In this photograph there is few detail of the subject in motion compared to background the which is in focus. The shutter speed which is 0.6″
The photograph captures the subject frozen in the middle of an action with a smile, and the detail of the photograph was captured with the shutter speed of 1/640″
These are both good examples of freezing and blurring motion respectively.
In the first photo, the moving figure breaks the symmetry of the shot adding to the dynamism of the shot.