A meta-analysis of 17 randomized controlled trials (RCTs), which included more than 1,000 participants with mental or physical illnesses, showed there was a significant reduction in suicide attempts in participants randomly assigned to receive exercise interventions, compared with inactive controls. However, there were no differences between the exercise and the control groups in suicidal ideation or mortality.
On the other hand, there was also no significant difference in dropout rates between those randomly assigned to exercise versus inactive controls, suggesting that people with mental or physical impairments are able to adhere to exercise regimens.
“A common misconception is that patients, particularly those suffering from mental of physical illness, are not willing or motivated enough to participate in an exercise [regimen], and this has led to primary care providers underprescribing exercise to those with mental or physical illness,” lead author Nicholas Fabiano, MD, a resident in the department of psychiatry at the University of Ottawa, told this news organization.
As a result of the study findings, “we recommend that providers do not have apprehension about prescribing exercise to patients with physical or mental illness. Exercise may be an effective way to reduce suicidal behaviors” in these patients, he said.
The study was published online in the Journal of Affective Disorders.
Physical, mental health strongly linked
Existing literature has “demonstrated a protective effect of physical activity on suicidal ideation in the general population,” but to date there have been no systematic reviews or meta-analyses investigating its impact on suicide-related outcomes in patients with physical or mental illness, the authors write.
“Those with mental or physical illness are at increased risk of suicide, compared to the general population,” Dr. Fabiano commented.
“We often split up ‘mental health’ and ‘physical health’ in medicine; however, I believe that the two are more on a continuum and a holistic term, such as ‘health,’ should be used instead,” he added.
He noted that mental and physical health are “inexorably intertwined” and those with physical illness are more prone to developing mental illness, whereas those with mental illness are more likely to suffer from a variety of other medical conditions. “Therefore, when treating those with mental illness, it is also imperative that we bolster one’s physical health through easily accessible activities such as exercise,” he said.
The goal of the study was to determine whether individuals with “any mental, physical, clinical, or subclinical condition” might benefit from exercise, particularly in relation to suicide-related outcomes. They searched multiple databases from inception to June 2022 to identify RCTs investigating exercise and suicidal ideation in participants with physical or mental conditions.
Of 673 studies, 17 met the inclusion criteria (total of 1,021 participants). Participants’ mean age was 42.7 years, 82% were female, and 54% were randomly assigned to an exercise intervention.
Most studies (82%) focused on clinical versus subclinical outcomes. Depression was the most commonly included condition (59%). Aerobic exercise (53%) was the most common form of exercise used in the active study groups. This was followed by mind-body exercise and strength training (53%, 17.6%, and 17.6%, respectively). The mean follow-up time was 10 weeks.