Evaluation Of Psychophysical Experience And Heart Rate Of Malaysian Female While Manual Lifting Activities

Nurfarahana, Simun (2013) Evaluation Of Psychophysical Experience And Heart Rate Of Malaysian Female While Manual Lifting Activities. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

In manufacturing industry, manual lifting is widely practiced by the workers. However improper manual lifting technique can contribute to occupational injuries such as lower back pain and shoulder pain to the workers. The aim of this study is to develop mathematical models which are specifically used to predict the effects of lifting height, load mass, and twist angle on psychophysical experience and heart rate of Malaysian female while they are manual lifting. This study has performed workplace observation and questionnaire survey to determine lifting techniques and health problems experienced by the female workers. Subsequently a laboratory based experiment was conducted to investigate the effects of lifting height, load mass, and twist angle on psychophysical experience and heart rate of female subjects in manual lifting. Based on statistical analysis, this study found that the load mass has identified as main contributor to the psychophysical experience, pain level and heart rate of female subjects. Additionally nine mathematical models have been developed to predict the effects of lifting height, load mass, and twist angle on psychophysical experience and heart rate of Malaysian female. All models have been validated through historical data and experimental work. Based on statistical analysis, there is a good agreement between the results of the mathematical model, the historical data and the experimental work. Therefore, this study concluded that the models developed by this study are reliable for predicting the effect to the psychophysical experience, pain level and heart rate with respect to lifting height, load mass and twist angle in manual lifting. This study suggests that the effects of load sizes and lifting style should be considered in future study.

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