Preliminary study of effect of breast displacement on bra comfort

An investigation into the effect of breast displacement on comfort measured the values of breast displacement of different directions of the subjects when they were running on the treadmill at a speed of 5 km/h or 10 km/h respectively under different conditions,i.e.,bare breast,wearing 3/4 cup size bra,and wearing sports bra by using VICON motion analyzer,and the subjects were requested to give their subjective evaluation of the bra comfort under individual conditions.It was found that running speed had positive correlation with breast displacement;breast displacement had negative correlation with comfort,amplitude of vertical breast displacement was the main factor affecting comfort;and the sports bra could limit the vertical breast displacement,and therefore improved the comfort of the breast.