RT Journal Article
T1 Measuring Spinal Mobility Using an Inertial Measurement Unit System: A Validation Study in Axial Spondyloarthritis.
A1 Aranda-Valera, I Concepción
A1 Cuesta-Vargas, Antonio
A1 Garrido-Castro, Juan L
A1 Gardiner, Philip V
A1 López-Medina, Clementina
A1 Machado, Pedro M
A1 Condell, Joan
A1 Connolly, James
A1 Williams, Jonathan M
A1 Muñoz-Esquivel, Karla
A1 O'Dwyer, Tom
A1 Castro-Villegas, M Carmen
A1 González-Navas, Cristina
A1 Collantes-Estévez, Eduardo
A1 On Behalf Of iMaxSpA Study Group, 
K1 axial spondyloarthritis
K1 inertial measurement unit
K1 spinal mobility
AB Portable inertial measurement units (IMUs) are beginning to be used in human motion analysis. These devices can be useful for the evaluation of spinal mobility in individuals with axial spondyloarthritis (axSpA). The objectives of this study were to assess (a) concurrent criterion validity in individuals with axSpA by comparing spinal mobility measured by an IMU sensor-based system vs. optical motion capture as the reference standard; (b) discriminant validity comparing mobility with healthy volunteers; (c) construct validity by comparing mobility results with relevant outcome measures. A total of 70 participants with axSpA and 20 healthy controls were included. Individuals with axSpA completed function and activity questionnaires, and their mobility was measured using conventional metrology for axSpA, an optical motion capture system, and an IMU sensor-based system. The UCOASMI, a metrology index based on measures obtained by motion capture, and the IUCOASMI, the same index using IMU measures, were also calculated. Descriptive and inferential analyses were conducted to show the relationships between outcome measures. There was excellent agreement (ICC > 0.90) between both systems and a significant correlation between the IUCOASMI and conventional metrology (r = 0.91), activity (r = 0.40), function (r = 0.62), quality of life (r = 0.55) and structural change (r = 0.76). This study demonstrates the validity of an IMU system to evaluate spinal mobility in axSpA. These systems are more feasible than optical motion capture systems, and they could be useful in clinical practice.
SN 2075-4418
YR 2020
FD 2020-06-24
LK https://hdl.handle.net/10668/26428
UL https://hdl.handle.net/10668/26428
LA en
DS RISalud
RD Apr 17, 2025