publication . Article . 2004

Foot positioning instruction, initial vertical load position and lifting technique: effects on low back loading

Idsart Kingma; Tim Bosch; Louis Bruins; Jaap H van Dieën;
Open Access English
  • Published: 22 Oct 2004
  • Country: Netherlands
Abstract
This study investigated the effects of initial load height and foot placement instruction in four lifting techniques: free, stoop (bending the back), squat (bending the knees) and a modified squat technique (bending the knees and rotating them outward). A 2D dynamic linked segment model was combined with an EMG assisted trunk muscle model to quantify kinematics and low back loading in 10 subjects performing 19 different lifting movements, using 10.5 kg boxes without handles. When lifting from a 0.05 m height with the feet behind the box, squat lifting resulted in 19.9% (SD 8.7%) higher net moments (p < 0.001) and 17.0% (SD 13.2%) higher compression forces (p < 0...
Subjects
Medical Subject Headings: human activitiesbody regionsmusculoskeletal diseases
free text keywords: Low back, Simulation, Squat, Bending, Trunk, Compression (physics), Engineering, business.industry, business, Electromyography, medicine.diagnostic_test, medicine, Anatomy, Orthodontics, Vertical load, Kinematics
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