Heat Stress and Physiological Strain of Permeable vs. Impermeable CB Protective Garment
Current protective clothing of any kind, especially the nuclear-biological-chemical (NBC) protective garments, amplify thermal stress because of the inherent properties of the clothing material. High insulation coefficient and low water vapor permeability of the protective cloth limit the ability of sweat to readily evaporate, which consequently result with a significant elevation of body temperature and with excessive body fluid loss (because of inefficient sweating) that might result with significant dehydration.
Combat soldiers require to perform intense physical activities under hostile environmental conditions, including in contaminated areas that need the use of protective garments. The ability to fulfill a mission derives from the soldier's professionalism and from his physiological limits. It is well established that wearing protective garments affect tolerance time (TT) and performance.
To operate in contaminated areas suitable protective garments should be worn. The inherent characteristics of the current protective garments limit, however, the effective working periods with such an ensemble, which is further aggravated in hot climate. Thus, in an attempt to increase TT and enhance work effectiveness, improved protective garments, which result with a lessened heat-stress, are under different stages of development.
The relative influence of air permeability properties, garment weight and garment construction on heat stress and physiological strain will be investigated.
The results will be quantified in terms of body temperatures, heart rate, fluid balance, subjective sensation and the maximum wear time (if necessary extrapolated).
Aperçu de l'étude
Statut
Les conditions
Type d'étude
Inscription (Anticipé)
Contacts et emplacements
Lieux d'étude
-
-
-
Ramat Gan, Israël
- Recrutement
- Sheba Medical Center
-
Contact:
- Amit Druyan, M.D
- E-mail: Amit.Druyan@sheba.health.gov.il
-
-
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria:
- Twelve young (20-30 yr) male subjects will voluntarily participate in this study. The potential participants will be informed of the study's nature, purpose and medical risks. Their inclusion in the study requires the medical clearance by the study's physician (CRF) and after having filled out and sign an informed consent form
Exclusion Criteria:
- heart conditions, blood pressure higher than 140/90 mmHg, known diabetes or any skin illness or lesions. Also be excluded are potential participants who were ill during the 2 weeks prior to the study
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
Cohortes et interventions
Groupe / Cohorte |
|---|
|
men wearing Semipermeable garment
|
|
air permeable garment type BP2
|
|
air permeable garment type BP3
|
|
air permeable garment type MO
|
|
air permeable garment type BP1
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
The physiological burden of different CB Protective Garments
Délai: 1 year
|
The physiological burden of different CB Protective Garments will be mesured by a heat tolerance test (HTT). The subjects will undergo an HTT wearing different CB Protective Garments and the results which indicate physiological burden will be compared between the different garments. |
1 year
|
Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Rectal temperature
Délai: 1 year
|
The rectal temperature will be mesured by rectal thermistore.
|
1 year
|
|
Skin temperature
Délai: 1 year
|
The skin temperature will be mesured by skin thermistores conected to 3 different sites (chest, leg and arm).
|
1 year
|
|
Heart rate
Délai: 1 year
|
Heart rate will be mesured by a polar watch.
|
1 year
|
|
Sweat rate
Délai: 1 year
|
The sweat rate will be calculated in each HTT from the subject's weight before and after the test and his water balance.
|
1 year
|
Collaborateurs et enquêteurs
Parrainer
Les enquêteurs
- Chercheur principal: Amit Druyan, M.D, Medical Corps, Israel Defense Force
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude
Achèvement primaire (Anticipé)
Achèvement de l'étude (Anticipé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Estimation)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Estimation)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Autres numéros d'identification d'étude
- 883-2009-CLIT
Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .