A Experimental Research Of Core Strength Training For Tennis Players

Context: Most of the information found in the literature only provides suggestions as to what exercises to use for strengthening and rehabilitation programs with very few if any studies evaluating the benefits of the exercises.Objective: The purpose of this study is to determine whether there will be a difference between the Open Kinetic Chain/Closed Kinetic Chain (OKC/CKC) group and Open Kinetic Chain/Closed Kinetic Chain/Core Stability (OKC/CKC/CS) group, and control group following a six week training program on serving accuracy, proprioception, and core endurance.Design: This study was a 2×3 factorial design with group (experimental groups and a control group), and time (pre and post). The dependent variables included Functional Serving Accuracy Index (FSAI), Closed Kinetic Chain Upper Extremity Stability Test, Back Extensor Test,45°Abdominal Fatigue Test, Right Side Bridging Test, and Left Side Bridging Test.Setting: At Wuhan Institute of Physical Education.Patients and Other Participants: Subjects consisted of 34 healthy baseball athletes (20.000±1.54 years,height 171.127±5.67 cm,and mass 75.4±7.9 kg) from same collegiate setting. The tennis athletes were randomly assigned into the three groups.Interventions: Pre and post-test measurements for serving accuracy using the Functional Serving Accuracy Index (FSAI), upper extremity proprioception using the Closed Kinetic Chain Upper Extremity Stability Test,and core endurance using the Back Extensor Test, 45°Abdominal Fatigue Test, Right Side Bridging Test, and Left Side Bridging Test were conducted. The six week protocol for the experimental groups was conducted following a specific program three times a week for an average of 60 minutes. The battery of Open Kinetic Chain and Closed Kinetic Chain exercises was advanced from week to week. The exercises in the core stability program were also advanced from week to week.Main Outcomes Measures:There will be a significant difference in pre-test to post-test results of the athlete between the three groups. There will be a significant differences from pre-test to post-test and also for the OKC/CKC/CS group for the Functional Throwing Performance Index,Closed Kinetic Chain Upper Extremity Stability Test, Back Extensor Test, Abdominal Fatigue Test, and Right and Left Side Bridging Test.Results: Significant differences were found for test for within subjects effects for four of the six tests, FSAI (F = 15.696,P = < 0.001, ES = 0.336,β= 0.970), Closed Kinetic Chain Upper Extremity Stability Test (F = 33.557, P = < 0.001, ES = 0.520,β= 1.000), Back Extensor Test (F = 11.095, P= 0.002, ES = 0.264,β= 0.897), and Abdominal Fatigue Test (F = 17.160, P = < 0.001,ES = 0.356,β= 0.980), and for test by group within subjects effects for the FSAI (F =8.761, P = 0.001, ES = 0.361,β= 0.955), and Closed Kinetic Chain Upper ExtremityStability Test (F = 13.369, P = < 0.001, ES = 0.463,β= 0.996). The significant differences were between pre and post-test for all tests except for right and left side bridging. There were no significant differences for group between subjects effects for all six tests.Conclusion: The Open Kinetic Chain/Closed Kinetic Chain/Core Stabilization exercises may be used to improve throwing, and proprioception among upper extremity dominant subjects. OKC/CKC/CS exercises have an effect on the functional performance of healthy subjects with no upper extremity injuries. Further research needs to be conducted on the aspect of functional performance with strength training program.