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An ergonomic assessment of the airline baggage handler

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54account for <strong>the</strong>m. These treatment groups now were made up <strong>of</strong> those who initiallyreceived <strong>the</strong> belt and training, and <strong>the</strong> o<strong>the</strong>r which initially received a belt only. Thesegroups were called <strong>the</strong> dropout groups, which were monitored to survey any effects,which may occur after <strong>the</strong> period <strong>of</strong> wearing <strong>the</strong> weightlifting back belt.There were a total <strong>of</strong> 31 injuries observed during <strong>the</strong> eight-month study period <strong>of</strong>which 28 were on-<strong>the</strong>-job injuries, which were used in <strong>the</strong> analysis. Three injuries werenon job-related. These three injuries came from a belt group, a training only group, andfrom a control group. It was noted <strong>the</strong>re was no correlation between <strong>the</strong> incident rate andprevious injury with r=0.0529.Overall, this study indicated that nei<strong>the</strong>r <strong>the</strong> belt nor training group had asignificant effect on decreasing <strong>the</strong> lumbar injury rate, rendering <strong>the</strong> question are backbelts helpful in reducing back injury, inconclusive.Statistical analysis <strong>of</strong> for lost workday case incident rate showed a marginalsignificant difference between <strong>the</strong> dropout groups, and <strong>the</strong> training group and <strong>the</strong> controlgroup. There seemed to be some connection between <strong>the</strong> increase in <strong>the</strong> number andseverity <strong>of</strong> lumbar injuries rates, and those who wore <strong>the</strong> belt in <strong>the</strong> beginning, butdecided to stop wearing <strong>the</strong> belt towards <strong>the</strong> end <strong>of</strong> <strong>the</strong> study. It was concluded that backbelts may increase <strong>the</strong> risk <strong>of</strong> injury to <strong>the</strong> lumbar area on occasion when <strong>the</strong> user is notwearing <strong>the</strong> supportive belts. It was noted in <strong>the</strong>ir survey that some <strong>baggage</strong> <strong>handler</strong>s feltthat <strong>the</strong>y could develop a physical dependency on <strong>the</strong> belt, thus making lifting without<strong>the</strong> belt more dangerous. The increase <strong>of</strong> <strong>the</strong> intra abdominal pressure (lAP) <strong>of</strong> <strong>the</strong>wearer also came with some discomfort according to <strong>the</strong> <strong>baggage</strong> <strong>handler</strong> survey. The

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