Effect of changing the saddle angle on the incidence of low back pain in recreational bicyclists

Citation
M. Salai et al., Effect of changing the saddle angle on the incidence of low back pain in recreational bicyclists, BR J SP MED, 33(6), 1999, pp. 398-400
Citations number
12
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Ortopedics, Rehabilitation & Sport Medicine
Journal title
BRITISH JOURNAL OF SPORTS MEDICINE
ISSN journal
0306-3674 → ACNP
Volume
33
Issue
6
Year of publication
1999
Pages
398 - 400
Database
ISI
SICI code
0306-3674(199912)33:6<398:EOCTSA>2.0.ZU;2-Z
Abstract
Objective-According to the literature, 30-70% of cyclists suffer from cervi cal, dorsal, or lumbar back pain. This study was conducted to evaluate one of the possible causes of low back pain and to suggest a solution by approp riate adjustments to the bicycle. Methods-Serial fluoroscopic studies were performed while cyclists sat on di fferent types of bicycle (sports, mountain, and city). Pelvic/spine angles were measured at different seat angles, and the related force vectors analy sed. Results-There was a tendency towards hyperextension of the pelvic/spine ang le which resulted in an increase in tensile forces at the promontorium. The se forces can easily be reduced by appropriate adjustment of the seat angle -that is, by creating an anterior inclining angle. The findings of the biom echanical analysis were then applied to a group of cyclists who were member s of a cycling club and who complained of low back pain. After appropriate adjustment of the saddle angle, most of the cyclists (> 70%) reported major improvement in the incidence and magnitude of their back pain. Conclusions-The incidence and magnitude of back pain in cyclists can be red uced by appropriate adjustment of the angle of the saddle. It is important that these findings be conveyed to cyclists, bicycle salesmen, trainers, an d members of the general public who engage in cycling, in order to decrease the prevalence of back pain.