Reappearance of Accelerography and Effects of Wedged Insole on the Knee with an Accelerometric Technique.

Nomiyama, Hiroshi; Ogata, Kousuke; Yasunaga, Masakatsu

doi:10.5035/nishiseisai.42.1041

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…To compare the waveforms of acceleration and displacement during walking, the fact that the first-order integration of the acceleration waveform is the velocity and the second-order integration is the displacement was utilized. To obtain the velocity and displacement from the digital acceleration data, the data at each gait cycle should be repeatedly corrected and integrated, which is considered to be poorly reproducible [22]. In this study, even the vertical position data, which had good agreement with the waveforms, had some misalignments, as observed after 2.5 s in Fig.…”

Section: Discussionmentioning

confidence: 90%

Comparison of Gait Analysis Between a Triaxial Accelerometer-Based Device and an Optical Motion Capture System

Ito¹,

Ota²

2020

Preprint

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AYUMI EYE is an accelerometer-based gait analysis device that measures the 3D accelerations of the human trunk. This study investigated the measurement accuracy of the AYUMI EYE as hardware as well as the accuracy of the gait cycle extraction program via simultaneous measurements using AYUMI EYE, a ground reaction force (GRF), and an optical motion capture system called VICON. The study was conducted with four healthy individuals as participants. The gait data were obtained by simulating four different patterns for three trials each: normal walking, anterior-tilt walking, hemiplegic walking, and shuffling walking. The AYUMI EYE and VICON showed good agreement for both the acceleration and displacement data. The durations of subsequent stride cycles calculated using the AYUMI EYE and GRF were in good agreement based on the calculated cross-correlation coefficients (CCs) with an r value of 0.896 and p-value less than 0.05, and their accuracies for these results were sufficient.

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Section: Discussionmentioning

confidence: 90%

Comparison of Gait Analysis Between a Triaxial Accelerometer-Based Device and an Optical Motion Capture System

Ito¹,

Ota²

2020

Preprint

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Investigation of the Reproducibility of a 3D Accelerometer-Based Gait Analysis System of the Tibia

et al. 2010

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To determine the test-retest reliability of an accelerometer-based gait analysis system which measures 3D accelerations of the tibia. [Subjects] The study subjects were 10 healthy individuals. [Methods] Accelerations were measured during comfortable and regulated speed walking using a triaxial accelerometer mounted on the head of the fibula and lateral malleous of the subjects. Peak acceleration, time from the initial contact to peak acceleration and acceleration at initial contact during the stance phase in each direction (vertical, anterior-posterior, and mediolateral) were analyzed. [Results] By the test-retest method the average of intraclass correlation coefficients (1.1), peak acceleration and time from the initial contact to peak acceleration of comfortable speed were better than those of regulated speed. [Conclusion] We conclude that these parameters have reasonable reliability and objectivity for evaluating abnormal motion and instability of the knee joint during comfortable walking.

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Open wedge HTOにおける術後膝側方動揺性に影響を与えるX線因子の検討

長松¹,

石松²,

工藤³

et al. 2021

Orthopedics & Traumatology

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Reappearance of Accelerography and Effects of Wedged Insole on the Knee with an Accelerometric Technique.

Cited by 3 publications

References 2 publications

Comparison of Gait Analysis Between a Triaxial Accelerometer-Based Device and an Optical Motion Capture System

Comparison of Gait Analysis Between a Triaxial Accelerometer-Based Device and an Optical Motion Capture System

Investigation of the Reproducibility of a 3D Accelerometer-Based Gait Analysis System of the Tibia

Open wedge HTOにおける術後膝側方動揺性に影響を与えるX線因子の検討

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