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).
Panoramica dello studio
Stato
Condizioni
Tipo di studio
Iscrizione (Anticipato)
Contatti e Sedi
Luoghi di studio
-
-
-
Ramat Gan, Israele
- Reclutamento
- Sheba Medical Center
-
Contatto:
- Amit Druyan, M.D
- Email: Amit.Druyan@sheba.health.gov.il
-
-
Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Metodo di campionamento
Popolazione di studio
Descrizione
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
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
Coorti e interventi
Gruppo / Coorte |
|---|
|
men wearing Semipermeable garment
|
|
air permeable garment type BP2
|
|
air permeable garment type BP3
|
|
air permeable garment type MO
|
|
air permeable garment type BP1
|
Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
The physiological burden of different CB Protective Garments
Lasso di tempo: 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
|
Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Rectal temperature
Lasso di tempo: 1 year
|
The rectal temperature will be mesured by rectal thermistore.
|
1 year
|
|
Skin temperature
Lasso di tempo: 1 year
|
The skin temperature will be mesured by skin thermistores conected to 3 different sites (chest, leg and arm).
|
1 year
|
|
Heart rate
Lasso di tempo: 1 year
|
Heart rate will be mesured by a polar watch.
|
1 year
|
|
Sweat rate
Lasso di tempo: 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
|
Collaboratori e investigatori
Investigatori
- Investigatore principale: Amit Druyan, M.D, Medical Corps, Israel Defense Force
Studiare le date dei record
Studia le date principali
Inizio studio
Completamento primario (Anticipato)
Completamento dello studio (Anticipato)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Stima)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Stima)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Altri numeri di identificazione dello studio
- 883-2009-CLIT
Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .