Whole-Body Vibration Exposures Among Solid Waste Collecting Truck Operators

2018 ◽  
Vol 62 (1) ◽  
pp. 860-864
Author(s):  
Hyoung-gon (Frank) Ryou ◽  
Peter W Johnson
Keyword(s):  
Solid Waste ◽  
Whole Body Vibration ◽  
Whole Body ◽  
Low Back ◽  
Body Vibration ◽  
Study Results ◽  
Different Types ◽  
Vibration Action ◽  
Regular Work ◽  
Vector Sum

A number of studies have shown an association between whole-body vibration (WBV) exposure and the onset and development of low back pain among professional vehicle operators. This study measured WBV exposures from 12 drivers who operated four different types of solid waste collecting trucks during part of their regular work shift. The daily average weighted A(8), vibration dose value VDV(8), and vector sum A(8) and VDV(8) exposures were analyzed and compared across the solid waste collecting trucks. Study result showed that the majority of A(8) and all of the VDV(8) predominant axis exposures were above International Organization for Standardization (ISO) daily vibration action limit (A(8) = 0.5 m/s2, VDV(8) = 9.1 m/s1.75). Based on the predominant axis and vector sum exposures, most of the trucks reached the daily vibration action limits before 8-hours. When compared to the predominant axis A(8) exposures, the predominant axis VDV(8) exposures reduced the acceptable solid waste collecting truck operating times on average by over 4 hours. Our study results demonstrated that these solid waste collecting truck operators were exposed to high levels of both continuous and impulsive WBV exposures, with the impulsive WBV exposures indicating that they may pose a greater risk to the driver’s health.

Self-Reported Low Back Symptoms in Urban Bus Drivers Exposed to Whole-Body Vibration

Spine ◽  
1992 ◽  
Vol 17 (9) ◽  
pp. 1048-1059 ◽  
Author(s):  
Massimo Bovenzi ◽  
Antonella Zadini
Keyword(s):  
Whole Body Vibration ◽  
Whole Body ◽  
Low Back ◽  
Bus Drivers ◽  
Body Vibration ◽  
Urban Bus

scholarly journals Whole-body vibration exercise for low back pain

Medicine ◽  
2018 ◽  
Vol 97 (38) ◽  
pp. e12534
Author(s):  
Yi-Li Zheng ◽  
Zhi-Jie Zhang ◽  
Meng-Si Peng ◽  
Hao-Yu Hu ◽  
Ju Zhang ◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Whole Body Vibration ◽  
Whole Body ◽  
Low Back ◽  
Body Vibration ◽  
Vibration Exercise

POSSIBLE MECHANISMS OF LOW BACK PAIN DUE TO WHOLE-BODY VIBRATION

1998 ◽  
Vol 215 (4) ◽  
pp. 687-697 ◽  
Author(s):  
M.H. Pope ◽  
D.G. Wilder ◽  
M. Magnusson
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Whole Body Vibration ◽  
Whole Body ◽  
Low Back ◽  
Body Vibration

Comparisons of Whole Body Vibration, Muscle Activity and Non-driving Task Performance between Different Seat Suspensions in an Autonomous Passenger Car Application

2018 ◽  
Vol 62 (1) ◽  
pp. 1848-1852
Author(s):  
Kiana Kia ◽  
Peter W Johnson ◽  
Jeong Ho Kim
Keyword(s):  
Task Performance ◽  
Muscle Activity ◽  
Whole Body Vibration ◽  
Active Suspension ◽  
Whole Body ◽  
Low Back ◽  
Motion Platform ◽  
Body Vibration ◽  
Pointing Task ◽  
Driving Task

This study compared whole body vibration (WBV), muscle activity and non-driving task performance between different seat suspension settings in a simulated autonomous passenger car environment. To simulate autonomous vehicle environment, field-measured vibration profiles were recreated on a large-scale 6-degree-of-freedom motion platform. In a repeated-measures laboratory experiment, we measured whole body vibration, muscle activity (neck, shoulder and low back), participants non-driving task performance while participants performed non-driving tasks (pointing task with a laptop trackpad, keyboard typing, web-browsing, and reading) on three different suspension seats mounted on the motion platform: vertical (z-axis) electromagnetic active suspension, multi-axial (lateral (y-axis) and vertical (z-axis)) electromagnetic active suspension, and no suspension (industry standard suspension-less seat for passenger cars). The average weighted vibration [A(8)] and vibration dose value [VDV(8)] showed that the seat measured vibration on both the vertical [A(8) = 0.29 m/s2 and VDV(8) = 10.70 m/s1.75] and multi-axial suspension seats [A(8) = 0.29 m/s2 and VDV(8) = 10.22m/s1.75] were lower than no-suspension seat vibration [A(8) = 0.36 m/s2 and VDV(8) = 12.84 m/s1.75]. Despite the significant differences in WBV between the different suspensions there were no significant differences across three different suspension seats in typing performance (typing speed and accuracy: p’s > 0.83), pointing task performance (movement time and accuracy: p’s > 0.87), web-browsing (number of questions and webpages read: p = 0.42), and reading (number of words read: p = 0.30). The muscle activity in low back (erector spinae) and shoulder (trapezius) muscles also did not show any significant differences (p’s > 0.22). These laboratory study findings indicated that despite the significant reduction in WBV, neither vertical nor multi-axial active suspension seats improve non-driving task performance as compared to the no-suspension seat.

Evaluation of i-Pod App to Assess Whole-Body Vibration and Seat Transmissibility on Mobile Mining Equipment

2018 ◽  
Author(s):  
Alan G. Mayton ◽  
Brian Y. Kim
Keyword(s):  
Occupational Safety ◽  
Low Cost ◽  
Whole Body Vibration ◽  
Mobile App ◽  
Whole Body ◽  
Mining Equipment ◽  
Simple Method ◽  
Body Vibration ◽  
Study Results ◽  
Percent Difference

Researchers at the National Institute for Occupational Safety and Health (NIOSH) performed a pilot study focusing on the measurement accuracy of a mobile iOS application (app) to assess whole-body vibration (WBV) and seat performance on mobile mining equipment. The major objectives of this study were to assess the accuracy of an iPod app and determine if a pair of iPods running the iPod app were suitable to measure SEAT (Seat Effective Amplitude Transmissibility) value. The goal is to recommend a simple method to determine when a vehicle seat may need to be repaired, replaced, or adjusted. The study showed that the iPod app has the potential to serve as a low-cost tool to estimate WBV exposures to operators of mobile mining equipment. The study results were similar to those obtained by Burgess-Limerick et al. for operator WBV exposures on mining equipment. In contrast, an effort to examine seat performance using the mobile app showed greater variation between the app and the precision Siemens/LMS system selected as the “gold standard.” When comparing the Siemens/LMS and iPod pair systems, SEAT values calculated using weighted-root-mean-square acceleration (aw) resulted in a mean percent difference of 8.5±7.9%, whereas those calculated using vibration dose value (VDV) resulted in a mean percent difference of 5.5±4.4%. Additional data collection is necessary to determine what factors may be associated with this variance.

Sign in / Sign up

Export Citation Format

Share Document