A third study in 2011 by Scurr and others looked at supported and unsupported breast displacement with the aim to quantify multi-directional breast displacement across varying activity levels and in varying breast support conditions. The study included 21 women who wore D cup sized bras. Their activity levels varied from treadmill walking to maximal treadmill running. Maximum displacement was found in the right breast during the unsupported condition at , this showed an overall displacement of . Results also showed that breast displacement was reduced as breast support increased by up to 59% in an encapsulation bra versus no bra. Results also showed that there was a significant increase in breast displacement as treadmill speed increased up to . The results of this study concluded that at higher speeds of activity, vertical breast displacement was highest, however side-to-side and forwards-backwards movement still accounted for half of the total breast displacement. Therefore, this means that sports bra design should primarily concentrate on vertical displacement factors but not totally ignore other planes of motion. As no evidence was found that breast support requirements change as running speed increased, the study suggested that designers should focus on sports-specific sports bras that will account for the individual variances of breast displacement in different sports.