View clinical trials related to Physical Activity.
Filter by:The study addresses a critical public health problem, childhood obesity, by testing a physical activity intervention in the types of preschools that millions of children attend. Information gained in this study may lead to adoption of preschool policies and instructional practices that increase physical activity and reduce the risk of obesity in preschool children.
The primary research question is: 1) Does the planning condition improve adherence to regular physical activity compared to the control condition at six months? Hypothesis: Adherence will be higher for the planning condition in comparison to the more standard physical activity education condition. The effect may wane over time from the initial measurement period but all outcomes will remain significantly higher at six months. Secondary Research Questions 1. Does the planning condition improve motivational, health-related quality of life, and health-related fitness outcomes compared to the control condition at six months? Hypothesis: The planning condition will not affect intentions or underlying motives (theory of planned behaviour constructs) for physical activity because its effect on behavior is to tie initial intentions better to behavioural action (i.e., behavioural regulation) and not to enhance motivation. Health-related fitness and quality of life, however, will be higher for the planning condition in comparison to the standard physical activity education intervention condition. The effect may wane over time from the initial measurement period but all outcomes will remain significantly higher at six months in the planning condition compared to the standard physical activity education group. 2. Can group differences among these motivational, behavioural, and health-related fitness outcomes be explained through a mediation model? Hypothesis: The covariance of the assigned conditions (planning, education) on use/adherence will be explained by planning and use of behavioural regulation strategies (i.e., manipulation check). In turn, the covariance between planning and behavioural regulation strategies and health-related outcomes will be explained by physical activity adherence among conditions. 3. Can motivational variables predict adherence? Do these differ by condition? Hypothesis: The approach will test Ajzen's theory of planned behavior, extended by the concept of active planning. Affective attitude and perceived behavioural control will predict intention, intention will predict planning and planning will predict adherence across conditions. 4. Is there an intergenerational, seasonal, or gender difference across primary outcomes by assigned condition? Hypothesis: Children will show greater adherence to the planning condition than their parents. No differences in gender or season are hypothesized but these are exploratory research questions because there is limited research at present to make any definitive statement.
Rationale: Abnormally low and high levels of insulin-like growth factor-I (IGF-I) are both associated with increased metabolic risk. Since (U-shaped) associations of IGF-I, within the normal range, have also been found with cardiovascular risk factors and disease in the general population, it would be interesting to investigate if this association can also be found in growth hormone deficient (GHD) adults treated with Growth Hormone (GH). This could be of interest for endocrinologists prescribing GH in clinical practice because strict dosing may become even more important. Next to that, scientific evidence for clinical practice is wanted. Objective: Next to cardiovascular risk factors (main objectives: body composition and lipid profile; secondary objectives: remainder) we investigate the effect on glucose metabolism, physical performance, and neuropsychological functioning of different levels of IGF-I in GH treated GHD men and women. Study design: Open-label randomized trial. Study population: At least 32 subjects, both childhood as adult onset GHD men and women, receiving GH treatment for at least one year, with an age between 20 and 65 years. Intervention: At entry subjects are already receiving GH treatment according to general clinical practice, and are expected to demonstrate an IGF-I concentration of 0 - 1 SD score (SDS) (normal dose). The group of men and group of women will be randomized to receive either a decrease of their regular dose of GH treatment (IGF-I target level of -2 - -1 SDS) (low dose), or an increase of their regular dose, (IGF-I target level of 1 - 2 SDS) (high dose) for at least 24 weeks.
This proposal will address the existent gaps in the literature by identifying barriers and facilitators to participation in physical activity in inner-city minority elementary schoolchildren with asthma, more that half of whom are also overweight; developing and refining a school-based intervention in partnership with the community to improve physical activity; and conducting a pilot randomized controlled trial of the intervention to determine feasibility and obtain preliminary data for a future large-scale trial.
In an effort to address the physical inactivity crisis among adolescents, the present study will examine the efficacy of using an already established Web-based social networking platform (i.e., Facebook) to deliver a physical activity intervention to adolescents.
The purpose of the study is to identify lifestyle factors associated with PCOS and understand how diet and activity levels impact features of PCOS. The secondary aim is to examine psychosocial factors (e.g., health beliefs) of women with PCOS.
The aim of this study is to test a methodology of counseling on physical activity among Community Health Workers working within primary health care in Brazil.
This study aims to assess the uptake, effectiveness, and cost-effectiveness of a scalable walking programme for full-time employees both with and without incentives.
To verify changes in physical activity levels, metabolic markers, and physical fitness as results of two physical activity interventions within the Brazilian public health system (primary health care).
While most of the research on integrated approaches of occupational health and safety and worksite health promotion to date has focused on manufacturing settings, employment is shifting to the service sector. Within this sector, health care employs over 12 million workers, and is the second fastest growing industry in the U.S. economy. In contrast to workers in other industries, rates of occupational injuries and illnesses among health care workers have increased over the past decade. The purpose of this study is to lay the foundation for integrated interventions in health care through examination of the associations of worker health outcomes and risks on and off the job with work policies and practices and to address the prevalent issues of musculoskeletal disorders (MSDs), particularly low back pain disability (LBPD), and health promotions through physical activity among patient care workers. The specific aims of this study are: 1. To estimate the efficacy and determine the feasibility of an integrated intervention, addressing both health protection and health promotion in order to reduce MSD symptoms and improve health behaviors among healthcare workers. We will assess between-group differences in MSD symptoms, health behaviors, including physical activity, and a set of secondary outcomes, including unplanned absence, reported injuries, worker compensation claims and costs, turnover and retention, intention to leave the job, and work-role function. This study will explore the working hypothesis that: Workers employed at baseline in patient-care units receiving the intervention will report greater reductions in their MSD symptoms (primary outcome) and greater improvements in health behaviors, compared with workers employed at baseline in units assigned to the Usual Care control group. 2. To determine the factors in the work environment which contribute over time to reductions in MSD symptoms and improvements in safe and healthy behaviors. (1) The work environment, work organization, and psychosocial factors, measured in our current study, will be associated with changes in workers' health behaviors and health outcomes between the assessments in the current and proposed studies; (2) Improvements in the work environment over time will be associated with improvements in workers' health behaviors and health outcomes. We will conduct multilevel modeling analysis to evaluate the simultaneous effects of worker-level and unit-level factors on MSD symptoms and safety and health behaviors.