Introduction: Shoe insoles are widely recommended to increase sport shoes comfort during running. However, relationship between ground reaction force frequency and perceived comfort is still unclear. The purpose of this study was to evaluate the relationship between ground reaction force frequency changes and perceived comfort during stance phase of running. Methods: 30 female students (mean...

a phase-locked loop (pll) based frequency synthesizer is an important circuit that is used in many applications, especially in communication systems such as ethernet receivers, disk drive read/write channels, digital mobile receivers, high-speed memory interfaces, system clock recovery and wireless communication system. other than requiring good signal purity such as low phase noise and low spu...

Background and purpose: Impaired function of trunk extensor endurance is known as a risk factor and clinical sign for low-back pain. The aim of this study was to determine the relationship between selected back muscles fatigue index and hyperlordosis. Materials and methods: This case-control study was carried out in 12 males diagnosed with hyperlordosis and 12 with normal lumbar curve. Surface...

Background and Objectives: Gait asymmetry is a useful index that can provide an important role in clinical treatment. Since the link between asymmetry index of gait ground reaction force frequency content and hearing loss is not well evaluated, the aim of this study was to compare the asymmetry index of gait ground reaction force frequency spectrum in deaf and hearing male children of Hamedan c...

Introduction: Investigation of job stress among people who have experienced accidents could help to recognize causes of events in workplaces. The objective of this study was to measure frequency and severities of work stressors among staff employed at the Hormozgan Ports & Sailing Organization, and determine its relationship with accidents. Methods: This cross-sectional study included 320 Hor...