A Research Center for this experiment is intended to study the effectiveness of the rear pad while working to reduce the risks from a gesture inappropriate behavior of mechanic automobile tourism in South County. Mueang Phitsanulok Tools used in the research are: cushion back designed to reduce the risk from a stance that is not appropriate when working under the car's mechanic tested the effectiveness of tools, samples. The number of task 10 by using a cushion and do not use cushion after operating and risk assessment from a stance of working by using the estimate (Rapid Upper Limb Assessment), RULA compare risk score between used and unused seating cushion after using the Wilcoxon test statistic.
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