THE EFFECTS OF PLYOMETRICS TRAINING ON SHOULDER INTERNAL AND EXTERNAL ROTATION STRENGTH IN TENNIS PLAYERS
Burçin ÖLÇÜCÜ1, Güven ERDİL2, A. Yavuz KARAHAN3, Mustafa ALTINKÖK4, Gökhan KANDEMİR2
1Gaziosmanpaşa Üniversitesi Beden Eğitimi ve Spor Yüksek Okulu, Tokat
2Marmara Üniversitesi Beden Eğitimi ve Spor Yüksek Okulu, A. Hisarı, Beykoz, İstanbul
3Karaman Devlet Hastanesi Fizik Tedavi ve Rehabilitasyon Bölümü, Karaman
4Çekmeköy Vatan İlköğretim Okulu, Taşdelen, Çekmeköy, İstanbul
Keywords: Tennis, plyometrics training, shoulder internal and external rotation, isokinetic measurement
Shoulder internal and external rotation strength status of tennis players following plyometrics training was investigated in this study. A total of 40 male tennis players aged between 20-25 years volunteered to participate in the study. While members of the experimental group underwent a plyometrics training program of two sets per day three times a week in addition to their standard tennis process training, the control group continued with only the standard tennis training for the eight-week period. Measurements of the dependent variables were made at the start of the study, and at the end of 4th and 8th weeks. A mixed between- and within-subjects ANOVA was used to evaluate the effects of dependent variables on the training program. Significant changes (p<0.05) for the mean peak torque scores were observed at the angular speed of 60°/s, in favor of the experimental group. In short, it is concluded that applying plyometrics exercises in addition to standard tennis training session had a positive impact on internal and external rotation forces of the shoulder.