Abstract
[Purpose]There is no established method for rolling over motion analysis using a quantitative date other than using an optical three-dimensional motion analysis device, but it is not possible to perform complete analysis for rolling over motion where it is difficult to measure markers. There are also limits. In the previous study, we categorized rolling motions by analyzing up to 90 degrees of pelvic rotation, but in clinical practice it is required to develop more convenient and practical measurement and analysis. Therefore, we examined whether it is possible to categorize the motion patterns by analyzing the motion of rolling over to 45 degrees of pelvic rotation.[Method]Rolling over movement was measured by a three-dimensional motion analysis system for 30 healthy men, and rolling over movement was classified by cluster analysis and one -way analysis of variance up to the pelvic 45 degrees rotation. After that, by comparison with previous study, the kappa coefficient was used to calculate the degree of agreement with the rolling motion patterns in the analysis up to 90 degrees of pelvic rotation.[Results]The movement patterns are classified as trunk flexion(n = 18)/extension(n = 4)/rotation(n = 8), and the agreement of the movement patterns compared with the analysis up to 90 degrees of pelvic rotation was κ = 0.66
(p <0.001), which was a sufficient agreement.[Conclusion]The classification of the rolling over movement pattern using a quantitative date is sufficiently possible by analysis up to the pelvic rotation of 45 degrees.
