Gait regularity assessed by wearable sensors: Comparison between accelerometer and gyroscope data for different sensor locations and walking speeds in healthy subjects.

Journal of Biomechanics
Giovanni Marco ScaleraMarco Rabuffetti

Abstract

Inertial measurement units (IMU), including accelerometers and gyroscopes, can support the assessment of gait regularity, relevant for an effective walking. Gait regularity is typically quantified by an autocorrelation analysis of trunk/pelvis accelerations. A methodological upgrade fosters a multi-sensor approach including upper and lower limbs. Very few studies dealt with gait regularity using gyroscope data and no comparison between the two inertial sensors has been published. Therefore, this study compares gait regularity assessment by autocorrelation analyses performed on accelerometer and gyroscope data simultaneously acquired. Twenty-five adult healthy subjects walked steady-state on treadmill at three speeds (3.6, 5.0, 6.4 km/h), with rest between. Four IMUs were firmly attached on the trunk, pelvis, wrist and ankle. The autocorrelation method was applied to time-windows of the signal vector magnitude and resulted, on average for each trial, in its regularity index (RI) and periodicity index (PI), i.e. the stride time. Results showed that both sensors identified the same PI (Spearman correlation coefficient = 0.999), and evidenced that, for matched sensor locations and gait speeds, the accelerometer-based RI was larger/...Continue Reading

References

Sep 26, 2002·Gait & Posture·Bernard AuvinetEric Barrey
Dec 16, 2003·Journal of Biomechanics·Rolf Moe-Nilssen, Jorunn L Helbostad
Aug 13, 2005·Journal of Neuroengineering and Rehabilitation·Olivier BeauchetReto W Kressig
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Jan 21, 2010·Journal of Neuroengineering and Rehabilitation·Andrea TuraLorenzo Chiari
Apr 22, 2014·Journal of Neuroengineering and Rehabilitation·Ilaria CarpinellaMaurizio Ferrarin
Jul 6, 2014·Journal of Neuroengineering and Rehabilitation·Hiromitsu KobayashiTasuku Kimura
Sep 23, 2016·Physiological Measurement·M RabuffettiM Ferrarin
Dec 23, 2016·Frontiers in Human Neuroscience·John M BardenOlivier Beauchet
Apr 15, 2017·Frontiers in Human Neuroscience·Fausto G Baldissera, Luigi Tesio
Dec 19, 2018·Gait & Posture·Ayumi TanigawaMasaki Takahashi

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