Training Tennis through Induced Variability and Specific Practice: Effects on Performance in the Forehand Approach Shot

(1) Background: Learning and training in variable conditions favors adapting to unstable or changing environments. The aim of this study was to test the effect of variable practice on the accuracy of the forehand net approach shot in tennis. (2) Methods: Thirty (N = 30) first-class national players (12.9 ± 1.1 years old) participated, divided into three groups: (i) induced variability training (n = 10) (varying court surfaces and balls), (ii) specific training (n = 10), and (iii) usual training (control group) (n = 10). All groups trained for a month: 12 sessions of 20 min (3 per week). The accuracy of the shots was analyzed through a 2D capture and digitization process of the ball bounce on the court. (3) Results: The variability group presented better accuracy values after the period without practice than the stable training group (p = 0.041; ES = 0.51). (4) Conclusions: The application of variability in the game conditions during tennis training seems to have a favorable effect on the retention of accuracy in the forehand down-the-line approach to the net.