Selective Serotonin Reuptake Inhibitors (SSRIs) are the most common type of antidepressant medication. They work by increasing serotonin levels in the brain to improve mood. In clinical psychology, researchers often compare behavioral interventions, like exercise, directly to SSRIs to understand their value as a treatment.
When preparing for psychology entrance exams, you must be able to compare these treatments across three main areas: effectiveness, side effects, and long-term benefits.
1. Effectiveness
To measure effectiveness, clinical studies look at how well a treatment reduces symptoms of major depressive disorder.
- Mild to Moderate Depression: Research shows that a structured exercise program can be just as effective as SSRIs for treating mild to moderate depression. Both treatments show a similar reduction in depressive symptoms over a standard 12- to 16-week trial.
- Severe Depression: For severe depression, SSRIs are generally more effective and act faster. In these cases, exercise is rarely used alone. Instead, it is used as an adjunct treatment—an add-on therapy that helps the primary medication work better.
2. Side Effects
A major difference between medication and exercise lies in their side effect profiles. Side effects heavily influence whether a patient will stick with a treatment (known as treatment adherence).
- SSRIs: Common side effects include nausea, weight gain, sleep disturbances, and emotional blunting (feeling numb). Because of these negative effects, many patients stop taking their medication early.
- Exercise: The ”side effects” of exercise are overwhelmingly positive. They include improved cardiovascular health, better sleep quality, and increased energy. The primary negative risks are physical injuries or the high level of motivation required to start, which is often difficult for someone with depression.
3. Long-Term Benefits and Relapse
Clinical psychology does not just look at short-term relief; it also focuses on keeping depression from returning.
- Relapse Rates: Studies indicate that patients who use exercise to treat their depression often have lower relapse rates than those who rely solely on SSRIs.
- Self-Efficacy: Exercise builds self-efficacy, which is a person’s belief in their own ability to succeed and overcome challenges. When a patient actively exercises to improve their mood, they gain a sense of control over their mental health.
- Medication Withdrawal: SSRIs are a passive treatment. While they correct chemical imbalances, they do not teach coping skills. Furthermore, stopping SSRIs abruptly can cause withdrawal symptoms, and depression may return if the medication is stopped without other supports in place.
Key Takeaways for Exam Preparation
When analyzing clinical studies for your exams, remember these key points:
- Exercise and SSRIs have similar efficacy for mild to moderate depression.
- SSRIs have a higher rate of negative side effects, which can lower treatment adherence.
- Exercise promotes self-efficacy, which contributes to lower long-term relapse rates.