NDLI: Quantification of head sweating during rest and exercise in the heat

Content Provider	Springer Nature Link
Author	O’Brien, Catherine Cadarette, Bruce S.
Copyright Year	2012
Abstract	The head’s capacity for evaporative heat loss is important for design of protective helmets for use in hot environments. This study quantified head sweating rate (m sw) in eight males during rest and exercise at three metabolic rates (338 ± 36, 481 ± 24, 622 ± 28 W) in hot-dry (HD: 45 °C, 21 % RH) and hot-wet (HW: 35 °C, 69 % RH) conditions (matched at 31.6 °C WBGT), which were counterbalanced. Heads were shaved, and surface area was (458 ± 61 cm2) measured by 3D scanner. For measurement of head m sw, dry air was passed through a sealed helmet, whereas for forearm m sw a capsule (15.9 cm2) was ventilated with ambient air. Evaporation rate was determined from the increase in vapor pressure in the exiting air. Whole-body sweat loss was calculated from the change in nude weight plus fluid intake and corrected for respiratory fluid losses. Head m sw increased (p = 0.001) with metabolic rate, and was lower (p = 0.018) in HD (0.4 ± 0.2 mg cm−2 min−1 at rest to 1.1 ± 0.6 mg cm−2 min−1 at 622 W), compared to HW (0.5 ± 0.3–1.4 ± 0.8 mg cm−2 min−1). Forearm m sw increased (p < 0.001) with metabolic rate, but was higher (p = 0.002) in HD (0.4 ± 0.3–1.4 ± 0.7 mg cm−2 min−1) than HW (0.1 ± 0.1–1.1 ± 0.3 mg cm−2 min−1). Whole-body sweat loss was not significantly different (p = 0.06) between HD (647 ± 139 g m−2 h−1) and HW (528 ± 189 g m−2 h−1). This study demonstrates the importance of the head for evaporative heat loss, particularly for populations who wear protective clothing which can impair vapor transfer from the skin.
Starting Page	735
Ending Page	741
Page Count	7
File Format	PDF
ISSN	14396319
Journal	European Journal of Applied Physiology
Volume Number	113
Issue Number	3
e-ISSN	14396327
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-09-01
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Evaporation Heat loss Helmet Human Physiology Occupational Medicine/Industrial Medicine Sports Medicine
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Physiology (medical) Public Health, Environmental and Occupational Health Sports Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Local differences in sweat secretion from the head during rest and exercise in the heat

Heat balance and cumulative heat storage during exercise performed in the heat in physically active younger and middle-aged men

Thermometry and calorimetry assessment of sweat response during exercise in the heat

Describing individual variation in local sweating during exercise in a temperate environment

Ageing and thermal responses during passive heat exposure: sweating and sensory aspects

Evidence of a greater onset threshold for sweating in females following intense exercise

Influence of nonthermal baroreceptor modulation of heat loss responses during uncompensable heat stress

Artificial gravity with ergometric exercise as a countermeasure against cardiovascular deconditioning during 4 days of head-down bed rest in humans

Baroreflex impairment during rapid posture changes at rest and exercise after 120 days of bed rest

Quantification of head sweating during rest and exercise in the heat

Similar Documents

Local differences in sweat secretion from the head during rest and exercise in the heat

Heat balance and cumulative heat storage during exercise performed in the heat in physically active younger and middle-aged men

Thermometry and calorimetry assessment of sweat response during exercise in the heat

Describing individual variation in local sweating during exercise in a temperate environment

Ageing and thermal responses during passive heat exposure: sweating and sensory aspects

Evidence of a greater onset threshold for sweating in females following intense exercise

Influence of nonthermal baroreceptor modulation of heat loss responses during uncompensable heat stress

Artificial gravity with ergometric exercise as a countermeasure against cardiovascular deconditioning during 4 days of head-down bed rest in humans

Baroreflex impairment during rapid posture changes at rest and exercise after 120 days of bed rest

Quantification of head sweating during rest and exercise in the heat