| Summary: | 碩士 === 中國文化大學 === 體育學系運動教練碩博士班 === 101 === Running-between-the-wickets (RBW) is important skill in cricket batting for the game today. Purposes: The study is to examine the usefulness as predictors of run-a-single (R1) and run-a-two (R2). Also, it is used to investigate the interrelationships among isokinetic knee flexion-extension, countermovement jump (CMJ), straight sprinting speed (20 m. sprint), change of direction speed (CODS), and both R1 and R2. Therefore, the study wants to compare different performances among dominant and alternate leg to start, sliding the bat into the crease, and the change of direction speed for 15 male Thailand’s National Cricket Players. Methods: The isokinetic was assessed on Cybex isokinetic machine, CMJ was tested on Fitness Technology machine, the sprint and RBW tests were assessed by Smartspeed® machine. The forward stepwise multiple regression, Pearson product moment correlations, and the independent t-test were used to analyze. Results: With regard to multiple regression analysis, St20 (r = .96) was the best predictor of R1 and St20 (r = .87) as followed by CODS (r = .73) were the best predictor for R2. The Person correlation analysis showed that St20 correlation with CMJ (r = -.88) and CODS (r = -.56). It was interesting that the speed of R1 was significantly related with R2 (r = .91). According to the independent t-tests analysis, there were no significant differences between dominant and alternate legs. Conclusion: Start, sliding the bat, and the change of direction using dominant or alternate side were not showed significant difference. Both R1 and R2 showed significant relationship with the St20, therefore the St20 was also significant correlated with CMJ. The speed and vertical jump performance should be developed together. Hence, speed and power (vertical jump) training are important in order to improve running between the wickets performances.
Key words: countermovement jump, isokinetics, speed, agility
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