This study is motivated by the need to understand the elastodynamic response of belts in frictional contact with pulleys. To this end, a simplified model for belt~pulley contact is used to investigate the dynamic response of a belt subject to a train of harmonic tension waves. Through a nondimensionalization, a single dimensionless parameter f~ is identified which governs the dynamic response. ...

[1] Superposed‐epoch analysis is performed on magnetic field measurements from five GOES spacecraft in geosynchronous orbit during 63 high‐speed stream‐driven storms in 1995–2005. The field strength and the field stretching angle are examined as functions of time and local time, and these quantities are compared with the properties of the solar wind, the plasma sheet, and the outer electron rad...

BACKGROUND AND OBJECTIVE The purpose of this study was to find "Effect of lower extremity stretching exercises on balance in the geriatric population. METHOD 60 subjects (30 male and 30 female) participated in the study. The subjects underwent 10 weeks of lower limb stretching exercise program. Pre and post 10 weeks stretching exercise program, the subjects were assessed for balance, using si...

We use a modified filament stretching rheometer to quantify the influence of a known controlled pre-shear history on the transient extensional viscosity of a dilute polymer solution. Two different types of pre-deformation are explored; both influence the subsequent stretching significantly, albeit in opposite ways. Small-amplitude oscillatory straining parallel to the direction of stretching en...

BACKGROUND AND PURPOSE Stretching (that is, interventions that apply tension to soft tissues) induces increases in the extensibility of soft tissues, and is therefore widely administered to increase joint mobility and reverse contractures. However, it is not clear whether the effects of stretching are lasting. A systematic review was conducted to determine if stretching (either self-administere...

Mailing address: Marcelo Baptista Dohnert Rua Gonçalves Chaves, 3949 bloco A apto 201, Bairro Centro 96015-560 – Pelotas, RS, Brasil. [email protected] ABSTRACT Introduction: Stretching is a therapeutic technique and may be used as a form of warm-up to increase flexibility or decrease pain throughout the movement, with objective to improve performance and reduce the risk of injury. Objective: ...

The purpose of t his study was to investigate the acute effects of pre-exercise static and dynamic stretching on peak torque of the knee extensors in female athletes and non-athletes. Thirty subjects (15 athletes and 15 nonathletes) completed three tests on an isokinetic dynamometer. After performing a randomly assigned preexercise stretching protocol (no stret ching, static or dynamic) the sub...

QUESTION Does electrical stimulation in addition to passive stretching reduce spasticity and contracture more than passive stretching alone in children with cerebral palsy? DESIGN Randomised within-participant controlled trial with concealed allocation, assessor blinding, and intention-to-treat analysis. PARTICIPANTS Eleven (one dropout) children with cerebral palsy and bilateral knee flexo...