Validity And Reliability of Wearable Motion Sensors in Knee Joint Range of Motion Measurement
NCT Number: NCT06537830
Status: COMPLETED
Study Type: OBSERVATIONAL
Conditions: Range of Motion|Knee
Sponsor: Halic University
Sex: ALL
Age: ADULT
Enrollment: 70
Study Design: Observational Model: |Time Perspective: p
Start Date: 2021-12-15
Completion Date: 2022-07-15
Locations: Halic University, Istanbul, 34445, Turkey

Summary:
Objective: The aim of this study is to examine the validity and reliability of a wearable motion sensor, which is an inertial measurement units (IMUs) sensor, in measuring knee joint active flexion movement angles.

Methods: The study included 70 Health Sciences Faculty students between the ages of 18-25. The dominant knee joint range of motion of the participants was measured by two raters with a digital goniometer (Meloq EasyAngle) and wearable motion sensors (MetaMotionRL). A 10-minute rest was given between each measurement. The data were analyzed using the IBM® SPSS® Statistics for Windows software (Version 27.0). Mean ± standard deviation (Mean ± SD) and percentage (%) were used for the descriptive variables. Intra- and inter-rater reliability was tested with intraclass correlation coefficient (ICC) and Bland-Altman analysis. ICC values less than 0.5 were classified as poor, values between 0.5 and 0.75 as moderate, values between 0.75 and 0.9 as good, and values greater than 0.90 as excellent reliability. Paired samples t test was used to compare test-retest measurements. Concurrent validity was determined by Pearson correlation coefficient. The significance value was accepted as p\<0.05.

Primary Outcome Measures: Digital goniometer measurement, Participants were asked to wear shorts that exposed their knees. While the participants were lying in the prone position on the examination table, their dominant knee range of motion was measured with EasyAngle (Meloq©, Stockholm, Sweden) digital goniometer by physiotherapists (rater I). The participant was instructed to bend his knee and bring his heel as close to his hip as possible. The degree of dominant knee active flexion was measured three times by the rater I with a EasyAngle (Meloq©, Stockholm, Sweden) digital goniometer (the pivot point was determined as the lateral epicondyle of the femur), and the highest value was recorded., at baseline|MetaMotionRLs measurement, Two MetaMotionRLs were fixed to the lateral thigh and leg with velcro strap, at the level of the midpoint of the tibia and femur in the dominant lower extremity by the rater I. Two MetaMotionRL motion sensors were used simultaneously. MetaMotionRL was used by connecting via Bluetooth with the free MetaROM (application) smart phone application. The participant was asked to flex his knee as much as possible. Three measurements were made and the highest value shown in the app was recorded. Following this, the sensors were removed and placed again after 10 minutes and measured a second time by the same rater using the same method, the highest value was recorded. Following removal of the sensors, the participant was taken to a different examination table in the same room. And the rater II placed the sensors and repeated the MetaMotionRL measurement., at baseline