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Full-Text Articles in Kinesiology
Motor Variability In Sports: A Nonlinear Analysis Of Race Walking, Ezio Preatoni, Manuela Ferrario, Giulia Dona, Joseph Hamill, Renato Rodano
Motor Variability In Sports: A Nonlinear Analysis Of Race Walking, Ezio Preatoni, Manuela Ferrario, Giulia Dona, Joseph Hamill, Renato Rodano
Joseph Hamill
This aim of this study was to analyse the nature of movement variability and to assess whether entropy measures may represent a valuable synthetic index of neuromuscular organization. The regularity of kinematic/kinetic time series during race walking, the changes in the structure of intra-individual variability over the test session, and the influence of athletic skill in (inter)national rank athletes were investigated. Motion analysis techniques were used. Sample entropy (SampEn) was adopted to examine fluctuations in lower limb angles and ground reaction forces. The regularity of both original and surrogate time series was assessed and compared, by estimating SampEn, to verify …
In Vivo Lumbo-Sacral Forces And Moments During Constant Speed Running At Different Stride Lengths, Joseph Seay, W. Scott Selbie, Joseph Hamill
In Vivo Lumbo-Sacral Forces And Moments During Constant Speed Running At Different Stride Lengths, Joseph Seay, W. Scott Selbie, Joseph Hamill
Joseph Hamill
The aim of this study was to introduce a Newton–Euler inverse dynamics model that included reaction force and moment estimation at the lumbo-sacral (L5-S1) and thoraco-lumbar (T12-L1) joints. Data were collected while participants ran over ground at 3.8 m s71 at three different stride lengths: preferred stride length, 20% greater than preferred, and 20% less than preferred. Inputs to the model were ground reaction forces, bilateral lower extremity and pelvis kinematics and inertial parameters, kinematics of the lumbar spine and thorax and inertial parameters of the lumbar segment. Repeated measures ANOVA were performed on the lower extremity sagittal kinematics and …