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. 3, n. 2, p. 84-94, 28 Dec. 2017.