Research On Impact Of Fixed And Non-fixed Foot Orthoses On Fatigue Of Limb Muscles

In the development of user experience, functional aspects of the product is often used as the focus of attention, and environmental factors are often overlooked. At the same time study of fatigue is even more facile. As a kind of special product, medical devices and health are closely related. It is very important to fatigue research on the development of medical products.Based on such a large number of nervous system diseases, the number of limb dysfunction caused by foot drop and the number of fatality rate decline has become the trend of increase gradually. In this paper, the product is the targeted on the ankle foot orthoses which have specific application in recovery rehabilitation and is easy to use and effective.In the applied research of ankle foot orthoses, the application of the treatment and rehabilitation link people will be evaluated.Because the market of ankle foot orthoses is active and competitive, there will be imperfect market norms. The ranges of product application overlap in the evaluation and selection of products. Starting from the elements of the product to compare and consider the user experience research is relatively lacking. Fatigue has become a serious factor for user feedback in the rehabilitation effect and user experience in the process of the recovery of disease.The main work and innovation of this paper:The research focuses on the two types of foot orthoses(fixed type and non-fixed type) used by cerebral stroke patients for foot drop treatment. The aim is to find their impacts on the fatigue of the main muscles on lower limbs. The article makes a in-depth understanding of the research results of modern medicine and exercise-induced muscle fatigue in the field of human-computerinteraction. The paper makes a main product introduction of the ankle foot orthoses, related mechanism, process and limb situation. It is presented that causes of sports fatigue, research method of muscle fatigue and gait analysis. We received product different points and fatigue object. At the same time, we selected test for fatigue assessment. In the next part, some factors from the subjects of the test, such as the experimental variable, data acquisition and something considering for the test, in order to ensure the experimental work smoothly was be presented.In concrete experiment, by adopting the different forms of ankle foot orthoses for lower limbs, shares the biceps femoris muscle rectus, tibialis anterior muscle and gastrocnemius respectively corresponds to the electromyographic signal. In specific experiment, it is concluded that two kinds of orthoses contrast between the degree of muscle fatigue by taking electromyographic signal of the biceps, shares of rectus, tibialis anterior muscle and gastrocnemius. In experiments the specific time domain index is the average frequency and the frequency domain index is the average frequency.The results show that when wearing non-fixed orthoses the shank muscles receive recovery and the cooperation between the thigh and shank muscles improves. Also it is noticeable that long-time walking rehab training in orthoses can result in fatigue.When wearing fixed orthoses, the activity of the shank muscle is not obvious, and the participation of thigh muscles does not differ a lot from that in non-fixed type. The activity level has a significant different comparing with the situation when there is not any orthoses limiting the ankle movements. The cooperation of thigh and shank muscles is relatively poor during walking.And the thigh muscles tend to develop fatigue over time. The article from the Angle of the fatigue evaluated means of interaction experience about medical devices and aim to make better guide the product design.