Surveying the Dietary Intake, Physical Activity Patterns, Muscle Strength and Morphology of Adults With Inclusion Body Myositis

The goal of this observational study is to understand how diet may influence the disease characteristics of inclusion body myositis (IBM). Research findings will help determine whether dietary factors could play a role in managing IBM. The study aims to answer the question: Does diet affect the muscle health and functional ability of people living with IBM? Researchers will compare adults with IBM to healthy volunteers aged 40 years and older. This comparison will help to identify which findings are related to normal ageing and which are specific to IBM. Participants will: Attend an initial screening visit at the Manchester Metropolitan University Institute of Sport to confirm eligibility and explain study procedures. Complete four weeks of home-based monitoring, including dietary records, physical activity monitoring, and questionnaires about lifestyle and symptoms. Attend a second university visit for assessments of body composition, metabolism, and muscle function.