C. Peak instantaneous COM-COP inclination angles
Middle-aged and older adults showed larger instantaneous
COM-COP inclination angles (middle-aged: 3.804°, older:
4.310°) in ML direction than young adults (3.102°; P=0.003).
(Fig.4)
Significant difference of COM-COP inclination angles in
AP direction was not found among age groups (young:
12.652°, middle-aged: 12.317°, older: 13.105°; P=0.466).