Reliability and validity of an innovative method of ROM measurement using Microsoft Kinect V2
Abstract
Measuring
Range of Motion (ROM) is the first step of physical therapy. A new method to
measure ROM by Kinect V2 whose camera type is time of flight is proposed.
Colored markers are attached to related joints and then their camera centered
three-dimensional world coordinates are located by Kinect. Using these coordinates,
joint angle, and ROM can be accurately calculated. To analyze reliability and
validity of the method, ROM measurements of right and left elbow from ten
participants are taken by standard goniometer and Kinect separately. For
inter-observer reliability, measurements were taken in two sessions by three
physiotherapists. The reliability tests Intra-class Correlation Coefficient
(ICC), Standard Error of Measure (SEM), and Minimal Detectable Change (MDC)
belonging to the measurements have been obtained. To compute absolute accuracy
of the method, a goniometer marked with colors has been recorded at four
different angles (45, 90, 135, and 180° ) by Kinect in six sessions having
50-frame periods each. Mean, Standard Deviation (SD), Root Mean Square Error
(RMSE), and Limits of Agreement (LOA) values are given for each angle and
session. The measurements taken for absolute accuracy clearly shows that Kinect
has 1- to 3-degree error rate and below 1-degree standard deviation. Analyzing
the collected data, the ICC values of Kinect measurements that are 0.94 for
right arm and 0.93 for left arm in contrast with the ICC values of goniometric
measurements taken by observers are 0.78 for the right arm and 0.81 for the
left arm. This study indicates the proposed method has a high level of accuracy
and reliability, and it can be efficiently used to measure ROM accurately.
Keywords
References
- Nussbaumer S, Leunig M, Glatthorn JF, Stauffacher S, Gerber H, Maffiuletti NA. “Validity and test-retest reliability of manual goniometers for measuring passive hip range of motion in femoroacetabular impingement patients”. BMC Musculoskeletal Disorder, 11(194), 2-11, 2010.
- Gajdosik RL, Bohannon RW. “Clinical measurement of range of motion. Review of goniometry emphasizing reliability and validity”. Physical Therapy, 67(12), 1867-72, 1987.
- Zhou H, Hu H. “Human motion tracking for rehabilitation-a survey”. Biomedical Signal Processing and Control, 3(1), 1-18, 2008.
- Morris RG, Lawson SEM. “A review and evaluation of available gait analysis technologies and their potential for the measurement of impact transmission”. 2010.
- Huber M, Seitz AL, Leeser M, Sternad D. “Validity and reliability of Kinect skeleton for measuring shoulder joint angles: a feasibility study”. Physiotherapy, 101(4), 389–393, 2015.
- Bo APL, Hayashibe M, Poignet P. “Joint angle estimation in rehabilitation with inertial sensors and its integration with kinect”. 33rd Annual International Conference of the IEEE EMBS, Boston, Massachustts, USA, 30 August-03 September 2011.
- Choppin SB, Lane B, Wheat JS. “The accuracy of the Microsoft Kinect in joint angle measurement”. Sports Technology, 7(1-2), 98-105, 2014.
- Schmitz A, Boggess MY, Shapiro GR, Yang R, Noehren B. “The measurement of in vivo joint angles during a squat using a single camera markerless motion capture system as compared to a marker based system”. Gait Posture, 41(2), 694–698, 2015.
Details
Primary Language
English
Subjects
Engineering
Journal Section
Research Article
Authors
Fahri Köroğlu
This is me
0000-0002-3917-9832
Mustafa Yığılıtaş
This is me
0000-0001-6669-2132
Publication Date
October 12, 2018
Submission Date
March 6, 2017
Acceptance Date
-
Published in Issue
Year 2018 Volume: 24 Number: 5