The human body sways continuously to maintain balance while a person is standing upright. This paper describes a method for adjusting biomechanics platform measures of sway for balance during quiet standing. Ten healthy men between the age of 23 and 35 participated. Area and zero crossings measures of sway were determined in double and single leg stance. Results indicated that: ⸁ No significant difference was found on mediolateral sway frequency and anteroposterior sway frequency during two-legged stance(p>0.05), ⸂ The postural sway in a mediolateral direction increased significantly with onelegged stance(p<0.05). However, there was no significant difference of frequency and traveled area between each side of leg(p>0.05). It is recommended that this study provides a useful data for future research of the postural abnormalities of disabled patients as another method in the computer aided implementation.
