Distinguishing Between Stooping and Squatting Using Difference in Angular Velocity of Upper Body Forward Tilt

The purpose of this study is to classify postures that produce different lumbar loads in order to eliminate occupational low back pain among nurses and caregivers. We focus on forward tilting motion during the lifting of heavy objects, which nurses perform frequently when caring for patients. There...

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Bibliographic Details
Main Authors: Ishidoh, Yudai, Otsuka, Keisuke, Itami, Taku, Yoneyama, Jun, ITAMI, Kimiwa
Format: Conference Proceeding
Language:English
Subjects:
Angular velocity
Industries
Medical services
Pain
Proposals
System integration
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Summary:The purpose of this study is to classify postures that produce different lumbar loads in order to eliminate occupational low back pain among nurses and caregivers. We focus on forward tilting motion during the lifting of heavy objects, which nurses perform frequently when caring for patients. There are two types of forward tilting postures: stoop lifting, which results in a high lumbar load, and squat lifting, which reduces the lumbar load, and their attachment points are issues for these two methods. In this study, we propose a method to determine the forward tilting direction from the angular velocity of the upper body with a single sensor and fixed mounting points for the purpose of actual use in the nursing field. Assuming that differences in this velocity in the upper body forward tilting direction arise from differences between squat lifting and stoop lifting are performed, the threshold is calculated through formulation and simulation. To validate the calculated threshold, experiments were conducted on 5 healthy adult subjects using the stoop and squat lifting methods to see if the threshold could be used to distinguish between the two methods.
ISSN:2474-2325
DOI:10.1109/SII58957.2024.10417262