PERBANDINGAN EFEKTIVITAS PEMBERIAN MINUMAN ISOTONIK DAN JUS PISANG TERHADAP DAYA TAHAN OTOT SELAMA AKTIVITAS LARI 30 MENIT

Background: Fluid administration is very important to deliver nutrients and oxygen to skeletal muscles to produce energy during exercise. Consuming isotonic drink is one of the ways to restore lost body fluids so that the body can avoid dehydration and extend the muscle endurance. In addition, banana is a source of carbohydrates and electrolytes that are effectively used to maintain the muscle endurance. However, no studies have compared the effectiveness of isotonic drink and banana juice towards muscles endurance during 30 minutes of running. Objective: To compare the effectiveness of isotonic drink and banana juice towards muscles endurance during 30 minutes of running. Method: This was a comparative quasi experimental research with pre-test and post-test design. The subjects were students of Faculty of Medicine, University of Diponegoro aged 18-24 years old (n = 16). The subjects did three treatments: without drink, isotonic drink, and banana juice. Muscle endurance was determined by measuring the distance of running for 30 minutes. Isotonic drink and banana juice were given at minute 0, 10, and 20 with 150 ml each. Results: Distance average before the treatment was 4194.63 ± 401.592 m, while after the treatment with isotonic drink and banana juice were 4590.56 ± 459.499 m and 4546.421 ± 689.742 m consecutively. There was an improvement in the average distance after the treatment with isotonic drink and banana juice. Statistical analysis showed a significant difference in the tratment of isotonic drink and banana juice with p = 0.048. Conclusion: Banana juice is more effective than isotonic drink on muscle endurance during 30 minutes of running. Keywords: Isotonic drink, banana juice, muscle endurance, 30 minutes of runnin