Depression and anxiety impact millions across the globe. While treatments like medication and psychotherapy (often referred to as talk therapy) can be very helpful, they aren’t always accessible due to factors like cost, stigma, and long waiting times for appointments. Not to mention, some people are wary of potential side effects from medications.
So, what about exercise? Our recent research shows that physical activity might be as effective as therapy or medication for some individuals. This is especially true when the exercise is social and guided by a professional, like in a gym class or a running club.
Let’s delve into the details.
What We Already Knew
Physical activity has long been viewed as a potential treatment for anxiety and depression because it helps release “feel-good” chemicals in the brain, which can enhance mood and alleviate stress.
However, the data can often feel mixed. Numerous studies with varying results leave us questioning how much exercise is truly beneficial, what types are most effective, and who might benefit the most.
Over the past twenty years, various meta-analyses have been conducted to explore exercise’s impact on these mental health issues. Unfortunately, gaps still remain—especially concerning how effective exercise is for different age groups and whether certain exercise types are more beneficial than others.
Many of the studies have involved participants with other health conditions, like diabetes or arthritis. This complicates the ability to apply the findings more widely.
What We Did
Our research aimed to clarify this confusion. We performed a “meta-meta-analysis,” systematically reviewing 81 existing meta-analyses to really determine what the evidence demonstrates.
This encompassed data from nearly 80,000 participants across over 1,000 original trials.
We looked at various factors that could explain discrepancies in the findings, such as:
- The participants’ backgrounds (those diagnosed with depression or anxiety versus individuals merely exhibiting symptoms, different age brackets, and pregnant women)
- The types of exercises conducted (comparing aerobic activities to resistance training and mind-body exercises like yoga, as well as professional supervision, intensity, and duration)
- Whether the exercise was completed individually or in groups.
We used advanced statistical techniques to pinpoint and measure the specific impact of exercise, without contamination from other chronic conditions.
This data focused on the effects of exercise by itself on depression and anxiety. Still, understanding the potential impact when combined with antidepressants or therapy could warrant further research.
What Did the Study Find?
Exercise is effective at reducing both depression and anxiety but with some important nuances.
Specifically, we found a strong effect on depression symptoms and a moderate effect on anxiety when compared to inactivity.
The advantages of exercise were comparable to and, in some cases, surpassed those of more commonly recommended mental health treatments like therapy and antidepressants.
Crucially, we identified two groups that saw the most benefits: young adults aged 18 to 30 and women who had recently given birth.
Many women face obstacles to exercising postpartum, including time constraints, feelings of self-doubt, and limited access to appropriate activities. Our findings suggest that making exercise more accessible could be a vital approach to supporting mental health in this critical phase.
How You Exercise Matters
We discovered that aerobic activities—like walking, running, cycling, or swimming—tend to be most effective at alleviating both depression and anxiety symptoms.
Nonetheless, all forms of exercise provided benefits, including resistance training and mind-body practices.
For depression, those who exercised with others and under professional guidance, like in group fitness classes, experienced even greater improvements.
However, we lacked sufficient data regarding group or supervised exercise effects on anxiety, indicating a need for further investigation.
Interestingly, exercising once or twice a week seemed to have similar effects on depression as more frequent workouts. Plus, the intensity appeared to make little difference, as all levels were beneficial.
For anxiety, the best results emerged when exercise was:
- Performed consistently over eight weeks, and
- Conducted at a lower intensity, such as leisurely walking or swimming.
So, What Does All This Mean?
Our research highlights that exercise is a valid, evidence-supported treatment option for both depression and anxiety, especially for individuals with diagnosed conditions.
That said, simply advising patients to “exercise more” probably won’t yield significant results.
The evidence suggests structured, supervised exercise—including components of social interaction—works best for enhancing mental health. This social aspect might help keep individuals motivated.
Clinicians should consider this insight, guiding patients towards specific programs, like aerobic fitness classes or supervised walking groups, rather than offering vague suggestions.
Moreover, such exercise could be particularly effective for younger adults dealing with depression and mothers in the postpartum period.
The Takeaway
For those hesitant about medication or facing long waits for therapy, supervised group exercise can be a viable alternative. It’s grounded in evidence and can be started whenever you’re ready.
However, seeking professional guidance remains essential. If you’re experiencing symptoms of anxiety or depression, it’s a good idea to consult a healthcare provider. They’ll help determine how exercise might fit into your broader treatment strategy, potentially in tandem with therapy or medication.
