Estimation of the ankle power during the terminal stance of gait using an inertial sensor

Abstract

[Purpose] The purpose of this study was to develop an assessment tool that reflects the ankle function during the terminal stance of gait using an inertial sensor. [Participants and Methods] Thirteen healthy males (20 limbs) participated in this study. All the participants were required to perform five straight-line walking trials along a 10-m level walkway. During the terminal stance phase, both the anterior-posterior and vertical accelerations were measured with an inertial sensor mounted on the fibular head. The Pythagorean theorem was used to calculate the acceleration vector. A three-dimensional gait analysis system was used for movement data acquisition. All statistical analyses were performed using IBM SPSS Statistics 24.0 for Windows. [Results] Results were obtained using the following multiple regression equation for the estimation of ankle plantar flexion power: Estimated Ankle Power=−4.689 + 0.269 × vertical acceleration + 0.104 × body weight. [Conclusion] Our novel method for gait analysis using an inertial sensor can assess the ankle power during the terminal stance phase of gait.

Inertial Motion Capture-Based Wearable Systems for Estimation of Joint Kinetics: A Systematic Review

“…Among these, the most evaluated activity was walking, which is a fundamental human movement. In 29 of the 46 selected papers, level walking was included in the experimental motions [ 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 ], and 23 of these discussed only walking [ 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 ]. While most of thes...…”

“…[ 49 , 58 ] trained a normalized linear regression model using the least absolute shrinkage and selection operator, often abbreviated as LASSO. Miyashita et al [ 47 ] used multiple regression analysis and Iwama et al [ 53 ] used linear regression analysis.…”

Assessment of walking disorder in community-dwelling Japanese middle-aged and elderly women using an inertial sensor

“…In our previous study ( Miyashita, Kudo & Maekawa, 2019 ) using an inertial sensor we developed a method to calculate the estimated plantar flexors power from acceleration during the walking terminal stance. The target of analysis was the acceleration peak value from accelerometer data from which we estimated ankle power (estimated ankle power).…”

“…To overcome this problem, we developed a novel method for gait analysis using an inertial sensor to assess function of the ankle during the terminal stance phase of gait ( Miyashita, Kudo & Maekawa, 2019 ). The validity of this method was verified using a three-dimensional motion analysis system.…”

“…We measured when vertical acceleration (Ay) peaked from heel-off (HO) to toe-off (TO) during the terminal stance phase. The estimated ankle power can be calculated from the acceleration (Ay) peak value obtained using the multiple regression equation ( Miyashita, Kudo & Maekawa, 2019 ).…”