Comprehensive Characterization Of Lower Limb Muscle Strength On Different Environment

Medical rehabilitation aids can significantly optimize the physical capacity of vulnerable groups,the elderly and other vulnerable groups significantly,and enhance their self-care and social integration.With the continuous innovation of science and technology,medical rehabilitation aids also put forward to the higher requirements of intelligent iteration.But how to obtain the gait information of the human body and use it in the auxiliary control system design is the urgent problem to be solved.EMG signal can reflect the muscle activation state better in the body movement.that can be used as an important gait analysis.In this paper,we conducted a series of experimental studies on the activation characteristics of lower limb muscles in different trachea environment.After analyzing the significant differences of different muscle groups at different time points,the kinematics of hip,knee and ankle were used for qualitative analysis,and reveals the muscle strength in the walking on the body posture and lower limb body control mechanism finally.This study use the Telemyo 2400 DTS wireless surface EMG telemetry produced by Noraxon Corporation of the United States collected 20 healthy men in the straight,curve,slope,stairs and other walking environment,the lower limbs are mainly involved in the surface of the muscle EMG Signal,and in the subsequent analysis of extraction of EMG amplitude,electromyography and muscle activation delay time and other parameters.The main contents of this paper include the following three aspects:First,the timing of the activation of the lower limb muscle,the contribution size and the main muscle strength of each joint were studied,and the systematic and detailed characteristics were obtained.Secondly,the difference of surface EMG of lower limb muscle group at different time was studied.The AMP of the affected muscle was analyzed by one-way ANOVA.The differences of the surface EMG characteristics of the affected muscle under different conditions were studied.Finally,based on the results of significant difference analysis,combined with the hip,knee and ankle joint kinematics,qualitative analysis of the pacing environment of muscle strength on the body’s attitude control mechanism.The results can provide detailed theoretical basis for EMG related research in gait analysis in the future,and have a great significance in the field of industrial product design,especially the design of anthropomorphic intelligent accessory based on bionics.