PENGARUH LATIHAN FISIK JANGKA PENDEK MENGGUNAKAN METODE HARVARD STEP TERHADAP WAKTU PERDARAHAN

Abstract

Background : The effect of exercise relates to hemostasic mechanism. Platelet activation can change during exercise. Adenosine diphosphat (ADP), catecholamine, thromboxane A2 which stimulation change of platelet activation will be increase after exercise. Objective : To review the effects of short term exercise using Harvard Step method on bleeding time. Subject and Methods : Quasi experimental was done with pretest and posttest design included 20 experimental subject using purposive sampling . Criteria of experimental subject is male, 18-23 years old, with minimal height 165 cm. The exercise that employed was the 3 minute Harvard Step. Blood samples were obtained at rest and immediately after Harvard Step. Statistic test were performed by Shapiro-Wilk Test, Wilcoxon Test. Results : The result shown that mean of bleeding time after exercise (BT before) is 83.15 (SD = 14.113) seconds, and mean of bleeding time after exercise (BT after) is 94.35 ( SD = 20.011) seconds. The result of Wilcoxon Test showed that there were significant differences, p=0.005 (p<0.05). Conclusion : The result show that bleeding time increase after short term exercise. Keywords : Exercise, Bleeding Time, Harvard Step