Purpose] The purpose of this study was to perform kinematic and kinetic analysis of the relationships of the lower limb joints during single-leg squatting. [Subjects] Ten healthy subjects participated in this research. [Methods] A three-dimensional motion analysis system was used to capture kinetic and kinematic data of single-leg squatting. Subjects' lower limb joint angles, joint moments, combined moments, and ground reaction forces were analyzed. The combined moment was defined as the sum of

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... the ankle varus moment and hip abduction moment. Each of the items was analyzed using linear regression analysis. [Results] The R 2 values for the COG and hip moment, and COP and ankle moment were significant. The R 2 value of the combined moment and ground reaction force was significant and larger than that of only the ankle moment. [Conclusion] The results suggest postural control in the frontal plane is similar to that in the sagittal plane.