ok i have resolved the problem, i find how reduce animation and make her more slow , for this all is ok now .
But now i have a other problem is with SL when i upload the files , i understand not , i upload the file and i play animation and avatar is with the hand on each side normalement the hand in animation i create when i open QAvimator she are behind the back .
how this when i upload animation on SL the hand are on the side ??