Abstract: Objective: To analyze the effects of short term one-leg hurdle training on the performance of the tennis players' lateral start and short distance accelerated performance. Methods: the experimental method was used, 16 adult male tennis players were trained for 2 times a week for 4 weeks in a row. The experimental group (n=8) was trained with single leg hurdles, and the control group (n=8) was trained with two leg hurdles. Results: The simple effects of the left-right starting time, the 2.5m acceleration time and their total time in the middle and post-test were significant in the experimental group and the control group (partial η? =0.266~0.487, P < 0.05) ;the simple effects of the left- right starting time, 2.5m acceleration time and total time in the middle and pre-test were significant in the experimental group, and the simple effects of the left and right starting time, 2.5m acceleration time and total time in the middle and pos-test were significant in the control group (partial η?= 0.413~0.868, P< 0.01). The simple effect of left leg RSI in the experimental group and the control group tended to be significant (partial η?= 0.249, P = 0.05); the simple effect of left- right leg RSI and left- right dynamic balance in the experimental group was significant (partial η? = 0.57~0.68, P< 0.05). Conclusion: (1) 4 weeks single-leg hurdle training would have a positive effect on the lateral start and short-distance acceleration performance of tennis players. (2) After 4 weeks single-leg hurdle training and 4 weeks of detraining, the related physical fitness which affected the lateral start and short-distance acceleration performance of tennis players was better than that of double-leg hurdle training,and the related physical fitness of tennis players had the trend of being better than the double-leg hurdle training.

Key words: tennis player, short term, one-leg hurdle training, lateral start, short distance acceleration