Type of Document	Master's Thesis
Author	Nimbarte, Ashish Dashrathrao
Author's Email Address	animba1@lsu.edu
URN	etd-06122005-095822
Title	Effect of Back Belt on Inter-Joint Coordination and Postural Index Value under Self Selected Manual Lifting Technique
Degree	Master of Science in Industrial Engineering (M.S.I.E.)
Department	Industrial & Manufacturing Systems Engineering
Advisory Committee	Advisor Name Title Fereydoun Aghazadeh Committee Chair Charles McAllister Committee Member Craig Harvey Committee Member
Keywords	back belt interjoint coordination lifting biomechanics
Date of Defense	2004-11-23
Availability	unrestricted
Abstract Over the past decade increasing number of US companies have been encouraging the use of abdominal support as a part of their efforts to reduce the human and economic costs due to back injuries. Back belts are assumed to prevent injuries by restricting posture, increasing intra abdominal pressure, providing psychological effect and relaxing trunk muscle to provide circumferential support around the pelvis ring. This research deals in detail with the posture restriction caused by back belt. Two-dimensional kinematic data was collected from ten subjects using nine marker positions. Angular displacement of nine body angles was compared. The kinematic relationship, posture, and interjoint coordination were studied using knee, hip, trunk and thoracic-lumbar joint. Out of the nine body joint angles, five showed decreased flexion, three increased flexion and remaining one had no change. Kinematic relationship was not found to exist between hip, knee, trunk and thoracic-lumbar joint. The behavior of postural index values supported the failure of kinematic relationship hypothesis. The back belt was found to make coordination between hip, knee, trunk and thoracic-lumbar joint less perfectly simultaneous.
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