The effect of rope jumping training on the dynamic balance ability and hitting stability among adolescent tennis players

To discuss the effects of 12 weeks of jump rope training on dynamic balance and stroke stability in junior tennis players. Sixteen junior tennis players at CTN7 level were used as subjects and randomly divided equally into ExG and ConG for 12 weeks of training, 3 times a week. The ExG performed Jump Rope training and Special Preparation Activity (JR + SPA), the ConG performed only Special Preparation Activity (SPA) to ensure that the training intensity was basically the same. The Biodex Balance System (BBS) was applied to examine the participants' dynamic balance ability, including the Limits of Stability (LOS) and the Single Leg Stability Test (SLST), the International Tennis Number (ITN) tests ball striking stability. Experimental data were statistically analyzed using independent samples t test, paired samples t test, and repeated measures ANOVA test. We observed significant (P < 0.05) differences in limits of stability (LOS) before and after the test in subjects in the ExG and significant (P < 0.05) differences in ODC, BDC, RDC, FLDC, BLDC, and BRDC metrics in the ExG, and a 2 (group: ExG, ConG) × 2 (time: 0w, 12w) repeated measures ANOVA was performed and found significant (P < 0.05) differences in LDC, RDC, FLDC, BLDC, BRDC, and LOST (S) indexes interacted significantly (P < 0.01) in single-leg stability test (SLST) pre- and post-measures were found in subjects in ExG and in MLSI (L) in ExG (P < 0.05), and 2 (group: ExG, ConG) × 2 (time: 0w, 12w) repeated measures ANOVAs were performed and found that OSI (L), MLSI (L), OSI (R), MLSI (R) interaction on indicators was significant (P < 0.05). The difference in hitting stability between subjects in ExG was significant (P < 0.01) at the pre and post test, while the difference in ConG was significant (P < 0.01) at the pre and post test only on the hitting stability test (depth). 2 (Group: ExG, ConG) × 2 (Time: 0w, 12w) repeated measures ANOVA was performed and found a significant interaction between the two (P < 0.01). We suggest to incorporate Forward double-legged alternating jump rope, Reverse double-legged alternating jump rope, Double-legged alternating cross jump rope, Squatting alternating single-legged jump rope into the regular tennis training course with special techniques, which will help the junior tennis players' dynamic balance ability and hitting stability, and can effectively improve the competitive level of junior tennis players.