The goal of this clinical trial is to determine how strengthening the hamstring muscles affects the knee joint in people living with hypermobility spectrum disorders (HSD) and hypermobile Ehlers-Danlos syndrome (hEDS). The main questions it aims to answer are: * Does hamstring strengthening reduce the looseness of the knee joint in HSD/hEDS? * Does hamstring strengthening improve clinical outcomes like pain in people living with HSD/hEDS? Participants will: * Attend two exercise classes per week for 12 weeks. * Visit the laboratory every 4-6 weeks for testing.
Age range
18 Years – 55 Years
Sex
FEMALE
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The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Knee Joint Laxity
Timeframe: Measured at all 6 outcome assessments (baseline, 4, 8, 12, 18, and 24 weeks).