This paper reports the problems that elderly people have when they stand up from a chair, and proposes an adequate standing-up procedure that solves these problems. The important points for an adequate standing-up pro...This paper reports the problems that elderly people have when they stand up from a chair, and proposes an adequate standing-up procedure that solves these problems. The important points for an adequate standing-up procedure are ＂leaning the upper body forward＂ and ＂pulling the legs to the side＂. Furthermore, this paper proposes a standing-up support tool. The characteristics of the support tool are a cushion-type shape with an adjustable flange and an air-pressure-driven mechanism. When the proposed standing-up procedure and support tool are applied to elderly people, the measured values related to standing-up, such as maximum acceleration, arm force, standing-up time, heel position and forward-bending angle, are improved. Furthermore, elderly people felt that it made the standing-up action easy. We could confirm the effectiveness of the proposed standing-up procedure and support tool.展开更多
OpenPose(OP)and DeepLabCut(DLC)are applications that use deep learning to estimate posture,but there are few reports on the reliability,validity,and accuracy of their 2D lower limb joint motion analysis.This study com...OpenPose(OP)and DeepLabCut(DLC)are applications that use deep learning to estimate posture,but there are few reports on the reliability,validity,and accuracy of their 2D lower limb joint motion analysis.This study compared OP and DLC estimates of lower extremity joint angles in standing movements with those of conventional software.A total of nine healthy men participated.The trial task was to stand up from a chair.The motion was recorded by a digital camera,and the joint angles of the hip and knee joints were calculated from the video using OP,DLC,and Kinovea.To confirm reliability and validity,ICC was calculated using the Kinovea value as the validity criterion and the correlation coefficient between OP and DLC.In addition,the agreement between those data was evaluated by the Bland-Altman plot.To evaluate the accuracy of the data,root means square error(RMSE)was calculated and compared for each joint.Although the correlation coefficients and ICC(2,1)were in almost perfect agreement,fixed and proportional errors were found for most joints.The RMSE was smaller for OP than for DLC.Compared to Kinovea,OP and DLC can estimate the joint angles of the hip and knee joints during the stand-up movement with an estimation error of fewer than 10,but since they are affected by the resolution of the analysis video and other factors,they need to be validated in a variety of environments and with a variety of movements.展开更多
文摘This paper reports the problems that elderly people have when they stand up from a chair, and proposes an adequate standing-up procedure that solves these problems. The important points for an adequate standing-up procedure are ＂leaning the upper body forward＂ and ＂pulling the legs to the side＂. Furthermore, this paper proposes a standing-up support tool. The characteristics of the support tool are a cushion-type shape with an adjustable flange and an air-pressure-driven mechanism. When the proposed standing-up procedure and support tool are applied to elderly people, the measured values related to standing-up, such as maximum acceleration, arm force, standing-up time, heel position and forward-bending angle, are improved. Furthermore, elderly people felt that it made the standing-up action easy. We could confirm the effectiveness of the proposed standing-up procedure and support tool.
文摘OpenPose(OP)and DeepLabCut(DLC)are applications that use deep learning to estimate posture,but there are few reports on the reliability,validity,and accuracy of their 2D lower limb joint motion analysis.This study compared OP and DLC estimates of lower extremity joint angles in standing movements with those of conventional software.A total of nine healthy men participated.The trial task was to stand up from a chair.The motion was recorded by a digital camera,and the joint angles of the hip and knee joints were calculated from the video using OP,DLC,and Kinovea.To confirm reliability and validity,ICC was calculated using the Kinovea value as the validity criterion and the correlation coefficient between OP and DLC.In addition,the agreement between those data was evaluated by the Bland-Altman plot.To evaluate the accuracy of the data,root means square error(RMSE)was calculated and compared for each joint.Although the correlation coefficients and ICC(2,1)were in almost perfect agreement,fixed and proportional errors were found for most joints.The RMSE was smaller for OP than for DLC.Compared to Kinovea,OP and DLC can estimate the joint angles of the hip and knee joints during the stand-up movement with an estimation error of fewer than 10,but since they are affected by the resolution of the analysis video and other factors,they need to be validated in a variety of environments and with a variety of movements.
