Morphology of the Patellar Tendon and the Contractility Response of the Quadriceps

The purpose of the study was to describe the differences between the dominant and non-dominant leg regarding contractility response and quadriceps strength and the morphology and stiffness of the patellar tendon (PT) in a group of physically active men and women. Fifty physically active subjects (36 men and 14 women) were evaluated for morphology and stiffness of the PT, contractility response of the rectus femoris of the quadriceps, isometric strength of the quadriceps and hamstrings, and isokinetic strength (concentric and eccentric) at 60°/s of the knee extensors. The measurements were made on the subject's dominant and non-dominant leg. The men showed a greater thickness of the PT in both legs compared to the women. Regarding the contractility response, the women recorded a 10.1 ± 16.2% ( p = 0.038) greater contraction time (ct) in the dominant versus the non-dominant leg and the men recorded 11.9% ( p = 0.040) higher values in the dominant leg compared to the women. In all the absolute strength measurements the men recorded higher values ( p p < 0.05) greater than the non-dominant leg. The reference values provided in this study of the knee extensors and PT may be useful for detecting possible muscular or tendinous anomalies

Cardiology · Concentric · Contractility · Contraction (grammar · Eccentric · Isometric exercise · Physical medicine and rehabilitation · Physical therapy · Lower Extremity Biomechanics and Pathologies · Mathematics · Medicine · Sports injuries and prevention · Tendon Structure and Treatment · Anatomy · Internal Medicine

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  Open Access•Pablo Abián, Fernando Martínez et al.•International Journal of…•2020

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