The purpose of this study was to investigate the relationship between squat of 1RM (one repetition maximum) muscle strength and squat jump ability. Methods: In this study, 13 basketball players were used as subjects, and stepwise multiple regression analysis was used to test whether the association. The subjects completed the test of 1RM squat and the test of squat jump on the force plate within three days. They must rest for 48 hours between the two tests. Jump height, RSI (reactive strength index), impulse rate of force development, and impulse peak force. Results: the significant correlation was found between squat maximal strength and squat jump peak force (r=0.64, p=0.017). Conclusion: This study found that basketball players can use squat jumps on the force plate to predict the maximum muscle strength of squats. The prediction formula is: squat maximum muscle strength = peak push force × 0.689 + 1.044.
