Chu, YHYHChuTang, PFPFTangLu, TWTWLuLin, KHKHLin2010-10-012018-07-082010-10-012018-07-082008-12http://ntur.lib.ntu.edu.tw//handle/246246/208404en-USEffects of aging and direction on movement and center-of-pressure characteristics of volitional stepping.