Understanding Dementia and the Role of Exercise Physiology

Dementia refers to a set of symptoms that result from damage to the brain, leading to noticeable difficulties with many brain functions that may disrupt day-to-day living. It isn’t one specific condition, but rather a clinical syndrome with many possible causes; the most common being Alzheimer’s disease, Lewy Body Dementia and Vascular Dementia to name a few.

In simple terms, dementia progressively affects the brain’s ability to function normally. This can lead to difficulties with:

• memory,
• language,
• problem-solving,
• and even physical coordination.

As dementia progresses, this can present as confusion, mood changes, and a decreased ability to perform everyday activities such as dressing, cooking, or managing finances.

Living with dementia involves navigating numerous limitations. Cognitive decline means that routine tasks can become confusing or overwhelming. There can be increased risks of falls, wandering, and difficulties communicating needs or pain. Emotional and social isolation are common concerns, as well as managing comorbidities like diabetes or heart disease.
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Family members and caregivers often play a critical role but may also experience significant stress and burnout. The fluctuating nature of symptoms means that each day can be different, requiring flexible and compassionate approaches to therapy.

The Role of Exercise Physiology in Dementia Care

Exercise physiology focuses on using physical activity and exercise programs to improve health outcomes. A growing body of research supports the benefits of exercise for those with dementia. The benefits of exercise are more wholistic than just the expected physical outcomes, with some improvements evident in cognition, mood and independence.

Studies suggest that moderate aerobic exercise combined with strength and balance training can improve cognitive structures and function. For example:

• Numerous new studies have found that regular physical activity slowed cognitive decline in people with mild to moderate dementia.
• Research shows that exercise can reduce symptoms like agitation and improve sleep patterns.
• Exercise programs tailored by exercise physiologists can be adapted to individual abilities, maximizing safety and effectiveness.
• Regular advances in knowledge are leading to new and ground-breaking science, for instance the growing field questioning the possibility of neurogenesis (formation of new nerve cells, particularly in the hippocampus part of the brain)

While exercise is not a cure, it is a valuable component of comprehensive dementia care, supporting both physical and mental health. The most common forms of prescription may include:

1. Aerobic intensity at increasing intensities as tolerable
2. Strength training to prevent muscle loss and reduce falls risk
3. Balance and coordination training enhancing body awareness
4. Dual tasking to stimulate neuroplasticity and reflect real world challenges
5. Flexibility and range of motion to support against stiffness and manage joint health
6. Group based exercises can be included for social engagement or motivation

Resources and References for People with Dementia and Caregivers

​If you or a loved one are living with dementia, these resources can provide some further guidance, support, and professional assistance:

• Dementia Australia: Provides resources, counselling, and education tailored for Australians affected by dementia. www.dementia.org.au
• Alzheimer’s Association: Offers extensive information on dementia, caregiving tips, and local support groups. www.alz.org
• Exercise & Sports Science Australia: Find accredited exercise physiologists who can design tailored programs for dementia care. www.essa.org.au
• Local Health Services: Many community health centres offer exercise programs designed for older adults and those with cognitive impairment.

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Thomas Harrison
​Accredited Exercise Physiologist