Exercise and Its Benefits in Dementia

Introduction:

A healthy mind and body are characterized by full physical functionality. However, conditions like aging and different diseased states affect the functionality of physical performance. In most cases, a decline in cognitive abilities is seen. This decline in cognitive abilities affects not only physical performance but also quality of life. Exercise can improve a person's cognitive abilities and provide physical well-being.

What Is Dementia?

The overall decline in memory functions and cognitive skills is known as dementia. This condition is also known as a major neurocognitive disorder. According to data provided by the World Health Organization, almost 55 million people around the world suffer from this condition. The prevalence of such neurocognitive disorders is highest among people from middle and low-economic countries. Also, in most cases, elderly individuals are commonly affected. However, in recent times, the prevalence of dementia has increased among middle-aged and young individuals. Clinically, there are four types of dementia. These are;

1. Alzheimer’s Disease: Dementia caused by this is known as Alzheimer’s dementia. Alzheimer’s disease is a neurodegenerative disorder that is responsible for the loss of memory. Gradual loss of memory and neurons is associated with loss of cognitive functions and behavioral changes. Alzheimer's disease results from the degeneration of neurons and nerve cells in the brain, which is attributed to the build-up of amyloid-beta peptide plaques. These plaques are commonly found in the medial temporal lobe, the entorhinal cortex, and neocortical structures. Apart from this, other causative factors like the presence of neurofibrillary tangles (structures formed due to the presence of tau proteins) and granulovacuolar degeneration of hippocampal pyramidal cells are also responsible for such types of dementia.

2. Vascular Dementia: This type of dementia is the most common type of dementia. 15 percent of cases belong to this category. Age-related brain changes lead to degenerative changes in the neurons. As a result, slow conduction of the nerve impulse and a change in the levels of neurotransmitters can be seen. Also, a reduction in the gray and white matter of the brain causes a reduction in brain functioning. Apart from this, diseases that lead to changes in the blood vessels and blood flow may cause this type of dementia. Such diseases are hypertension (increased pressure of the blood), diabetes mellitus (increased sugar level in the blood), cardiovascular disorders, and stroke (lack of blood supply in the brain).

3. Lewy Body Dementia: This condition is linked to irregular accumulations of alpha-synuclein protein in the brain, known as Lewy bodies. Though some researchers believe that this type of dementia is linked to Parkinson’s disease (a degenerative nerve disease), others disagree.

4. Frontotemporal Dementia: Around 25 percent of cases of dementia related to persons above the age of 65 are frontotemporal dementia. The exact causes of this type of dementia are not known. However, genetic factors are most commonly involved in these cases. According to researchers, frontotemporal dementia (FTD) is caused by a reduction in neurons and irregular levels or types of tau and TDP-43 proteins in the brain. These proteins are inherent in the body and play a crucial role in maintaining cellular functions.

What Are the Physical Exercises for Dementia Patients?

Different types of exercises can be used for dementia care. Exercises in dementia are:

1. Aerobic Exercises: Aerobic exercises like walking, running, and swimming improve cardio-respiratory functions. Also, these exercises improve overall blood circulation and metabolic rate in the body.

2. Strength Exercises: Strength exercises or resistance training are performed with the help of weights, resistance bands, and weight machines. These exercises improve muscle strength, muscle mass, and muscle endurance. Apart from this, these exercises improve muscular movement and neuromotor coordination.

3. Stretching Exercises: Stretching and flexibility are the exercises that cause the lengthening and elongation of specific groups of muscles and tendons. These exercises improve joint movement, muscle-tendon flexibility, and range of motion.

4. Traditional Exercises: Traditional exercises like tai-chi and yoga are also regarded as exercises for dementia. These exercises improve flexibility, muscle coordination, and breathing.

What Are the Advantages of Exercises in Dementia?

Exercises in dementia are beneficial. These exercises not only help to prevent the risk of dementia but also reduce the severity of the dementia. Other, than this, physical exercises may also improve the symptoms of dementia.

• Exercise for Dementia Prevention: According to research, regular exercise and physical activity can reduce the prevalence of dementia by around 28 percent. One of the main advantages of regular physical activity is that it prevents vascular changes. Regular physical activity causes vascular remodeling, preventing blood vessel changes due to diseases like hypertension and cardiovascular disorders. Also, such changes increase blood supply to the heart and brain. Also, regular exercise can reduce systemic inflammation and prevent age-related nerve damage. Apart from this, daily physical activity is beneficial for patients suffering from diabetes mellitus. Regular exercises reduce diabetic neural damage, reduce the levels of cholesterol in the blood, and reduce insulin resistance.

• Exercises for Dementia Symptoms: One of the main symptoms of dementia is the loss of cognitive functions. As a result, loss of muscle coordination, loss of muscle mass, and loss of neuromuscular coordination are observed. Exercises in dementia care improve muscle mass, muscle strength, muscle coordination, and neuromuscular coordination. Also, these exercises improve joint movement, stability, and flexibility. A loss of cognitive function is also related to the reduction in brain functions and neural damage. Regular exercise not only improves blood circulation but also affects the functioning of the hypothalamus-pituitary-adrenal axis. This improves the levels of neurotransmitters in the body. As a result, associated symptoms related to dementia, such as depression, stress, and anxiety, are reduced. Apart from this, different brain exercises play a pivotal role in dementia care. These brain exercises in dementia care include solving puzzles, playing card games, and board games.

Conclusion:

Dementia is characterized by a loss of cognitive abilities due to the loss of brain and neural functions. Exercises for dementia are beneficial in several ways. These exercises not only prevent dementia but also reduce the severity associated with it. Moreover, they also improve the quality of life in dementia patients. Exercises for dementia include aerobic exercises, strength training, and stretching exercises.