TY  - CONF
A1  - Brühwiler, P. A.
A1  - Stämpfli, R.
A1  - Huber, R.
A1  - Camenzind, M.
T1  - CO2 and O2 concentrations in integral motorcycle helmets : cause for alarm?
N2  - The average CO2 concentrations relevant to a motorcyclist wearing an integral helmet were measured twenty years ago and found to be alarmingly high. The present study examined gas concentrations typically inhaled by a motorcyclist. Average concentrations of CO2 for persons (n=4) wearing integral motorcycle helmets were measured in the laboratory and the field to facilitate comparison to previous work, and similarly high average concentrations were found: above 2% when stationary, well below 1% for speeds of 50km/h or more. Detailed measurements of the time-dependent CO2 concentrations during normal inhalation showed levels of about half of the corresponding average concentrations, including 1% at standstill, though higher concentrations (4% or more) are inhaled at the beginning of each breath. Opening the visor at standstill lowered the average inhaled concentration only to about 0.8%. The oxygen deficiency is equal to the CO2 concentration, and could also contribute negatively to motorcyclist cognitive abilities.
KW  - Kohlendioxid
KW  - Konferenz
KW  - Konzentration
KW  - Sauerstoff
KW  - Schutzhelm
KW  - Carbon dioxide
KW  - Concentration (chem)
KW  - Conference
KW  - Crash helmet
KW  - Oxygen
Y1  - 2005
UR  - https://bast.opus.hbz-nrw.de/frontdoor/index/index/docId/425
UR  - https://nbn-resolving.org/urn:nbn:de:hbz:opus-bast-4259
ER  -