A biomechanical and subjective assessment and comparison of two wheelbarrow designs

Tan, Yu Qi (2018) A biomechanical and subjective assessment and comparison of two wheelbarrow designs. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Performing repetitive task such as lifting and unloading weights often causes muscle fatigue. Prolong of muscle fatigue may leads in chronic injuries such as low back pain that affects one’s health. Wheelbarrow is a common device that had been used for centuries in transporting loads in different sectors. There are a lot of modifications in designs had been made previously to improve the function of wheelbarrow. The modification also aims to reduce the rate of injuries among the wheelbarrow users. This experiment is aimed to study the comparison of two different types of wheelbarrow based on comparing the muscle activity of subjects’ when using these two devices. The subjective assessment will be analyze by questionnaires form. Surface electromyography method will be used to identify the muscle activity of the common muscles involved when lifting and unloading weights. In this research study, the muscles of biceps brachii, triceps brachii, trapezius muscle, and low back muscles will be examined. Surface EMG data will be analyze based on compression at 90th percentile by using the repeated measures analysis of variance (ANOVA). The expected result of this study is that the modified concept wheelbarrow uses less energy to operate than the original concept wheelbarrow. It is the most important factor that aids in reducing the rate of muscle injuries between wheelbarrow device users.

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