Publication: Mobile Sensor Application for Kinematic Detection of the Knees
0
0
Issued Date
2015
Resource Type
Language
eng
File Type
application/pdf
Access Rights
open access
Rights
ผลงานนี้เผยแพร่ภายใต้ สัญญาอนุญาตครีเอทีฟคอมมอนส์แบบ แสดงที่มา-ไม่ใช้เพื่อการค้า-ไม่ดัดแปลง 4.0 (CC BY-NC-ND 4.0)
Rights Holder(s)
มหาวิทยาลัยศรีนครินทรวิโรฒ
Bibliographic Citation
Ann Rehabil Med 2015;39(4):599-608
Suggested Citation
Tossaphon Jaysrichai, Areerat Suputtitada, Watcharapong Khovidhungij Mobile Sensor Application for Kinematic Detection of the Knees. Ann Rehabil Med 2015;39(4):599-608. doi:https://doi.org/10.5535/arm.2015.39.4.599 Retrieved from: https://hdl.handle.net/20.500.14740/11797
Organization
Abstract
Objective
To correctly measure the knee joint angle, this study utilized a Qualisys motion capture system and also used it as the reference to assess the validity of the study's Inertial Measurement Unit (IMU) system that consisted of four IMU sensors and the Knee Angle Recorder software. The validity was evaluated by the root mean square (RMS) of different angles and the intraclass correlation coefficient (ICC) values between the Qualisys system and the IMU system.
Methods
Four functional knee movement tests for ten healthy participants were investigated, which were the knee flexion test, the hip and knee flexion test, the forward step test and the leg abduction test, and the walking test.
Results
The outcomes of the knee flexion test, the hip and knee flexion test, the forward step test, and the walking test showed that the RMS of different angles were less than 6°. The ICC values were in the range of 0.84 to 0.99. However, the leg abduction test showed a poor correlation in the measurement of the knee abduction-adduction movement.
Conclusion
The IMU system used in this study is a new good method to measure the knee flexion-extension movement.