| Thermal perception of ventilation changes in full-face motorcycle helmets: subject and manikin study. | |
| | |
MedLine Citation:
|
PMID: 20959389 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
We report the effects of full-face motorcycle helmet ventilation systems on heat, airflow, noise, and comfort perception for ventilation changes on the scalp. Eight subjects (aged 28.0 ± 5.4 years) underwent two experimental trials at ambient temperatures of 23.7 ± 0.4°C or 27.5 ± 0.3°C. In each trial, the thermally equilibrated subjects underwent two examination phases, during which four different helmets were assessed at wind speeds of 39.2 ± 1.9 km h(-1) and 59.3 ± 1.4 km h(-1). Vent-induced heat loss in the scalp ranged from -6.1 to 6.1 W, corresponding to vents being closed or opened, respectively. Perception of vent-induced changes was assessed immediately after the change. We find that the vent-induced heat loss, the subject, and the helmet are the most important response factors. In addition, comparison of two helmets with similar vent-induced heat loss suggests that internal airflow patterns may be important in explaining the observed perception differences. |
| | |
Authors:
|
Cornelis P Bogerd; René M Rossi; Paul A Brühwiler |
Related Documents
:
|
19182129 - Tachistoscopic exposure and masking of real three-dimensional scenes. 20981539 - Surface texture can bias tactile form perception. 7236749 - Some psychophysical determinants of discrete moiré patterns. 19542599 - Constructive perception of self-motion. 16321419 - Neural correlates of shape-from-shading. 12700879 - Apparent motion cues distort object localisation in egocentric space. 22168479 - Stifle extension results in differential tensile forces developing between abaxial and ... 9385869 - Dynamic mental representation in infancy. 19294929 - Quantifying a dynamic risk landscape: heterogeneous predator activity and implications ... |
Publication Detail:
|
Type: Journal Article Date: 2010-10-19 |
Journal Detail:
|
Title: The Annals of occupational hygiene Volume: 55 ISSN: 1475-3162 ISO Abbreviation: Ann Occup Hyg Publication Date: 2011 Mar |
Date Detail:
|
Created Date: 2011-02-14 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0203526 Medline TA: Ann Occup Hyg Country: England |
Other Details:
|
Languages: eng Pagination: 192-201 Citation Subset: IM |
Affiliation:
|
Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Protection and Physiology, Lerchenfeldstrasse 5, CH-9011 St Gallen, Switzerland. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Association of rs10830963 and rs10830962 SNPs in the melatonin receptor (MTNR1B) gene among Han Chin...
Next Document: Nucleotide-induced conformational transitions in the CBS domain protein MJ0729 of Methanocaldococcus...