Effect of Step Length and Walking Speed on Traction Coefficient and Slip between Shoe Sole and Walkway

Yamaguchi, Takeshi; Hatanaka, Shintaro; Hokkirigawa, Kazuo

doi:10.2474/trol.3.59

Cited by 23 publications

(12 citation statements)

References 10 publications

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“…Step length has different values among the literature data. As reported in [22], the average step length is around 0.75 m for healthy adults walking at their self-selected normal speed of about 1.4 m/s, while, as reported in [23], the average step length varies with gender, which is about 0.79 m for males and 0.66 m for females.…”

Section: Step Lengthsmentioning

confidence: 75%

Applications of MEMS Gyroscope for Human Gait Analysis

Zhao¹,

Qiu²,

Wang³

et al. 2020

Gyroscopes - Principles and Applications

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After decades of development, quantitative instruments for human gait analysis have become an important tool for revealing underlying pathologies manifested by gait abnormalities. However, the gold standard instruments (e.g., optical motion capture systems) are commonly expensive and complex while needing expert operation and maintenance and thereby be limited to a small number of specialized gait laboratories. Therefore, in current clinical settings, gait analysis still mainly relies on visual observation and assessment. Due to recent developments in microelectromechanical systems (MEMS) technology, the cost and size of gyroscopes are decreasing, while the accuracy is being improved, which provides an effective way for qualifying gait features. This chapter aims to give a close examination of human gait patterns (normal and abnormal) using gyroscope-based wearable technology. Both healthy subjects and hemiparesis patients participated in the experiment, and experimental results show that foot-mounted gyroscopes could assess gait abnormalities in both temporal and spatial domains. Gait analysis systems constructed of wearable gyroscopes can be more easily used in both clinical and home environments than their gold standard counterparts, which have few requirements for operation, maintenance, and working environment, thereby suggesting a promising future for gait analysis.

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Section: Step Lengthsmentioning

confidence: 75%

Applications of MEMS Gyroscope for Human Gait Analysis

Zhao¹,

Qiu²,

Wang³

et al. 2020

Gyroscopes - Principles and Applications

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show abstract

“…Most studies on slips and falls have been conducted through gait trials, wherein subjects walk along a straight line at a constant speed (steady-state movement) (Burnfield and Powers, 2007;Fong et al, 2009;Yamaguchi et al, 2008). However, an individual may slip more frequently during transient movements such as turning, in which walking speed and direction are changed, than during steady-state movements such as linear walking, in which speed remains constant.…”

Section: Introductionmentioning

confidence: 98%

Effect of turning angle on falls caused by induced slips during turning

Yamaguchi

Yano

Oda

et al. 2012

Journal of Biomechanics

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“…In running and walking, slips will not occur theoretically as long as traction coefficient at the shoe-ground contact interface is smaller than the friction coefficient. Previous studies have discussed these, which cause falls due to induced slips during walking [1][2][3]. These studies have demonstrated that center of mass position and hip movement in vertical direction relate to the slip onset during walking on slippery surfaces.…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis of the Distribution of Traction Coefficient in the Shoe-Ground Contact Area during Running

2012

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Relationship between shoe grip properties and distributions of traction coefficient, which is obtained from horizontal ground reaction force (GRF) divided by normal GRF, were experimentally investigated during running. The experiments were conducted with sensor shoes mounted miniature triaxial force sensors for the measurement of GRF distributions in contact area. In order to clarify influence of the grip property on GRF vectors distributions and traction coefficient distributions, two typed sensor shoes having different outer sole materials with high/low friction coefficients were developed. The results showed that traction coefficients for the low grip typed shoe decreased in the whole contact area at the end of stance phase during running. Furthermore, it was confirmed that contact area, directions of GRF vectors and traction coefficients locally changed depending on the grip property. As a result of relationship between distributions of propulsion force components at 19 local positions and stride length, production of propulsion force beneath toe area can efficiently acquire sufficient stride length to keep running speed.

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Effect of Step Length and Walking Speed on Traction Coefficient and Slip between Shoe Sole and Walkway

Cited by 23 publications

References 10 publications

Applications of MEMS Gyroscope for Human Gait Analysis

Applications of MEMS Gyroscope for Human Gait Analysis

Effect of turning angle on falls caused by induced slips during turning

Experimental Analysis of the Distribution of Traction Coefficient in the Shoe-Ground Contact Area during Running

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