Floor vibrations induced by human walking were investigated in a reinforced concrete structure. Six experimental floor structures were built in laboratories with the same dimensions and boundary conditions. Subjective tests were performed to assess the vibration serviceability of the floor structures. First, the subjects were asked to walk across a floor and then to rate the intensity of the vi...

To improve the efficiency of forest fire fighting, ride comfort is very important for firemen to maintain good physical condition. Firstly, a whole vehicle model was established with the ADAMS/view(Automatic Dynamic Analysis of Mechanical Systems) software. Next, test and simulation were performed to verify the three-dimensional model. Finally, the comparison of real vehicle test and ride comfo...

abstract background: physical activities among adolescents affects health during pubescence and adolescence and decrease in physical activities among adolescents has become a global challenge. the aim of the present study was to define the relation between the level of physical activity among adolescent girls and their health beliefs as personal factor and level of observational learning as env...

BACKGROUND The intima-media thickness of carotid arteries measured with B-mode ultrasound is a measurable index of the presence of atherosclerosis. Physical inactivity is known to be a risk factor for rapid onset and progression of atherosclerosis. Objective of the study was to evaluate the influence of leisure time physical activity on carotid intima media thickness in middle aged Pakistani po...

This study aims to validate a model for evaluating learning management systems (LMS) used in e-learning fields. A survey of 163 e-learning experts, regarding 81 validation items developed through literature review, was used to ascertain the importance of the criteria. A concise list of explanatory constructs, including two principle factors, was extracted from the responses of 133 respondents b...

Background: Recent studies have shown that physical activity is an effective factor in improving sleep quality. Therefore, this study aimed to compare the sleep quality of athlete and non-athlete pregnant women. Methods: This cross-sectional descriptive analytical study was performed on 300 pregnant women in the last trimester of pregnancy, referred to prenatal care unit of Amiralmomenin Hos...

Sufficient and regular physical activity is considered a protective factor, reducing the onset of secondary disability conditions in adolescents with chronic diseases and functional limitations. The aim of this study was to explore whether participation in organized sport may be associated to higher levels of physical activity in adolescents with functional limitations, based on a national repr...

Physical activity enhances cognitive performance, yet individual variability in its effectiveness limits its widespread therapeutic application. Genetic differences might be one source of this variation. For example, carriers of the methionine-specifying (Met) allele of the brain-derived neurotrophic factor (BDNF) Val66Met polymorphism have reduced secretion of BDNF and poorer memory, yet physi...

background: multiple factors such as retirement, work disability, social rejection, physical illness and etc., have an impact on general health of the elders. one factor among others is the role of psychological variables. the study is intended to assess the effect of positive and negative perfectionism and type-d personality (distressed) on general health of the elders. methods: in this descri...