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THE EFFECTIVENESS OF ADJUSTABLE HEIGHT CARTS IN REDUCING THE RISK OF LOW BACK INJURY IN GROCERY STOCKERS

This study examines the effectiveness of adjustable height carts in reducing the risk of low back injuries among grocery stockers. With high incidences of injuries linked to awkward postures and lifting from low heights, our research involved 15 Spanish-speaking workers in a Puerto Rican grocery store. Participants used spring-loaded carts that could be adjusted as weight was added, allowing products to be placed at waist level. Results showed a significant reduction in forward flexion and motion, lowering injury risks while maintaining productivity. Feedback from workers was overwhelmingly positive, highlighting ease of use and increased efficiency.

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THE EFFECTIVENESS OF ADJUSTABLE HEIGHT CARTS IN REDUCING THE RISK OF LOW BACK INJURY IN GROCERY STOCKERS

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  1. THE EFFECTIVENESS OF ADJUSTABLE HEIGHT CARTS IN REDUCING THE RISK OF LOW BACK INJURY IN GROCERY STOCKERS Kermit Davis University of Cincinnati Lida Orta AnésUniversity of Puerto Rico

  2. The Problem • High incidence of low back injuries and costs BLS, 2009 • Lifting is a main factor • Awkward postures • Lifting from low heights • Lifting heavy product weight

  3. Cost of Injuries

  4. Comparison of Low Back Injury Costs

  5. Comparison of Lumbar Disk Injury Costs

  6. Objective • Demonstrate whether lifting from the right height can reduce the risk of low back injuries for grocery item stocking tasks • Adjustable cart raises height of cart surface

  7. Participants • 15 male workers • 5 inexperienced and 10 experienced • Grocery store in Puerto Rico • Spanish speaking

  8. Adjustable Cart • Adjusted as weight is added • Spring loaded • Easy to maneuver • Limitations • Pink • Small surface area

  9. Carts and Lifting Conditions

  10. Trunk Posture

  11. Trunk Velocity

  12. Risk of Low Back Injury

  13. Obstacles • Unique population • Spanish speaking, poor workplace • Gaining access to workers and actual workplace

  14. Putting It All Together • Adjustable cart allowed product to be placed at waist level • Reduced forward flexion and motion • Reduced risk of injury • No detriment to productivity • Workers liked the cart • Perceptions were very favorable • Easy to use, more productive • Small change in Twist motion • Maneuverability of cart

  15. Are There Any Questions?

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