We will assist you in creating products (bathtubs) in human and life engineering.

We will introduce a method to evaluate how the burden on the caregiver changes due to the presence of a chair, using the example of placing a chair in the bathtub.

【Evaluation by Human and Life Engineering】 ■Evaluation Method We will prepare various specifications for evaluation subjects and evaluators as shown below, and conduct evaluations according to the evaluation items for cases with and without a chair. ■Evaluators We will prepare individuals receiving bathing assistance and caregivers providing home visit bathing assistance. ■Evaluation Subjects The evaluation subjects will be a standard bathtub and a chair placed inside it. ■Target Actions (1) In the absence of a chair In a standard bathtub, the caregiver needs to lift the person being assisted from behind in one motion. (2) When there is a chair in the bathtub The caregiver will lift the person being assisted from the bottom of the bathtub to the chair. Next, they will lift them to the edge of the bathtub. ■Evaluation Items (1) Subjective Evaluation - Physical burden on both the caregiver and the person being assisted. (2) Muscle Burden We will measure the muscle burden on the caregiver. For details, please refer to the basic information. (3) Floor Reaction Force We will measure the load on the floor when the caregiver lifts the person being assisted. 【Expected Outcomes】 We will be able to determine the extent to which the presence of a chair in the bathtub reduces the burden on the caregiver when lifting the person being assisted out of the bathtub.

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