Eingang zum Volltext in OPUS

Hinweis zum Urheberrecht

InProceedings (Aufsatz / Paper einer Konferenz etc.) zugänglich unter
URL: http://bast.opus.hbz-nrw.de/volltexte/2015/1408/


Cyclist-reported habits of helmet usage and differences in riding postures by using helmets

Jänsch, Michael ; Otte, Dietmar

Originalveröffentlichung: (2015) 6th International Conference on ESAR 2014
pdf-Format:
Dokument 1.pdf (9.206 KB)

Bookmark bei Connotea Bookmark bei del.icio.us
Freie Schlagwörter (Deutsch): Benutzung , Blickfeld , Deutschland , Digitale Bildverarbeitung , Einstellung (psychol) , Interview , Körperstellung , Konferenz , Kopf , Radfahren , Radfahrer , Rücken , Schutzhelm , Unfall , Winkel
Freie Schlagwörter (Englisch): Acceptability , Accident , Angle , Back (human) , Conference , Cycling , Cyclist , Digital image processing , Field of vision , Germany , Head , Interview , Posture , Protective helmet , Use
Collection 1: BASt-Beiträge / ITRD Sachgebiete / 80 Unfallforschung
Collection 2: BASt-Beiträge / Tagungen / International Conference on ESAR / 6th International Conference on ESAR
Institut: Sonstige
DDC-Sachgruppe: Soziale Probleme, Sozialarbeit
Sonstige beteiligte Institution: Medizinische Hochschule Hannover. Verkehrsunfallforschung
Dokumentart: InProceedings (Aufsatz / Paper einer Konferenz etc.)
Sprache: Englisch
Erstellungsjahr: 2015
Publikationsdatum: 29.07.2015
Kurzfassung auf Englisch: Within the COST Action TU1101 the working group WG 1 is dealing with acceptance criteria and problems in helmet use while bicycling concerning conspicuity, thermal stress, ventilation deficits and other potential confounding. To analyze the helmet usage practice of bicyclists in Europe a questionnaire was developed in the scope of working group 1 to collect relevant information by means of a field study. The questionnaire consists of some 66 questions covering the fields of personal data of the cyclist, riding und helmet usage habits, information concerning the helmet model and the sensation of the helmet, as well as information on previous bicycle accidents. A second complementary study is conducted to analyze if the use of a bicycle helmet influences the seating geometry and the posture of cyclists when riding a bicycle and if the if the helmet vertically limits the vision. For this purpose cyclists with and without helmets were photographed in real world situations and relevant geometrical values such as the decline of the torso, the head posture of the upper vertical vision limit due to the helmet were established from the photos. The interim results of the field studies which were conducted in Germany by the Hannover Medical School are presented in this study. Some 227 questionnaires were filled out, of which 67 participants had used a helmet and 42 of the 227 participants have had a bicycle accident before. For the analysis of the riding position and posture of the cyclist over 40 pictures of riders with a helmet and over 240 pictures of riders without a helmet were measured concerning the seating geometry to describe the influence of using a bicycle helmet. Some results in summary: From the riders interviewed with the questionnaire only 11% of the city bike riders and 12% of the mountain bike riders always used the helmet, while 38% of the racing bike riders and 88% of the e-bike-riders always used the helmet. The helmet use seems not to change the sensation of safety of cycling compared to the use of a car. The arguments for not wearing a helmet are mostly stated to be the short distance of a trip, high temperatures or carelessness and waste of time. The reasons for using a helmet are stated to be the feeling of safety and being used to using a helmet. Being a role model for others was also stated to be a reason for helmet use. Concerning the sensation of the helmet 9% of the riders reported problems with the field of vision when using a helmet, 57% saw the problem of sweating too much, and 10% reported headaches or other unpleasant symptoms like pressure on the forehead when using the helmet. The analysis of the seating posture from the pictures taken of cyclists revealed that older cyclists generally have a riding position where the handle bar is higher than the seat (0° to 10° incline from seat to handlebar), while younger riders had a higher variance (between -10° decline and 20° incline). Further, elderly riders and riders with helmets seem to have a more upright position of the upper body when cycling. The vertical vision limit due to the helmet is determined by the front rim of the helmet (mostly the sun shade). Typical values here range from 0° (horizontal line from the eye to the sun shade) to 75° upwards, in which elderly riders tend to have a slightly higher vertical vision limit possibly due to the helmet being worn more towards the face.