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Variability Of Lifting Technique Of Experienced Women Lifters Across Light, Medium And Heavy Loads

J. Stevenson, T. Coward, W. Albert
Published 2000 · Geology

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The purpose of this study was to examine the variability in lifting technique kinematics within and between 35 female subjects when lifting light, medium and heavy loads. Each female performed five lifts in a free-style from floor to shoulder-height of a box (37times;29times;27 cm) with handles at three weights: 5, 10 and 15 kg. Polhemus Fastrak™, 3D electromagnetic sensors placed on the wrist, T***I, L***I and S***I spinous processes revealed spinal kinematics that showed increasing variability with heavier loads at the T***I sensor, L***I sensor, thoracic flexion angle, lumbar flexion angle and trunk flexion displacements. The velocity profiles provided similar results of variability for the T***I sensor, L***I sensor, S***I sensor, thoracic and lumbar flexion velocities. In addition, differences in technique were examined between loads using knee bend, box to body distance and trunk mean angles.
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