The authors examined 20 subjects with infantile cerebral palsy, 10 of whom had patella alta, in order to evaluate any difference of extensor force of the quadriceps in the various degrees of flexion of the knee as compared with normal subjects. The objective was to reveal and measure any functional differences between the two groups.
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J Sports Sci
January 2025
Institute of Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, Germany.
The purpose of this work was to provide a fundamental, in-depth analysis of kinematics and kinetics of the bobsleigh push phase to establish a basis for performance analysis and enhancement. Fifteen elite male athletes performed maximal effort push starts, while ground reaction forces (GRF) and 3D marker trajectories were simultaneously recorded for ground contacts of different sub-sections of the push phase (start acceleration phase: first and second ground contact after the initial push-off from the start block, acceleration phase: 10 m and high-velocity phase: 30 m). To obtain a comprehensive view of the push phase, whole-body kinematics as well as joint kinetics were analysed and compared across the push phase.
View Article and Find Full Text PDFActa Bioeng Biomech
September 2024
Department of Biomedical Basis of Physical Culture, Faculty of Health Science and Physical Culture, Kazimierz Wielki University in Bydgoszcz, Poland.
Soccer is a sport being performed in a very dynamic manner. It requires soccer players to be able to develop high muscle force in a very short period of time. The aim of the study was to evaluate the strength and jumping abilities of young soccer players playing in different positions on the field.
View Article and Find Full Text PDFJ Biomech
January 2025
The Joint Department of Biomedical Engineering, the University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; North Carolina State University, Raleigh, NC, United States.
Throughout childhood growth and development, both the nervous and the musculoskeletal systems undergo rapid change. The goal of this study was to examine the impact of growth-related changes in skeletal size and muscle strength on the neural control of finger force generation. By modifying an existing OpenSim hand model in accordance with pediatric anthropometric data, we created 10 distinct models representing males and females at each year of development from 6 to 10 years old.
View Article and Find Full Text PDFSensors (Basel)
January 2025
Department of Electrical Engineering and Information Technology, University of Naples Federico II, 80125 Naples, Italy.
Parkinson's disease (PD) is characterized by a slow, short-stepping, shuffling gait pattern caused by a combination of motor control limitations due to a reduction in dopaminergic neurons. Gait disorders are indicators of global health, cognitive status, and risk of falls and increase with disease progression. Therefore, the use of quantitative information on the gait mechanisms of PD patients is a promising approach, particularly for monitoring gait disorders and potentially informing therapeutic interventions, though it is not yet a well-established tool for early diagnosis or direct assessment of disease progression.
View Article and Find Full Text PDFActa Ortop Mex
January 2025
División de Cirugía Especial. Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra (INR LGII). México.
Introduction: the tendency in the rehabilitation is to train specifically to the lumbopelvic girdle muscles, to give stability and segmentary control of the same.
Objective: to evaluate the isokinetic lumbopelvic in the patient's functional qualities with a dynamic instrumentation system (Accuflex).
Material And Methods: post-operated patients of spinal stenosis by means of dynamic liberation and fixation (Accuflex).
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