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A Randomised Clinical Trial Of Cognitive Activity For Older Adults With Mild Cognitive Impairment
Funder
National Health and Medical Research Council
Funding Amount
$490,127.00
Summary
Australia’s population is ageing rapidly and so is the frequency of age-related disorders. Dementia is one of the most frequent mental health disorders of older people and one of the leading causes of years of life lost due to disability in Australia. Mild Cognitive Impairment (MCI) in old age is considered an important clinical state potentially predictive of future cognitive decline. There is increasing evidence that the onset of dementia can be delayed with targeting potentially modifiable ri ....Australia’s population is ageing rapidly and so is the frequency of age-related disorders. Dementia is one of the most frequent mental health disorders of older people and one of the leading causes of years of life lost due to disability in Australia. Mild Cognitive Impairment (MCI) in old age is considered an important clinical state potentially predictive of future cognitive decline. There is increasing evidence that the onset of dementia can be delayed with targeting potentially modifiable risk factors. In older adults, frequent participation in mentally stimulating leisure activities has been associated with stronger cognitive (abilities such as memory) performances and reduced risk of dementia. Further, the rate of cognitive and functional decline can be influenced by cognitive intervention strategies, though few randomised control studies have explored these findings with individuals who have a diagnosis of MCI. The primary focus of this research is to determine whether a structured program of cognitive activity (CA) can delay progression of cognitive decline amongst older adults with MCI. 160 older adults will be randomised (by chance, like the flip of a coin) to either a 10 week CA intervention with a focus on cognitive training and rehabilitation techniques or a 10 week control educational intervention providing information on aging and retirement. Their cognitive performance, quality of life and functional level will be monitored during follow-up. The proposed study will improve the understanding of possible modifying factors of cognition and highlight the potential of intervention in an older age population. The obtained results will have implications for policy recommendations regarding health care resources and facilitate changes in the approach and management of individuals with MCI.Read moreRead less
Gene-environment Interaction In Healthy Brain Ageing And Age Related Neurodegeneration
Funder
National Health and Medical Research Council
Funding Amount
$2,162,805.00
Summary
Healthy ageing is characterised by low level of disability, high cognitive and functional capacity, and an active engagement in life. The most important ingredient of healthy ageing is a healthy brain, bereft of age-related diseases and dysfunction. Brain ageing and brain diseases are determined by multiple genetic factors that interact with environmental influences. The genes are multiple, the majority of which have a small influence. This study is an attempt to identify some of these genes and ....Healthy ageing is characterised by low level of disability, high cognitive and functional capacity, and an active engagement in life. The most important ingredient of healthy ageing is a healthy brain, bereft of age-related diseases and dysfunction. Brain ageing and brain diseases are determined by multiple genetic factors that interact with environmental influences. The genes are multiple, the majority of which have a small influence. This study is an attempt to identify some of these genes and investigate their interactions with environmental factors. It will use a unique resource, the NHMRC Australian Twin Registry (ATR) to identify elderly twins, and will also include the siblings of these twins so as to increase the ability to identify the important factors. The participants, who are listed on the ATR and recruited from NSW, Queensland and Victoria, will receive detailed neurological, psychiatric and cognitive assessments, and will undergo brain MRI scans. Their blood samples will be used to measure key chemicals that may affect brain ageing and to extract DNA for genetic tests. They will be followed-up every two years thereafter, and changes in their brain structure and cognitive functioning will be examined. Available statistical models will be used to examine gene-environment interactions and specific genes will be explored for their contribution to the additive genetic effects. This study will yield an important resource for national and international collaborations and has the potential to discover new genes.Read moreRead less
The Role Of Metabolic And Inflammatory Factors In Cognitive Decline And Cerebrovascular Pathology In The Elderly
Funder
National Health and Medical Research Council
Funding Amount
$945,987.00
Summary
Metabolic factors and measures of inflammation in the body have recently been shown to influence mental function and increase the risk of developing age-related disorders such as Alzheimer’s disease. The influence metabolic factors and inflammation have on function of the ageing brain is likely to be determined by complex interplay between many factors, such as physical health, lifestyle, nutrition and our genes. By studying these factors and how they relate to one another in large groups of eld ....Metabolic factors and measures of inflammation in the body have recently been shown to influence mental function and increase the risk of developing age-related disorders such as Alzheimer’s disease. The influence metabolic factors and inflammation have on function of the ageing brain is likely to be determined by complex interplay between many factors, such as physical health, lifestyle, nutrition and our genes. By studying these factors and how they relate to one another in large groups of elderly individuals, we will be able to determine the role these factors play in brain ageing. In addition we will be able to determine an ‘at risk’ profile for elderly individuals for accelerated ageing effects. Identification of this profile is important as it will allow the development of interventions which may prevent or delay the onset of cognitive decline in late life. We plan to study the impact of metabolic and inflammatory factors on brain ageing and in two groups of elderly individuals both of which are currently being studied in detail by our research team. By using these existing groups we will minimize the costs associated with our research, but maximize the research benefit and the benefit to society. Our groups include a large community sample of elderly individuals aged 70-90 years and a large group of elderly twins aged over 65 years. Our use of twins for the study is particularly important as it will help us separate genetic and environmental influences on the measures. We will measure multiple metabolic and inflammatory factors in the body and determine their relationship to detailed tests of cognitive function and to cerebrovascular pathology on brain magnetic resonance imaging. We will look at how these factors relate to one another and which factors are most strongly associated with accelerated ageing. We will be able to follow subjects in each group over a 2 year interval to see which factors most strongly predict change in cognitive function and cerebrovascular pathology over time. Our research is unique in its inclusion of multiple factors which may affect brain ageing, its ability to look in detail at the contribution of genetic influences on metabolic and inflammatory factors, and in our planned follow-up of these individuals.Read moreRead less
Does Vitamin D Supplementation Reduce Cognitive Decline?
