1 / 18

Postural Stability of Commercial Truck Drivers: Impact of Whole-Body Vibration

Postural Stability of Commercial Truck Drivers: Impact of Whole-Body Vibration. Shaman Ahuja, Graduate Student Dr. Jerry Davis , Faculty Advisor. What is Postural Stability?. Base of Support. Center of Mass Trace. Why research on Commercial Truck Drivers?.

kamali
Télécharger la présentation

Postural Stability of Commercial Truck Drivers: Impact of Whole-Body Vibration

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Postural Stability of Commercial Truck Drivers: Impact of Whole-Body Vibration Shaman Ahuja, Graduate Student Dr. Jerry Davis, Faculty Advisor

  2. What is Postural Stability? Base of Support Center of Mass Trace

  3. Why research on Commercial Truck Drivers? • 517 fatal injuries reported in the Truck Transportation Industry in 2003, of which 17 were reported to be as a result of falls from a non-moving vehicle. • Long Haul Freight (LHF) Trucking accounted for approximately 70% of the fatal fall related injuries. Note: Data from Bureau of Labor Statistics

  4. Why research on Commercial Truck Drivers? • Falls from LHF during descent (egress) >8* Falls during ascending into the trucks cab (driver’s compartment) (Nicholson, 1985). • Loss of Balance - contributing factor in fall incidents (Holbein & Redfern, 1997).

  5. Gap/Void in Literature • Previous research investigated the relationship between WBV and postural stability in simulated laboratory environments (uni-axial vibration) (Futatsuka et al., 1998; Cohen, 1979). • Lack of real-time vibration exposure (tri-axial) data – Very limited research has involved real time truck driving!

  6. Method: Venue • Research conducted at 1.9 mile National Center for Asphalt Technology (NCAT) Test Track • Track owned by Auburn University for Asphalt Research • 5 Long Haul Freight trucks owned by Auburn University operate on 2 shifts.

  7. NCAT Test Track

  8. The Fleet: 5 LHF Trucks

  9. Instrument & Test Used • NeuroCom® Balance Master System™ Test Used: Modified Clinical Test of Sensory Interaction on Balance (mCTSIB). • Differentiates between Eyes Open and Eyes Closed

  10. Driving Routines • 2 Driving Shifts • 4:30 AM to 2:00 PM • 2:00 PM to 11:00 PM • standard breaks: 30 minutes each • 5 trucks @ 45 miles/hour • Total distance covered/day=2925 miles

  11. Procedure Pre1 Post1 Pre2 Post2 Pre3 Post3 Driving session Rest Break Test Procedure: • Driver is called to testing position. • Driver stops completely, egress from vehicle and steps on the force plate. • Principal Investigator conducts the experiment. • Driver climbs back into Cab and drives away.

  12. Anterior/Posterior SwayEyes Open vs. Eyes Closed

  13. Medial/Lateral SwayEyes Open vs. Eyes Closed

  14. Results/Analysis • Sway (cm) during an 8-hour driving shift was: • (a) greater in eyes open versus eyes closed testing conditions, • (b) greater following a standard 2 and ½ hour driving routine, • (c) greater at each of the post-test measures, with results indicating a time dependent increase over each driving routine.

  15. Future Research • Assess the effects WBV has on the visual system. • Research to focus on the recovery aspect of exposure to WBV. • Research the minimum duration of WBV exposure which significantly affects postural stability.

  16. Future Research • Spinal shrinkage vs WBV. • Cruise Control vs Manual control. • HAV • Combination of Vibration & Noise • Roadside safety related research.

  17. Questions & Comments

More Related