Efficacy of body ventilation system for reducing strain in warm and hot climates
This study determined whether a torso-vest forced ambient air body ventilation system (BVS) reduced physiological strain during exercise-heat stress. Seven heat-acclimated volunteers attempted nine, 2-h treadmill walks at 200 W m −2 in three environments, −40°C, 20% rh (HD), 35°C, 75% rh (HW), and 3...
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| Veröffentlicht in: | European journal of applied physiology 2008-06, Vol.103 (3), p.307-314 |
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| Hauptverfasser: | , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | This study determined whether a torso-vest forced ambient air body ventilation system (BVS) reduced physiological strain during exercise-heat stress. Seven heat-acclimated volunteers attempted nine, 2-h treadmill walks at 200 W m
−2
in three environments, −40°C, 20% rh (HD), 35°C, 75% rh (HW), and 30°C, 50% rh, (WW) wearing the Army Combat Uniform, interceptor body armor (IBA) and Kevlar helmet. Three trials in each environment were BVS turned on (BVS
On
), BVS turned off (BVS
Off
), and no BVS (IBA). In HD, BVS
On
significantly lowered core temperature (
T
re
), heart rate (HR), mean skin temperature (
T
sk
), mean torso skin temperature (
T
torso
), thermal sensation (TS), heat storage (
S
), and physiological strain index (PSI), versus BVS
Off
and IBA (
P |
|---|---|
| ISSN: | 1439-6319 1439-6327 |
| DOI: | 10.1007/s00421-008-0707-9 |