标题：The Effect of Pilates Stable Device with Instability Device Using the Circuit Training Method on Balance, Flexibility, and Abdominal Muscle Strength
摘要：The purpose of this study was to analyze the effect of a stable device with an instability device using circuit training method on balance, flexibility, abdominal muscle strength. This research used quasi-experimental design by giving exercises aided instability devices using a gym ball with a circuit training method in six training posts. Trainer used the gym ball instability devices programmed: 1) bridge on stability ball, 2) single leg on stability ball, 3) hip lift on stability ball, 4) single-leg hip lift on stability ball, 5) stability ball leg rotations stability ball leg rotations 6) prone scaption (Y) on stability ball. Total population is 90 male students, age ± 19 years, height ± 164.40 cm, and body weight ± 55.33kg. From the test of each group (paired sample), it was found that there was a significant difference between pretest and posttest on the variable group of stable devices with instability devices (p-value> 0.05), while the control group did not have any difference (p-value <0.05). Meanwhile, ANOVA test results obtained only the average value of the balance variable in the instability device group using gym ball with control (p-value 0.002 <0.05), the stable device using a mattress and control (p-value 0.000 <0.05), the flexibility group of the stable devices using a control mattress (p-value 0.001 <0.05), the abdominal muscle strength device instability using a gym ball with a control (p-value 0.007 <0.05 <0.05) which has a difference.
