Muscle and tendon adaptation in adolescent athletes: A longitudinal study.

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Abstract

[Indexed for MEDLINE] 15. Scand J Med Sci Sports. 2023 Nov;33(11):2208-2218. doi: 10.1111/sms.14458. Epub 2023 Jul 31. The effect of fatigue on spike jump biomechanics in view of patellar tendon loading in volleyball. Vermeulen S(1)(2), De Bleecker C(1)(2), Spanhove V(1), Segers V(3), Willems T(1), Roosen P(1), Vanrenterghem J(2), De Ridder R(1). Author information: (1)Department of Rehabilitation Sciences, Ghent University, Ghent, Belgium. (2)Department of Rehabilitation Sciences, KU Leuven, Leuven, Belgium. (3)Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium. BACKGROUND AND OBJECTIVE: Patellar tendinopathy (PT) is a highly prevalent overuse injury in volleyball and is often linked with overloading of the patellar tendon. Little is known, however, about whether and how patellar tendon loading is affected by fatigue during the most challenging jump activity in volleyball. Therefore, this study investigates the effect of a high-intensity, intermittent fatigue protocol on movement alterations in terms of patellar tendon loading during a volleyball spike jump. METHODS: Forty-three male volleyball players participated in this study. Three-dimensional full-body kinematics and kinetics were collected when performing a spike jump before and after the fatigue protocol. Sagittal plane joint angles, joint work and patellar tendon loading were calculated and analyzed with curve analyses using paired sample t-tests to investigate fatigue effects (p