EFFECT OF CAFFEINATED COFFEE INGESTION ON THE CARDIO RESPIRATORY ENDURANCE PERFORMANCE AND REACTION TIME OF ATHLETES: THE CASE OF ATHLETES IN NEKEMTE TOWN, OROMIA REGION, WESTERN ETHIOPIA

Abstract

The purpose of this study was to examine the effect of Ethiopian Arabica coffee ingestion an hour before exercise on cardiovascular endurance performance and reaction time of athletes. Well trained endurance athletes those who are habitual of coffee ingestion, free from any health problem, found in Nekemte town and volunteer for this study were included in the study. Subjects were instructed to be free from taking any nutritional supplements or other ergogenic aids for a week preceding the test. This study used pretest-posttest research design and Thirty (30) physically active subjects (20 male, 10 female; age between 18 – 23), was selected by purposive sampling technique from Nekemte town athletics club out of 30 only 25 subject were able to complete the study. Each subject was tested at the same time of day, and there were 1 week separating trials. During the first trial, participants were not consumed coffee and the test for reaction time (Metric ruler drop test) was conducted as soon as they arrived to gymnasium, the test result was recorded and Vo2 max test were followed. On the second test day coffee was prepared by weighing out 51.6 g of coffee ground with 532 ml of water using a boiling (Turkish or Greek) coffee brewer method and post test taken an hour after the subjects consumed the prepared coffee. The data were analyzed by SPSS version 20. The comparison of mean was carried out by paired T-test. The level of significance was 0.05. The result of present study showed significance (P 0.05) improvement in Vo2 max (MD -1.67) for male and (MD -1.21) for female, metric ruler drop test (MD -.0054) for male and (MD - .011) for female. So this study concluded that the ingestion of Ethiopian Arabica coffee an hour before exercise improved endurance performance.