Contextual Influences On Children's And Adolescent's Physical Activity
Funder
National Health and Medical Research Council
Funding Amount
$440,950.00
Summary
Physical inactivity has been linked to several chronic health conditions among children and adolescents. However, there has been no research that has examined the long-term physical activity habits of Australian children and how these habits change as children move into adolescence. In addition, there is only limited information regarding the factors that influence children's physical activity. This study aims to examine changes in physical activity and sedentary behaviours, such as television v ....Physical inactivity has been linked to several chronic health conditions among children and adolescents. However, there has been no research that has examined the long-term physical activity habits of Australian children and how these habits change as children move into adolescence. In addition, there is only limited information regarding the factors that influence children's physical activity. This study aims to examine changes in physical activity and sedentary behaviours, such as television viewing and computer use, that occur over three years, and also over five years, among children aged 5-6 years and 10-12 years in 2001 (baseline). As such, this study will provide information about children's physical activity habits through primary school and from late primary school to the end of secondary school. The study will also examine the influence of the family and neighbourhood environment on changes that occur in physical activity and sedentary behaviour over that time. This study is significant because it will provide information on the critical transition period between primary and secondary school. The study will identify when changes in these health behaviours occur, the extent of these changes, and the influence of factors in the family environment and the local neighbourhood on changes in these behaviours. Such information is vital to inform the development of strategies to promote and maintain health-enhancing physical activity levels and reduce sedentariness among children.Read moreRead less
Concord Hormones And Ageing In Men Project (CHAMP)
Funder
National Health and Medical Research Council
Funding Amount
$1,780,887.00
Summary
Throughout life men have poorer health than women, a health difference that extends into old age. In Australia in 2001, life expectancy for a 65 year old man was 20% less than for a 65 year old woman (81.6 years for men and 85.2 years for women). The study proposed here will fill major gaps in knowledge about key health problems in older men. The study will be called CHAMP: Concord Hormones and Ageing in Men Project. As people grow older, health problems that cause loss of independence and reduc ....Throughout life men have poorer health than women, a health difference that extends into old age. In Australia in 2001, life expectancy for a 65 year old man was 20% less than for a 65 year old woman (81.6 years for men and 85.2 years for women). The study proposed here will fill major gaps in knowledge about key health problems in older men. The study will be called CHAMP: Concord Hormones and Ageing in Men Project. As people grow older, health problems that cause loss of independence and reduced quality of life become increasingly important. The term 'geriatric giants' is sometimes used to describe these disabling syndromes: falls and fractures, cognitive impairment and dementia, urinary incontinence, and poor mobility and functional dependence. CHAMP has been designed to investigate the causes of, and inter-relationships between, these geriatric syndromes in men. Reproductive hormones are responsible for the fundamental biological differences between men and women. Underpinning CHAMP is the idea that age-related changes in reproductive hormones play an important role in the development of the geriatric syndromes in older men. There have been numerous studies of oestrogen and health in older women but only limited research on testosterone and other reproductive hormones in older men. CHAMP will be the largest study of the geriatric syndromes in older men ever conducted. The study will inlvolve 2800 men aged 65 years and over recruited from the community around Concord Hospital in Sydney. These men will each spend 3 hours at the study centre, where they will have a comprehensive physical examination and tests for osteoporosis, muscle weakness, dementia and urinary problems, as well as blood tests. This will all be repeated 2 years later.Read moreRead less
Preterm birth, a birth before the 37th week of pregnancy occurs for fewer than 8% of mothers but is associated with two-thirds of all fetal deaths and deaths of liveborn infants in the first month after birth. In the late 1990s those deaths are concentrated among very preterm births i.e. births before the 32nd week of pregnancy. Infants born very preterm are very likely to need neonatal intensive care, quite likely to have had major respiratory, infectious or other problems after birth, and to n ....Preterm birth, a birth before the 37th week of pregnancy occurs for fewer than 8% of mothers but is associated with two-thirds of all fetal deaths and deaths of liveborn infants in the first month after birth. In the late 1990s those deaths are concentrated among very preterm births i.e. births before the 32nd week of pregnancy. Infants born very preterm are very likely to need neonatal intensive care, quite likely to have had major respiratory, infectious or other problems after birth, and to need readmission to hospital in the first year after birth. Surviving infants are more likely to have major impairments, minor impairments, and school difficulties than infants born at term. There is a substantial impact on families, health services and society of very preterm birth.There has been no reduction in the proportion of births which are preterm, or very preterm in the last 20 years, though advances in treatment and care have markedly improved the survival of preterm and very preterm infants. This study will investigate the role of previous pregnancies which did not result in births (miscarriages and terminations), together with other procedures such as D and C (dilatation and curettage), in subsequent preterm birth. As these previous pregnancy losses are all fairly common experiences any associated risk is important and this particular factor has not been studied in this way before. There is preliminary evidence that they may be associated with preterm birth and the study will be able to measure the associations while taking into account all the other known risk factors. Other possible risk factors such as experiencing violence in pregnancy or social factors acting at a neighbourhood level will also be included. If it is found that previous pregnancy losses are independently associated with preterm birth it will be possible to develop and test preventive strategies.Read moreRead less
Osteoporosis is a major and increasing public health problem. Fracture, the ultimate consequence of osteoporosis is associated with significant morbidity, mortality and economic costs. The Dubbo Osteoporosis Epidemiology Study, starting in 1989, with over 2000 women and men, is one of the longest running epidemiological studies in osteoporosis worldwide. It has been at the forefront of epidemiological advances in osteoporosis. It has identified osteoporotic fracture risks including low bone dens ....Osteoporosis is a major and increasing public health problem. Fracture, the ultimate consequence of osteoporosis is associated with significant morbidity, mortality and economic costs. The Dubbo Osteoporosis Epidemiology Study, starting in 1989, with over 2000 women and men, is one of the longest running epidemiological studies in osteoporosis worldwide. It has been at the forefront of epidemiological advances in osteoporosis. It has identified osteoporotic fracture risks including low bone density and bone loss, muscle weakness and postural instability, as well as the extent of the problem in men, and the significant costs, ill-heath and mortality associated with fracture. Despite the clarification of risk factors over the past decade, there are significant gaps in knowledge about osteoporosis, particularly in the accurate prediction of fracture risk and in identification of factors related to fracture-associated mortality and survival post fracture. Although bone density is one of the best predictors of fracture risk, it incompletely discriminates between those who will fracture from those who will not. Although a number of clinical risk factors, and other measures of bone strength, such as quantitative ultrasound and geometry, have been shown to be independent predictors of fracture risk, it is not clear that these measures can be integrated with BMD to improve fracture prediction. The aim of the current study, is to develop and validate models using bone density, other measures of bone strength and clinical parameters that will more accurately predict fracture risk and mortality following fracture in older men and women. The more precise identification of those at high risk of fracture and at risk for poor outcomes following fracture will provide a rational basis for the development of more cost effective interventions for prevention of fracture and its associated morbidity and mortality.Read moreRead less