The Injury occured when I changed my contact point from looking in front of the ball to looking behind the back of the racquet (ground) when i hit my strokes which tilts the head to the side and stops it moving around.
Yes the technique of Federer's worked and was more stable and all that when hitting, but because I did not have the strength training, as this change makes you hit from the stomach muscles, so I got injured because I've not used those muscles before to hit the ball that way....
I read about this on Revolutionary tennis website about that looking down technique and now I realize that these things are not safe to apply unless you've had the proper guidance from a coach and strengthened your body to use these techniques....No I did not hit my head with the racket....
Yes unbelievable but I suffered a minor tear in the abdomen area just from
keeping my head down during my stroke.... It has now put me off the
court for a week.
It's prob safe to slice like that, but unless those muscles are strengthed, it is not
safe to topspin the ball like that....