Contribution of Leg Power, Arm Power, Stomach Muscle Power, and Back Muscle Power on Jumping Services

Background: Service jumping is one of the volleyball techniques which is very important to be trained in the game in order to complicate the opponent reception. Proposal: This research aims to determine the contribution of leg power, arm power, abdominal muscle strength, and back muscle strength to the volleyball athlete's jumping service ability. Method: This research is a correlational descriptive study. The subjects of this study were volleyball athletes from Bantul Regency club. The sampling technique used purposive sampling with a total of 42 respondents. Data collection instruments using measurement tests. Data analysis used multiple regressions. The results showed that there was a contribution of leg power to the volleyball athlete's jumping service ability (p value = 0.011) with a contribution of 28.7%. There was a contribution of arm power to jumping service ability in volleyball games (p value = 0.015) with a contribution of 20.4%. There was a contribution of abdominal muscle strength to the volleyball athlete's jumping service ability (p value = 0.018) with a contribution of 23.2%. There was a contribution of back muscle strength to the volleyball athlete's jumping service ability during games (p value = 0.031) with a contribution of 16.7%. There was contribution of leg power, arm power, abdominal strength and back muscle strength to the volleyball athlete's jumping service ability (p value = 0,000). The amount of contribution of leg power, arm power, abdominal strength and back muscle strength to jumping service ability is 89%. Conclusion: a volleyball training must be complete because its techniques include the whole body.