Retraining Body and Brain to Conquer Compulsions

Compulsive Behavior

Following the realisation that many aspects of the way we live our life, such as our diet, activity levels, and amount of screen time, can have a potent impact on mental health and brain functioning 'lifestyle' based interventions have become topical in medical research. In particular, much scientific attention has been devoted to the impact of physical exercise and various stress reduction techniques on mood disorders. We aim to extend this work and investigate their impact on compulsivity. We will do this by conducting a pilot proof-of-principal intervention study. The study will compare the impact of eight-weeks of: 1. regular physical exercise + stress management activity A, 2. regular physical exercise + stress management activity B, 3. lifestyle as usual. The participant cohort will be adults who endorse mild-moderate behavioural compulsivity on one of the following domains: * drinking alcohol * gambling * eating * washing or cleaning * checking * ordering or arranging objects

This study is investigating the impact of regular physical exercise and stress management activities on mental health and brain function. It is specifically focusing on how engaging in these activities might impact activity in brain circuits associated with compulsivity, and help to reduce compulsive patterns of behaviour. A compulsive behaviour is something that we do regularly, feel pressured to do, and have difficulty stopping even though it is not benefiting us. Having compulsive patterns of behaviour is very common. It's been estimated that as many as 80% of the general population experience compulsivity at some point in their lives. That's most of us! Compulsive behaviours range in severity from mild to entrenched, and can take many forms. For example, gambling too often or washing ones hands excessively. For some people what starts out as a mild pattern of behaviour, such as a glass of wine every night after a stressful day, can develop into a problem, like alcohol dependence. As so many people experience mild to moderate compulsivity it would be helpful to have accessible evidence-based strategies that reduce compulsive tendencies. One promising candidate is physical exercise. In addition to the well-known physical health benefits, regular exercise also has a potent positive effect on brain health and mental well being. Other candidates are specific stress management activities. Certain stress management techniques, such as brain training, meditation, psycho-education, music therapy, yoga, and guided relaxation, can promote optimal mental health, improve cognitive functioning and help keep the body's physiological arousal systems within a healthy range. Some stress management activities may also help to reduce compulsive behavioural patterns. Importantly, as physical exercise increases neuroplasticity (i.e. malleability of the brain), engaging in regular exercise may enhance the effectiveness of concurrent stress management activities. This research study is investigating the impact of eight-weeks of regular physical exercise paired with two different stress management activities on brain health, mental health, and compulsivity. Both of these activities have previously been shown to reduce stress and improve mental health, we are investigating whether one is more effective than the other. As regular exercise and stress management training are time consuming, taking part in the study will reduce the opportunity to engage in compulsive behaviours. As such, our primary focus for the study will not be a reduction in the time spent engaging in compulsive behaviour. Instead, we will focus on whether the interventions modulate aspects of brain function associated with compulsivity (e.g. hippocampal integrity, functional brain activity during reward processing), aspects of cognition associated with compulsivity (e.g. affective processing bias and decision making), indices of the bodies stress system (e.g. cortisol awakening response), and aspects of mental health and quality of life that can be compromised in sub-clinical compulsive populations (e.g. experiential avoidance, general well being, symptoms of anxiety and depression).

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