Biomechanical Analysis Of Gait Characteristics Of Staring Mobile Phone Walking

Smart phones have become an indispensable part of people's daily life.People use mobilephones in daily activities(such as walking)more and more common.When walking,staring at the mobile phone will take up part of the visual cognition,which leads to the pedestrian's inability to fully focus on observing the surrounding traffic information,so it may increase the risk of falling or traffic accidents.The purpose of this study is to explore and analyze the kinematic parameters of the lower limbs and the dynamic parameters of the plantar pressure zones of pedestrians when walking with and without mobile phones,so as to reveal the changes of human gait characteristics brought by mobile phone operation during pedestrian walking,and analyze the impact of mobile phone operation on gait during pedestrian walking,so as to effectively reduce the use of mobile phones during pedestrian walking Provide theoretical basis.Research methods: using three-dimensional motion analysis system and plantar pressure test system to collect the kinematic and dynamic data of 20 college students who have the habit of using mobile phones when walking with and without mobile phones.Conclusion:(1)in a complete gait cycle,compared with walking without mobile phone,staring at mobile phone will change the gait characteristics of the subjects in different degrees,specifically,the gait cycle is significantly increased,and the change of female students' gait cycle is greater than that of male students;the step length is increased,the step width and the angle between left and right feet of male students are significantly increased,while the step width and the angle between feet of female students are not significantly increased.(2)The subjects' trunk angle increases when they gaze at the mobile phone,but there is no significant change between the single handhold mobile phone and the normal walking,and there is significant change between the two handhold mobilephone and the normal walking;in terms of the change of the angle of the main joints of the lower limbs,the changes of the knee joint and ankle joint of the boys are more obvious,and the changes of the hip joint and ankle joint of the girls are more obvious.(3)Compared with walking without mobile phone,the peak pressure of the sole of the foot changes obviously in the fourth and fifth metatarsals,the medial area of the heel,and the lateral area of the heel when the boys gaze at the mobile phone,while in the first phalanges,the fourth metatarsals and the lateral area of the heel when the girls walk without mobile phone.The change of the contact area of the sole of the foot was mainly concentrated in the heel area of the subjects,the fourth and the fifth metatarsal areas of the boys,the second and the fifth Phalanges areas of the boys when walking with both hands holding mobile phones,and the second and the third Phalanges areas of the girls when walking with both hands holding mobile phones.(4)Compared with walking without mobile phone,the impulse of the foot bottom of boys' staring mobile phone walking is in the second to fifth phalanges,the fourth and fifth metatarsals,the first to fifth phalanges,the first and second metatarsals,and the medial heel.Abnormal plantar impulse may lead to the imbalance of plantar muscle strength distribution and fatigue injury of some muscles.