The aim of this study is to investigate the effect of upper extremity neuromuscular exercise training on throwing performance, upper extremity strength, and endurance in recreational tennis players. In this context, 24 recreational tennis players will be included in the study. Participants will be divided into two equal groups using a simple randomization method. The study group (n=12) will receive progressive upper extremity neuromuscular exercise training twice a week for six weeks before each tennis training session, while the control group will perform only routine warm-up exercises. Both groups will be evaluated twice, once at the beginning of the study and again at the end of the six-week intervention. Throwing performance will be assessed using the Functional Throwing Performance Index (FTPI) and the International Tennis Number Test (ITN). Upper extremity endurance will be evaluated through the Closed Kinetic Chain Upper Extremity Stability Test (CKCUEST) and Scapula Muscle Endurance Test (SME), while upper extremity strength will be measured using the Health Ball Throw Test (HBT) and the Y Balance Upper Extremity Test (YBUET). Statistical analysis will be conducted using SPSS 24.0 software.

Inclusion Criteria:

1. Being between the ages of 18-50
2. Being a recreational tennis player
3. Playing tennis regularly for at least 1 year
4. Playing tennis regularly at least twice a week for the last 6 months

Exclusion Criteria:

1. Playing another sport along with tennis
2. Being a professional tennis player
3. Having a history of any injury and/or surgery affecting the upper extremity