progressive resistance training for adults with external snapping hip

Conditions: External Snapping Hip; Coxa Saltans External

Summary: external snapping hip is characterised by an audible and painful snap during hip movement among physical active people around 15-40 years old. progressive resistance training has been suggested as a new potential treatment path in treating patients with external snapping hip. we conducted a feasibility study and found that patients reported less pain and improved their physical function, quality of life and muscle strength after 12 weeks of progressive resistance training. the overall aim of the project is to compare hip pain in patients with external snapping hip treated with progressive resistance training to a wait-and-see approach, in a randomised controlled trial. this study has the potential to establish a new and specific treatment option for patients with external snapping hip, to be used nationally and internationally.

this trial is an international multicentre randomised controlled assessor-blinded crossover trial, following the consort guidelines. the intervention is a 12-week progressive resistance training programme, and the trial is designed with three follow-up time points. after the baseline test, the patients will be randomised in a 1:1 ratio to either the intervention or the control group using the research electronic data capture (redcap) source hosted at aarhus university. for the patients randomised to the intervention group, the first test will be the baseline test, conducted before the intervention. the second test will be conducted at week 13, and the third test after another 12 weeks of self-guided exercise, at week 25. self-guided exercise is the period after the intervention, where the patients are recommended to continue training on their own. for the patients randomised to the control group, the first test will also be the baseline test, conducted before the waiting period. the second test will be conducted at week 13, and the third test after the 12 weeks of progressive resistance training at week 25. the primary outcome will be the change from baseline to the second follow-up, and the trial will be powered based on this period. the lasting effect of the intervention will be evaluated from baseline to the third follow-up test for the intervention group.

Eligibility criteria:
inclusion criteria: * age 18-40 years * experienced lateral hip joint "snapping" with pain within the last 14 days * able to demonstrate the audible "snapping" or popping sound when the hip joint moves * capable of commuting to the training facility * proficient in reading and understanding danish or english exclusion criteria: * previous surgery on the affected hip * planned surgery on lower extremities within the trial period * neurological, rheumatoid or mental conditions affecting the hip function * planned vacation for more than 14 days within the intervention period * has performed systematic resistance training exercises for the hip muscles more than once a week within the last six months prior to inclusion * pregnancy

Keywords: external snapping hip progressive resistance training coxa saltans external exercise