- Focus on Secondary Condition Prevention: Decreasing Secondary Conditions in People with Traumatic Brain Injury (TBI) Using Exercise
- Osteoarthritis and Exercise
- Physical activity dose-response effects on outcomes of depression and anxiety.
- Obesity is a Major Concern for Youth and Adults with Disabilities
- Physical Activity for People Seeking Relief from ANXIETY and DEPRESSION
- Focus on Secondary Condition Prevention: Exercise as a Way of Reducing Pain for People with Fibromyalgia
- Functional and Neuromotor Performance in Older Adults
- Systemic Lupus
- Recommendations for physical activity in patients with multiple sclerosis
- Alzheimer's Disease and Exercise
- Seeking Balance in Life
- Active Lifestyle Protects Against Incident Low Back Pain in Seniors
- Yoga Asana Sessions Increase Brain GABA Levels: A Pilot Study
- 2008-04: The Wonder Drug: Exercise is Medicine™
- What I Have Learned This Month: It Takes Patience to be Active for a Lifetime
- Community Voice: More Than a Diagnosis
- Voice from the Community: NCHPAD Resources for Management of Cerebral Palsy
- 'Finding a good thing': the use of quantitative and qualitative methods to evaluate an exercise class and promote exercise for adults with mobility impairments.
Depression is one of the most common illnesses in the United States. Approximately 21 million people are affected by depression each year and it is one of the leading causes of disability for individuals between the ages of 15 and 44 (CDC).
Researchers believe that depression is a result of an imbalance of naturally occurring chemicals (neurotransmitters) produced in our bodies called serotonin and norepinephrine (Meyers, 2000). These neurotransmitters, also known as "chemical messengers," help nerve cells communicate with one another by sending and receiving messages. These messengers are believed to regulate individuals' overall mood and pain receptors. Vaidya & Duman (2001) further explain that the regulation of intracellular messenger cascades exerts a powerful control on almost all aspects of neuronal function, inclusive of neuronal morphology, gene expression, activity, and survival. Those who experience depression are believed to have a low supply of chemical messengers, thus resulting in depressive symptoms. Meyers (2000) states that the synthesis of most neurotransmitters is controlled within the brain. For some neurotransmitters, the amount of biochemical precursors present in the brain can influence their rate of synthesis.
Depression is also a common secondary condition. It is often times a comorbidity of other chronic illnesses and diseases such as diabetes, heart disease, obesity, spinal cord injuries, multiple sclerosis, stroke, Parkinson's disease, and arthritis. Depression can also worsen or exacerbate an individual's current condition.