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Technical Brief

Soft Actuating Sit to Stand Trainer Seat

[+] Author and Article Information
Azmall Fraiszudeen

Department of Biomedical Engineering, 4 Engineering Drive 3, Engineering Block 4(E4) #04-08, Singapore 117583
bieaf@nus.edu.sg

Chen-Hua Yeow

Department of Biomedical Engineering, 4 Engineering Drive 3, Engineering Block 4(E4) #04-08, Singapore 117583
rayeow@nus.edu.sg

1Corresponding author.

ASME doi:10.1115/1.4041630 History: Received March 30, 2017; Revised September 28, 2018

Abstract

In this paper, we propose a novel type of soft robot for STS training, which is made with soft bellow actuators. Analysis with five healthy human subjects revealed there is a statistically significant decrease in the peak and mean muscle activation signal from 3 out of the 4 groups of lower limb muscle for sit to stand transition, namely, tibialis anterior, hamstrings and quadriceps. The peak muscle activation decreased most drastically on the quadriceps muscle group (0.726 ± 0.467 to 0.269 ± 0.334). As reduced muscle activation signal correlate to less muscular effort required by the users, the results show the effectiveness of the device in partially supporting the STS transition of the subject, which subsequently serves as an STS trainer device.

Copyright (c) 2018 by ASME
Topics: Robots , Actuators , Muscle , Signals
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