Disease progression in cystic fibrosis (CF) leads to muscle wasting and loss of muscle function. The aim of this prospective pilot study was to evaluate the effects of whole body vibration (WBV) on muscle function in adult patients with CF. Ten patients (three males; seven females) of the CF Center Cologne, Germany, have completed the 3-month study (age: 24-47 years; forced expiratory volume in...

In this paper, vibrations and bifurcation of a damped system consists of a mass grounded by linear and nonlinear springs and a nonlinear damper is studied. Nonlinear equation of motion is derived using Newton’s equations. Approximate analytical solutions are obtained using multiple time scales (MTS) method. For free vibration, the approximate analytical results are compared with the numerical i...

the present study is the first to analyze the dynamic response of a poroelastic beam subjected to a moving force. moreover, the influences of attached mass-spring systems and non-ideal supports (with local movements in the supporting points or base due to the presence of factors such as gaps, unbalanced masses, and friction or seismic excitations) on the responses were investigated. non-ideal s...