#46 Physical activity assessment study

<p>In this episode, recorded live at the Pain Science in Motion Congress in Brussels, we sit down with PhD researcher and physiotherapist Sophie van Dijk from the University of Antwerp. Sophie shares insights from her double poster presentation, focusing on the critical challenges and methodologies surrounding the assessment of physical activity in populations living with persistent pain.</p><p><br></p><p><b>Sophie’s Study: Measuring Activity in Persistent Pain</b></p><p><br></p><p>While physical activity is a cornerstone of chronic pain rehabilitation, staying active remains a massive hurdle for patients. To design effective, tailored interventions, clinicians must first be able to accurately track a patient's movement. Sophie van Dijk’s research addresses a fundamental clinical question: how do subjective patient self-reports compare to objective technological tracking?</p><p><br></p><p><b>The Trade-offs of Measurement</b></p><p><br></p><p>Both assessment methods have distinct pros and cons:</p><p><br></p><p>●       <b>Subjective Self-Reports (e.g., the IPAQ questionnaire):</b> These are cost-effective and provide rich context, showing exactly <i>where</i> and <i>why</i> a patient is active (e.g., at work vs. during leisure). However, they are highly susceptible to recall bias.</p><p><br></p><p>●       <b>Objective Tracking (e.g., smartwatches and accelerometers):</b> These deliver unbiased, continuous data that can actively boost patient motivation. On the downside, wearing a device 24/7 can be intrusive, and the data lacks behavioral context.</p><p><br></p><p><b>Target Population and Study Status</b></p><p><br></p><p>The research focuses specifically on <b>breast cancer survivors</b>, a group where roughly 45% to 50% experience persistent pain after completing treatment. By directly comparing their questionnaire answers with accelerometer data, the study aims to map out exactly where measurement discrepancies occur.</p><p><br></p><p>This project efficiently "piggybacks" on the baseline data of a larger randomized controlled trial, the <b>PEAK trial</b>. Recruitment for Sophie's sub-study concludes at the end of this year, with data analysis slated for next year. Future steps will also examine how pain variables—like pain intensity and disability—directly influence a patient's tendency to over- or underestimate their actual physical activity.</p><p><br></p><p><b>Clinical Implications: A Combined Approach</b></p><p>Sophie emphasizes that the goal is not