Hubungan Kelentukan Pergelangan Tangan Dengan Akurasi Forehand Chop Servis Da…

The problem this research when an athlete do some exercise and competition so on that athlete fail to do service with quick and strong. Beside it spin of ball feel like still not enought for make enemy difficult and also that service is easy for turn back. The purpose of this research is for knowing a correlation of wrist flexibility to forehand chop service result. The research have correl…