Research on Evaluation Slips and Falls Base on COM Fluctuation

To investigate the frequent slips and falls in older adults of myasthenic lower extremities, a method was proposed that could analyze the process of slips and falls with the modified peak of required coefficient of friction(RCOF) and the amplitude of the body center of mass(COM). This method, based on the lower extremities dynamic model by Kane's equations, can be used to rapidly detect parameters in each gait cycle, and analyze every instantaneous balance status during walking. According to the results, the critical point thresholds of slips and falls have been judged and verified and the theoretical groundwork for slips and falls’ gaits in older adults of myasthenic lower extremities has been established. By comparing the experimental data between no myasthenia and myasthenic older people, myasthenic older people's gaits became more and more unstable because of the weak neuromuscular control. For it, slips and falls more easily occur on myasthenia older people. The experimental data show that the method can well and effectively describe the process of slips and falls.