BACKGROUND Variability exists in children's activity patterns due to the association with environmental, social, demographic, and inter-individual factors. This study described accelerometer assessed physical activity patterns of high and low active children during segmented school week days whilst controlling for potential correlates. METHODS Two hundred and twenty-three children (mean age: ...

background & aim: acquired immune deficiency syndrome (aids) is an infectious disease caused by human immunodeficiency virus (hiv). the awareness of hiv preventive measures and its transmission routes have an important role in controlling the hiv infection in the society. regarding this, the present study aimed to investigate the awareness and attitudes of the high school students regarding hiv...

a cross-sectional survey was conducted .using a modified questionnaire for the study of cigarette smoking prevalence in khalkhal city, iran, during may-â june 1999. a simple random sample with size 260 was selected for this study. all of the students in the sample completed a questionnaire. the results showed among 260 students, 104 of them (40%) experienced at least once cigarette smoking and ...

this study have done to assess knowledge 200 girls and boys from 20 schools in 18th districts in south of tehran about individual hygiene. for gathering data use a questionnaire by 30 questions about knowledge of health in different part of body. the results of study show most of subjects have relatively good knowledge about individual hygiene. but their knowledge in some areas is more than oth...

background: in people over 50, one out of three women and 12 men experience osteoporosis. youth lifestyle plays an essential role in increasing bone mass and preventing osteoporosis in old ages. thus, lifestyle changes during adolescence could cause the prevention of osteoporosis in older age. this study therefore conducted to investigate the lifestyle of female high school students in relation...

social anxiety disorder is a debilitating and chronic illness characterized by persistent fear of one or more social or performance situations, with a relatively high lifetime prevalence of 7% to 13% in the general population and various factors are involved in its creation. one of the factors that affect this disorder is personality trait. the present study compared the personality trait in ad...

Poor children in the United States start school at a disadvantage in terms of their early skills, behaviors, and health. Fewer than half (48 percent) of poor children are ready for school at age five, compared to 75 percent of children from families with moderate and high income, a 27 percentage point gap. This paper examines the reasons why poor children are less ready for school and evaluates...