ROSEHIP JUICE SUPPLEMENT AFFECTS DIFFERENT PERFORMANCE PARAMETERS IN TEAM ATHLETES

The aim of this study was to investigate the effects of rosehip juice supplement on different performance components of team athletes (n=66) aged 14-18 years who participated in sports activities 3 days a week. A 4-week pretest-posttest control group experimental model was used and Queen’s College Step Test, Running-based Anaerobic Sprint Test, Hexagonal Obstacle Test, 505 Agility Test, Shuttle Run Test and 35 Metre Sprint Test were administered as pre-tests. Research group consumed 250 ml of rosehip juice 5 days a week for 4 weeks. After 4 weeks, the same tests were administered to all participants. SPSS 25.0 analysis program was used to evaluate data. The difference between pre-test and post-test effect sizes between the two groups was 7% for Hexagonal Obstacle Test and 22% for 505 Agility Test. VO2max value calculated from the Queen’s College Step Test data, findings of Shuttle Run Test and 35 m Sprint Test administered for speed performance were not in favour of the research group. Running-based Anaerobic Sprint Test (RAST) was administered to evaluate anaerobic capacity and fatigue index. The data obtained showed that maximum anaerobic power increased by 20%, minimum anaerobic power increased by 22% and mean anaerobic power increased by 31%. The difference of the research group in fatigue index data was 34%. As a conclusion, the effects of rosehip juice supplement on agility performance (7%, 22%), maximum anaerobic power capacity (20%), minimum anaerobic power capacity (22%), mean anaerobic power capacity (31%) and fatigue index (34%) were positive and comprehensive.