TURKISH JOURNAL OF PHYSIOTHERAPY REHABILITATION-TURK FIZYOTERAPI VE REHABILITASYON DERGISI, cilt.32, sa.1, ss.97-102, 2021 (ESCI)
Purpose: In adolescent period, repetitive movements and overloading increase the risk of injury of athlete in the future. The fact that tennis is a unilateral sport affects hip muscle strength and hip biomechanics. The aim of this study was to examine the hip strength profiles, femoral anteversion angles (FAA), and to compare bilaterally in adolescent tennis players. Methods: The 47 tennis athletes (age=11.35 +/- 1.69 years; body mass index=18.42 +/- 2.64 kg/m(2)) were included in the study. The isometric strength of external rotation in hip abduction (HipSIT), abduction, adduction, flexion, extension, internal and external rotation were measured by hand dynamometer and the strength ratios were calculated. The FAA was measured by Craig's Test. The evaluations were performed bilaterally. Results: The HipSIT was higher on dominant side when compared to the nondominant side (p=0.034). Hip external rotation and internal rotation strength ratio were higher on the nondominant side (p=0.038). The FAA was 11.94 +/- 1.43 degrees on the dominant side and 11.50 +/- 1.43 degrees on the nondominant side (p=0.001) and found higher in dominant side. The FAA values were within normal limits (<15 degrees). Conclusion: According to the study results; hip muscle strength, strength ratios and FAA differ bilaterally in tennis athletes. The determination of adaptive differences in adolescent tennis players is very important for future potential injuries.