Although it is generally assumed that mental stress induces muscular tension, the experimental data have, so far, been inconclusive. Likely explanations for these inconsistent findings are (a) too small subject samples in some experiments, (b) the use of only one type of stress stimulation, and (c) the lack of objective (physiological) measurements documenting the stress-inducing properties of ...

Background: Firefighting and rescue require high physical and psychological needs under unpredictable and dangerous conditions. Thus, this study aimed to investigate mental workload and affecting factors in firefighters. Materials and Methods: This is a descriptive study which was conducted on 250 firefighters of Tehran, Iran. National Aeronautics and Space Administration Task Load Index (NASA...

introduction: psychological and social health is the main problems of workers population, which can increase productivity at work and physical and mental health and provide or decline in these aspects. materials and methods: this study was descriptive and crosses - sectional and has been performed on 388 iranian central iron ore company workers. the tool of study was standard ghq-28 question ar...

BACKGROUND There is growing interest in the treatment and return-to-work of workers with labor related mental illnesses. AIM To perform a systematic review of practices and interventions that improve return to work. MATERIAL AND METHODS Systematic literature review. Thirty articles were selected for in- depth analysis. RESULTS Self efficacy perception, work motivation, a lower age and a b...

mental workload is one of the factors that influence individuals’ performance in the work environment as well as their efficiency and productivity. the present study aimed at examining the association between mental workload and general health among welders of tehran heavy structuress metal company.this cross-sectional study was conducted in 2016. the sample included 100 welders who were workin...

PURPOSE Unfavourable exposure to psychosocial work factors threatens older employees' mental health, and their sustained employment. This study assesses whether an improved compared to stable unfavourable and stable favourable exposure to psychosocial work factors is associated with a change in mental health in older employees at 3-year follow-up. METHODS The current study used data from the ...

The allostatic load model expands the stress-disease literature by proposing a temporal cascade of multi-systemic physiological dysregulations that contribute to disease trajectories. By incorporating an allostatic load index representing neuroendocrine, immune, metabolic, and cardiovascular system functioning, numerous studies have demonstrated greater prediction of morbidity and mortality ove...