PERBEDAAN ANTARA NILAI ARUS PUNCAK EKSPIRASI SEBELUM DAN SESUDAH OLAHRAGA RENANG SELAMA DUA BELAS MINGGU

Abstract

Background: Swimming mechanism involves almost of the body main muscles, include the respiratory muscles. Swimming regularly will increase the respiratory muscles endurance and strength. Further, the increasing of them will affect to the increasing of lung capacity. This study was aimed to prove the difference in Peak Flow Rate (PFR) of the group receiving 12 weeks swimming exercise. Methods: The study design is a Quasi Experimental Two Groups Parallel Pretest-Posttest. Samples were taken from the students fulfilling inclusion and exclusion criteria. A total 40 students were selected became samples, then they were distributed by simple randomization into two groups. Twenty students of Semarang University got swimming exercise twice a week for 12 weeks from March until May as a experimental group and twenty students of Diponegoro University who did not get swimming exercise as a control group. The first and second PFR measurements in the 12-weeks measurement period were done to all of groups. The data was described in the form of tables and figures, analized by Mann Whitney test, unpaired t-test, and paired t-test with a computer program. Result: The data showed mean of PFR of the experimental group before training was 434,2 ± 80,81 ml/min and after it was 480,5 ± 65,95 ml/min, while PFR of the control group in the first measurement was 448,0 ± 47,75 ml/min and the second measurement was 450,0 ± 49,12 ml/min. The increasing of the PFR was showed in the both of experimental and control groups in the 12-weeks measurement period. The  Mean of PFR in experimental group was 41,2 ± 18,84 ml/min, while in control one was 3,0 ± 4,97 ml/min. The statistical analysis showed that  PFR in experimental group was significantly higher than in control group (p<0,001). Conclusion: The increasing of PFR in the group who get swimming exercise is significantly higher than in the group without swimming exercise.