Reliability analysis of inertial sensors for testing static balance of 4-to-5-year-old preschoolers
| Autor: | Yang Liu, Rulei Zhang, Wenyan Jin, Ruqiang Liu, Baolin Dong, Yongfang Qu, Lijuan Mao |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
Intraclass correlation
business.industry media_common.quotation_subject Acceleration Rehabilitation Biophysics Reproducibility of Results Angular velocity Structural engineering Inertia Accelerometer Standard deviation Inertial measurement unit Child Preschool Humans Orthopedics and Sports Medicine Child business Postural Balance Ultrasonography Balance (ability) media_common Mathematics |
| Zdroj: | Gait & Posture. 92:176-180 |
| ISSN: | 0966-6362 |
| DOI: | 10.1016/j.gaitpost.2021.11.029 |
| Popis: | Balance ability is important for preschoolers' motor and physical development. Portable accelerometers can provide resolution tests and identification of preschoolers with balance defects.Despite previous studies on the balance measures of accelerometer tests, there is a lack of complete analyses for preschoolers aged 4-5 years. In this study, we aim to verify the reliability of measuring the static balance of preschoolers in this age range based on inertia sensors for the acceleration and angular velocity moduli.Thirty children wore an inertial sensor in the 5th lumbar vertebra and completed four tests, i.e., standing on a firm surface and on a foam surface with open and closed eyes. The standard deviation of the acceleration modulus and root mean square of the angular velocity modulus were calculated. The analysis was based on the intraclass correlation coefficient (ICC) to determine the internal consistency and feasibility.The ICC of the acceleration modulus was between 0.597 and 0.683 (P 0.01), and the test-retest reliability was medium. The ICC of the angular velocity modulus was between 0.683 and 0.812 (P 0.01, P 0.001), and the test-retest reliability was medium to good. The standard error of measurement (SEM) of the acceleration modulus was between 0.001591 and 0.007248 (g), and the SEM% was between 21.24% and 34.12%. The angular velocity modulus SEM values ranged from 1.296 to 3.441 (deg/s), and the SEM% ranged from 25.17% to 33.26%. The difference between the two tests was evenly distributed on both sides of the mean value, and the difference between the test results was within the consistency limit.Inertial sensors can be used to evaluate the static balance ability of preschoolers aged 4-5 years. Further, the angular velocity modulus is more reliable than the acceleration modulus. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect