The effect of hip joint position on knee joint isokinetic dynamometry indices in football and track and field athletes

• Published in: Majallah-i Danishkadah-'i Pizishki 2022-11, Vol.80 (8), p.660-669
• Main Authors: Mandana Rezaei, Nader Sadri-Aghdam, Mahmood Reza Azghani, Fariba Ghaderi, Hakimeh Adigozali
• Format: Article
• Language: per
• Subjects: football; hip joint; knee joint; muscle strength dynamometer; track and field
• ISSN: 1683-1764; 1735-7322

Background: Isokinetic dynamometry is a golden standard test to estimate lower extremity sport related injuries in the athlete assessment. Dynamometry is also commonly used to design preventive protocols. The aim of this study was to explore the effects of hip joint positioning in seated and lying positions on knee joint dynamometry indices, including extensor and flexor peak torques in football and track and field athletes. Methods: Forty four male athletes (including 22 football players and 22 track and field athletes) have participated in this descriptive-analytic study. The sampling method was simple nonrandom sampling. This study was conducted in the Biomechanics laboratory of the Rehabilitation Sciences, Faculty of Tabriz University of Medical Sciences since October 2019 to October 2020. Knee joint dynamometry indices were consisted of concentric and eccentric flexor and extensor peak torques at 60 degrees per second velocity. Optimum length, angle of crossover, and the muscle balance ratios (concentric extensor peak torque/concentric flexor peak torque and eccentric extensor peak torque/concentric flexor peak torque) were also evaluated. All assessments were performed in both seated and lying positions. The indices were compared between football players and track and field athletes. Results: The interaction effect of group and hip joint was not significant (P