• Skip to primary navigation
  • Skip to main content
  • Skip to footer
EXTREMESPORTMED

EXTREMESPORTMED

Society of Action Sports Medicine

  • HOME
  • VISION
  • MISSION
  • OUR EVENTS
    • CONGRESS
    • SUMMER SCHOOL
    • WEBINAR – Running
    • WEBINAR – Skiing
  • BOOKS
    • EXTREME SPORTS MEDICINE
    • THORACIC US & INTEGRATED IMAGING
    • SYSTEMS & METHODS IN EXTREME SPORTS
  • PAPERS
    • SURFING INJURIES
    • BASE JUMPING
    • KITESURFING
    • RODEO
    • MTB
    • CLIMBING
    • SKIING & SNOWBOARDING
    • ROCK CLIMBING
    • WINGSUIT FLYING
    • ROCK-CLIMBING PROTECTION
    • SKYRUNNING
    • DOWNHILL
    • MOTOCROSS
    • CONCUSSION
    • MUSCLE INJURIES
    • PERFORMANCE ENHANCEMENT
    • RETURN TO PLAY
    • SUPPORTIVE GARMENTS & BRACING
    • POWERED PARAGLIDING
    • SMART CLOTHING
    • FOOT LAUNCHED FLYING SPORTS
    • PEDIATRIC INJURIES IN SKATEBOARDING
  • PEER REVIEW SYSTEM
  • TECHNOLOGICAL TRANSFER
  • MY ACCOUNT
You are here: Home / Resources / Hand-arm vibration in motocross

Hand-arm vibration in motocross

July 25, 2021

M. Tarabini1, N. Mauri2, I. Gaudio2, S. Cinquemani1, A. P. Moorhead1, R. Bongiovanni3, F. Feletti4,5

1 Department of Mechanical Engineering, Politecnico di Milano University, Milan, Italy

2 School of Mechanical Engineering, Politecnico di Milano University, Milan, Italy

3 KITE s.r.l Centre Engineer, Mandello del Lario, Lecco, Italy

4 Department of Diagnostic Imaging, Ausl Romagna, S. Maria delle Croci Hospital, Ravenna, Italy

5 Department of Electronics Information and Bioengineering, Politecnico di Milano University, Milan, Italy

 

SUMMARY

Objective. This study focused on the quantification of vibration which reaches the hands of motocross riders and on the reduction of such vibration thanks to the handlebar and handlebar mounts.
Background. Vibration transmitted through the hand and arm can lead to vascular and musculo- skeletal problems that are well documented in the scientific literature. Controlled studies identi- fying plate-handlebar characteristics effects on the vibration attenuation in motocross are lacking. Methods. We measured the vibration exposure of professional and recreational motocross riders on a motocross track and replicated the vibration patterns on a LDS V930 shaker in the laboratory, to analyze the effectiveness of various components in reducing the rider vibration exposure. Labo- ratory tests were performed with ten subjects randomly gripping different combinations of handle- bars and steering plates, and questionnaires were used to evaluate the comfort. Objective measure- ments of vibration reduction were then compared to the subjective values of perceived comfort. Results. According to the current EU legislation, the measured vibration levels reach the expo- sure limit in less than 1h. The mechanical characteristics of the handlebars and steering plates have a limited effect on the vibration transmitted to the rider’s hands. The rubber elements that many manufacturers use to reduce the vibration have limited effects at frequencies that are harmful for the musculoskeletal system. Questionnaires results have no correlation with the measured plate and handlebar performances. Conclusions. Most of the techniques used to reduce the hand-arm vibration exposure of moto- cross drivers are ineffective.

KEY WORDS: Hand-Arm vibrations; transmissibility, riding comfort, steering plate, handlebar, steering system, handlebar’s grip, motocross

PDF

ENGINEERING,  LAND SPORTS

Footer

SOCIAL

  • Facebook
  • LinkedIn
  • Instagram

CONTACT

Contact

Navigation

  • SUPPORT
  • PRIVACY POLICY
  • COOKIE POLICY

© EXTREMESPORTMED 2021