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Full-Text Articles in Social and Behavioral Sciences

Lower Extremity Kinematics And Kinetics When Landing From Unloaded And Loaded Jumps, Ina Janssen, Jeremy M. Sheppard, Andrew A. Dingley, Dale W. Chapman, Wayne Spratford Jan 2012

Lower Extremity Kinematics And Kinetics When Landing From Unloaded And Loaded Jumps, Ina Janssen, Jeremy M. Sheppard, Andrew A. Dingley, Dale W. Chapman, Wayne Spratford

Faculty of Science, Medicine and Health - Papers: part A

Countermovement jumps loaded with a weighted vest are often used for the training of lower body power to improve jump performance. However, it is currently unknown how this added load affects the lower extremity kinematics and kinetics, in particular whether this results in an increased injury risk. Therefore, the purpose of this investigation was to determine how lower extremity kinematics and kinetics during landing are affected by loaded jumps as demonstrated in a volleyball block jump landing. Ten elite male volleyball players performed block jump landings in an unloaded and loaded (9.89 kg) condition. Kinematic and kinetic landing data from …


Nonlinear Analysis Of Biaxially Loaded High Strength Rectangular Concrete-Filled Steel Tubular Slender Beam-Columns, Part I: Theory, Qing Quan Liang, Vipulkumar Ishvarbhai Patel, Muhammad N. S Hadi Jan 2012

Nonlinear Analysis Of Biaxially Loaded High Strength Rectangular Concrete-Filled Steel Tubular Slender Beam-Columns, Part I: Theory, Qing Quan Liang, Vipulkumar Ishvarbhai Patel, Muhammad N. S Hadi

Faculty of Engineering and Information Sciences - Papers: Part A

This paper presents a new numerical model for the nonlinear inelastic analysis of biaxially loaded high strength thin-walled rectangular concrete-filled steel tubular (CFST) slender beam-columns. The numerical model considers the effects of progressive local buckling, initial geometric imperfections, high strength materials and second order. The accurate fiber element method is used to model the inelastic behavior of composite cross-sections. Theoretical models are developed that simulate the load-deflection responses and strength envelopes of thin-walled rectangular CFST slender beamcolumns under biaxial loads. New computational algorithms based on the M􀂗􁈷 ller's method are developed to adjust the depth and orientation of the neutral …