02 Which of the Acceleration value and a Performance Test is more Likely to Predict the Fall History of the Elderly?

Abstract

Abstract Backgrounds The Berg Balance score and others are used internationally to assess fall risk, but there are few reports of performance tests based on objective biomechanical data. Purpose The purpose of this study is to determine if acceleration values can be used to predict falls in elderly people compared to the results of performance tests. Subjective and Methods The subjects were 10 people. The age was 70 to 80 years. The male-female ratio was 3 to 7. A target is a group of at-home elderly people near Japan. The selection criterion was to be able to stand up without speech operation support understanding/ support. The study design was a cross-sectional study. The main evaluation item is the presence or absence of a fall history. The result is a composite vector of 3D accelerations at the center of the body using BBS and steps (28 cm long, 40 cm wide, 7 cm high). The acceleration was calculated by Kinect (Microsoft), Pi Recorder 4.1.0.69. Statistical analysis used IBM-SPSS. The effect of BBS and 3D acceleration data on the fall history estimation was evaluated with C statistics. Results The effect of the composite vector of the three-dimensional acceleration data on the estimation of the fall history showed a C statistic of 0.82, and significant relevance was recognized. The influence of BBS was C statistic 0.64. Conclusion By using the absolute value of the three-dimensional synthetic vector at the time of the vertical load of the elderly, it is considered that the probability of estimating the fall history may be higher than the existing performance test.