ABSTRACT Introduction Strong core stability and strength enable the trunk to transfer the maximum amount of torque to the terminal segments, which is conducive to improving athletic performance. Because sling training is a new core exercise method, its effect on trunk endurance relative to basketball performance has rarely been studied. Objective To investigate whether a core exercise program in a specific sports group can improve core and sports-specific performance. Methods A total of 40 college students majoring in basketball were randomly assigned to training and control groups. A standardized set of core endurance and basketball-specific performance tests were used to determine and assess the effects of sling training on trunk strength, endurance, and control. Results Flexor, extensor, and right and left lateral trunk flexor muscles endurance were significantly greater in the training group than in the control group, and the time to complete the layup obstacle course was shorter than in the control group at the end of the training program, p<0.01. No differences between the two groups were found in the penalty shot, the fixed position shot, or the vertical jump and reach at the end of the training program. Conclusions Sling exercises can improve the core endurance and strength of basketball players and increase the speed of lay-ups over obstructions. Level of evidence I; Randomized clinical trial.