A study spanning over 30 years suggests that children with higher cardiorespiratory fitness may have a lower risk of developing depression as adults.

Researchers from the University of Tasmania and Adelaide University have found a link between childhood fitness and mental health outcomes later in life. Using data from the Childhood Determinants of Adult Health study, the team observed that children and adolescents with better cardiorespiratory fitness were less likely to experience depression as adults. The findings, published in the Journal of Affective Disorders, indicate this association is particularly strong among females.

Study Methodology and Findings

The study analyzed more than 1,000 participants who were assessed for cardio and muscular fitness between the ages of 7 and 15 in 1985. Researchers reassessed these individuals more than three decades later, when they were between 36 and 49 years old, using a World Health Organization diagnostic interview to identify instances of depression. Physical tests during childhood included a 1.6-kilometer run and a standing long jump, with some participants also completing cycling and handgrip strength tests.

Implications for Mental Health

While the study does not establish that a lack of childhood fitness causes adult depression, researchers suggest that fitness may be a modifiable factor in long-term mental health. Dr. Kylie Smith noted that fitness is likely one of many contributing factors to depression risk. The research team emphasizes that identifying such factors is important for developing strategies to reduce the prevalence of depression.