Portsmouth Study Tests Cold Water Swimming for Depression Relief

Researchers at the University of Portsmouth are conducting a study to see if cold water swimming can alleviate symptoms of depression and anxiety. The study, known as Outside 2, aims to recruit 480 participants who experience mild to moderate depression. The trial will take place at 15 locations across England, including Lymington, Shoreham, Maidenhead, and Christchurch.

The study builds on a previous trial and is designed to provide solid evidence regarding the mental health benefits of cold water exposure. Dr. Heather Massey, a senior lecturer in sport, health, and exercise science, is leading the research. She emphasizes the need for definitive findings to understand how cold water swimming might impact mental health.

Participants will be divided into two groups. One group will undergo an eight-week swimming program while continuing their current medication for depression and anxiety. The second group will maintain their existing treatment and then join the swimming program after the initial eight weeks. This controlled approach will allow researchers to compare the effects of cold water swimming on mental health against standard treatment methods.

Cold water swimming gained popularity during the Covid-19 pandemic, as many sought outdoor activities during lockdowns. Previous studies have indicated a positive correlation between cold water immersion and mental well-being, but the Portsmouth researchers aim for a larger sample size to strengthen their findings.

Lynne MacFarlane, a participant from the New Forest in Hampshire, was skeptical about the potential benefits of cold water swimming for her depression. However, she reported a noticeable improvement in her symptoms after participating in the course. This anecdotal evidence aligns with observations from swim coach Nina Yates, who noted that her clients often experience a boost in mood following open water sessions.

The two-year study is funded by the National Institute for Health and Care Research and aims to explore the possibility of integrating cold water therapy into standard treatment options prescribed by general practitioners. Dr. Massey believes that the results could provide valuable information about who benefits most from cold water swimming, enhancing treatment options for those suffering from depression and anxiety.