar® sensor and heart rate monitor watch). |
| Sweat rate (composite) | 10 days for each participant | Sweat rate will be calculated from the patients' body weight and fluid balance. |
Countries
Israel
Outcome results
None listed