AKBARI, M.; DLIS, F.; WIDIASTUTI, W. THE EFFECT AT MUSCLE POWER ARM, HAND-EYE COORDINATION, FLEXIBILITY AND SELF CONFIDENCE UPON BADMINTON SMASH SKILL. JIPES - JOURNAL OF INDONESIAN PHYSICAL EDUCATION AND SPORT, v. 4, n. 1, p. 57-64, 30 Jul. 2018.