Funder
National Health and Medical Research Council
Funding Amount
$646,601.00
Summary
Australia's population is ageing rapidly and so is the frequency of age-related disorders. Dementia is one of the most frequent mental health disorders of older people and one of the leading causes of years of life lost due to disability in Australia. Mild Cognitive Impairment (MCI) in old age is considered an important clinical state predictive of future cognitive decline. There is increasing evidence that the onset of dementia can be delayed with targeting potentially modifiable risk factors. ....Australia's population is ageing rapidly and so is the frequency of age-related disorders. Dementia is one of the most frequent mental health disorders of older people and one of the leading causes of years of life lost due to disability in Australia. Mild Cognitive Impairment (MCI) in old age is considered an important clinical state predictive of future cognitive decline. There is increasing evidence that the onset of dementia can be delayed with targeting potentially modifiable risk factors. Vitamin D is important for healthy bones and muscle function, but is now also discussed as being important for healthy brain function. The purpose of this randomised placebo-controlled clinical trial is to investigate whether supplementation with vitamin D for 18 months in older adults with MCI who have low vitamin D levels, can help to reduce cognitive decline. 110 older adults with MCI will be randomised (by chance, like the flip of a coin) to either active treatment or placebo. Their cognition (such as memory) performance, quality of life and functional level will be compared at 6, 12, and 18 months. If our hypothesis is confirmed, vitamin D supplementation might prove to be a simple, effective and inexpensive way of delaying cognitive decline in people at risk for dementia. This could lead to the reconsideration of current sun exposure policies in Australia and the more widespread use of food fortification and supplementation.Read moreRead less
Does Regular Tai Chi Practice Delay Ageing Of Cells And Improve Cellular Energy Functions?
Funder
National Health and Medical Research Council
Funding Amount
$417,873.00
Summary
Tai Chi is a popular traditional health exercise that has been shown to be effective in improving health-related quality of life in aged populations and patients with acute and chronic conditions. However, the scientific evidence and mechanisms of Tai Chi at the level of the cells in the body is not clear. This project aims to investigate the mechanisms of Tai Chi to provide a better understanding of the scientific basis and offering greater confidence in using Tai Chi to promote health. We prop ....Tai Chi is a popular traditional health exercise that has been shown to be effective in improving health-related quality of life in aged populations and patients with acute and chronic conditions. However, the scientific evidence and mechanisms of Tai Chi at the level of the cells in the body is not clear. This project aims to investigate the mechanisms of Tai Chi to provide a better understanding of the scientific basis and offering greater confidence in using Tai Chi to promote health. We propose to do a study to compare cellular measures in a group of established Tai Chi practitioners with a group who have not practised Tai Chi. It will include at least 400 members of the general public aged 30 years and over. One group will comprise long-term Tai Chi practitioners (3 years or more) and the comparison group will be those who are just starting to learn Tai Chi. The participants will come from many Tai Chi centres around Melbourne. Our collaborators (2 renowned Tai Chi teachers) will facilitate recruitment. We will collect mouth wash samples from participants and measure two major biomarkers (telomere and mitochondria). The end sections of a chromosome are called the telomere and there is evidence that telomeres get shorter as we age and when we get sick with conditions such as heart problems. Mitochondria are the powerhouse within cells that convert energy from food into a form that cells can use. The mitochondria and its function can be affected by stress in a person’s life and this might be helped by Tai Chi. Since this study aims at analysing the much-claimed benefits of Tai Chi using a scientific evidence-based approach, the two biomarkers we are planning to measure will tell us whether such benefits are reflected in the improvement of the function of cells. Using the biomarkers and some questionnaire information, we will analyse the data to see whether Tai Chi practitioners have longer telomere and better mitochondrial function than those who have not practiced Tai Chi.Read moreRead less
THE DETECTION AND MANAGEMENT OF DEMENTIA IN GENERAL PRACTICE.
Funder
National Health and Medical Research Council
Funding Amount
$499,977.00
Summary
This research aims to examine a new method and practice guidelines for detection of early dementia. General practitioners will be screened on their ability to diagnose and manage dementia and to distinguish it from other diseases. Patient outcomes - including quality of life, depression, and satisfaction with care and referral indicators - will be examined.
Evidence For Psychological And-or Educational Interventions For Cancer-related Fatigue: A Systematic Review
Funder
National Health and Medical Research Council
Funding Amount
$28,283.00
Summary
Potential benefits to the community: Fatigue is one of the most common and distressing symptoms experienced by people with cancer and can exacerbate the experience of other symptoms, negatively affect mood, and impact on function and quality of life. Understanding which interventions are effective in helping people cope with cancer-related fatigue is important to inform decision-making by consumers, clinicians working in palliative care and policy makers. Objectives: This study aims to systemati ....Potential benefits to the community: Fatigue is one of the most common and distressing symptoms experienced by people with cancer and can exacerbate the experience of other symptoms, negatively affect mood, and impact on function and quality of life. Understanding which interventions are effective in helping people cope with cancer-related fatigue is important to inform decision-making by consumers, clinicians working in palliative care and policy makers. Objectives: This study aims to systematically review the evidence for psychological and-or educational interventions for managing cancer-related fatigue. Methods: This study will use the Cochrane Collaboration’s methodology to search, critically appraise, and analyse randomised controlled trials of psychological and-or educational interventions. This will involve collaboration with consumers and with the Cochrane Pain, Palliative Care, and Supportive Care Collaborative Review Group. This review will inform decision-making at all levels, assist in research translation and identify further gaps in the research regarding this distressing symptom.Read moreRead less