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...

aims: most of the world population who is at work and production age does not have appropriate and regular physical activity for various reasons. accordingly, the researchers tried to evaluate the effect of physical activity predictors of employees through the path analysis based on the pender's health promotion model (hpm). methods and materials: we conducted this study on 359 employees of the...

Background: Regular physical activity is ranked as a leading health indicator. Despite the extensive benefits of physical activity, elder people are much less active than desired. Using Theory of Planned Behavior (TPB) and the self-efficacy construct, this study examined the prediction of physical activity intention and behavior in a sample of elderly male resident of a nursing home. Me...

Purpose: Overweight or obese children and adolescents face a lack of confidence in their physical abilities, and show poorer motor and fitness performances, compared to healthy weight peers. Therefore, the present study aimed to investigate the relationship between physical self-efficacy and VO2 max in healthy weight versus overweight female adolescents. Methods: This was a cross-sectional cor...

Building an evolvable physical self-replicating machine is a grand challenge. The main problem is that the device must be capable of hereditary variation, that is, replicating in many configurations-configurations into which it enters unpredictably by mutation. Template replication is the solution found by nature. A scalable device must also be capable of miniaturization, and so have few or no ...