Pubblicazioni

Autori:

Ferrari, Luca; Bochicchio, Gianluca; Bottari, Alberto; Scarton, Alessandra; Lucertini, Francesco; Pogliaghi, Silvia

Titolo:

Construct Validity of a Wearable Inertial Measurement Unit (IMU) in Measuring Postural Sway and the Effect of Visual Deprivation in Healthy Older Adults

Anno:

2024

Tipologia prodotto:

Articolo in Rivista

Tipologia ANVUR:

Articolo su rivista

Lingua:

Inglese

Formato:

Elettronico

Referee:

Sì

Nome rivista:

BIOSENSORS

ISSN Rivista:

2079-6374

N° Volume:

14

Numero o Fascicolo:

11

Intervallo pagine:

1-9

Parole chiave:

aging; balance; inertial sensors; postural control; risk of falls

Breve descrizione dei contenuti:

Inertial Motor sensors (IMUs) are valid instruments for measuring postural sway but their ability to detect changes derived from visual deprivation in healthy older adults requires further investigations. We examined the validity and relationship of IMU sensor-derived postural sway measures compared to force plates for different eye conditions in healthy older adults (32 females, 33 males). We compared the relationship of the center of mass and center of pressure (CoM and CoP)-derived total length, root means square (RMS) distance, mean velocity, and 95% confidence interval ellipse area (95% CI ellipse area). In addition, we examined the relationship of the IMU sensor in discriminating between open- (EO) and closed-eye (EC) conditions compared to the force plate. A significant effect of the instruments and eye conditions was found for almost all the variables. Overall, EO and EC variables within (force plate r, from 0.38 to 0.78; IMU sensor r, from 0.36 to 0.69) as well as between (r from 0.50 to 0.88) instruments were moderately to strongly correlated. The EC:EO ratios of RMS distance and 95% CI ellipse area were not different between instruments, while there were significant differences between total length (p = 0.973) and mean velocity (p = 0.703). The ratios' correlation coefficients between instruments ranged from moderate (r = 0.65) to strong (r = 0.87). The IMU sensor offers an affordable, valid alternative to a force plate for objective, postural sway assessment.

Pagina Web:

https://doi.org/10.3390/bios14110529

Id prodotto:

142924

Handle IRIS:

11562/1146368

ultima modifica:

11 gennaio 2025

Citazione bibliografica:

Ferrari, Luca; Bochicchio, Gianluca; Bottari, Alberto; Scarton, Alessandra; Lucertini, Francesco; Pogliaghi, Silvia, Construct Validity of a Wearable Inertial Measurement Unit (IMU) in Measuring Postural Sway and the Effect of Visual Deprivation in Healthy Older Adults «BIOSENSORS» , vol. 14 , n. 11 , 2024 , pp. 1-9

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