Development and design support through human and life engineering (shoes for wearing and use)

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last updated：Jun 21, 2021

HALデザイン研究所

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It is possible to evaluate how changes in the material, shape, and composition of insoles and the underside affect muscle strain and walking posture.

**Evaluation by Human and Life Engineering** ■ Evaluation Method We prepare various specifications for evaluation and evaluators as shown below, and conduct evaluations according to the evaluation items. ■ Evaluators We can provide elderly individuals, young individuals, men, and women. ■ Evaluation Subjects Various insoles and the materials, shapes, and structures of the underside. ■ Walking Pace (number of steps per minute) - Free walking - Normal pace (normal walking speed (2 steps/second)) - Fast pace (10% faster than normal walking speed) ■ Evaluation Items (1) Subjective Evaluation - Ease of walking - Physical burden - Impact on walking style (stability, instability, body sway, etc.) (2) Muscle Burden We measure the muscle burden at seven locations, including the erector spinae (for details, please refer to the basic information). (3) Foot Pressure Distribution We measure the pressure distribution on the soles of the feet. (4) Walking Posture We measure the walking posture of individuals using our developed markerless 3D motion measurement system (product name: Anakin). **Expected Outcomes** Insights will be gained regarding the relationship between subjective evaluations and the following items: - Shoes - Muscle burden - Foot pressure distribution - Walking posture

Related Link - http://www.hal-design.com/index.html

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basic information

【Measured Muscles】 - Erector spinae, gluteus maximus, hamstrings, rectus femoris, tibialis anterior, soleus, abductor hallucis Please refer to the attached document for the functions of each muscle during walking and the installation status of the electromyography sensors. 【Foot Pressure Distribution】 Using pressure sensors, we can understand the pressure distribution occurring on the soles of the feet and how it changes with walking. Specifically, please refer to the attached document for measurement examples. 【Walking Posture】 Immediately after walking, we can determine walking speed, stride length, and cadence. Furthermore, we can assess walking posture (whether leaning forward or backward, swaying side to side or front to back, and the balance of arm swing and knee angles). For more details, please refer to the attached document, including measurement examples. 【Weight Loss Effects of Walking Shoes】 When comparing walking speeds between shoes with high muscle strain and those with low muscle strain, it was found that the former had a greater walking speed. The results are shown in the attached document.