Progressive resistance training in patients with hip dysplasia: A feasibility study
Louise Mortensen, Jeppe Schultz, Anton Elsner, Stig S. Jakobsen, Kjeld Søballe, Julie S. Jacobsen, Signe Kierkegaard, Ulrik Dalgas, Inger Mechlenburg
Department of Orthopaedic Surgery, Aarhus University Hospital, 8000 Aarhus C, Denmark. E-mail: firstname.lastname@example.org
Objectives: To examine whether progressive resistance training is feasible in patients with symptomatic hip dysplasia scheduled for periacetabular osteotomy. A secondary objective was to investigate patient-reported outcomes, functional performance and hip muscle strength.
Design: Feasibility study.
Patients and methods: Seventeen patients (median age 28 years, range 22–40 years) performed 8 weeks (20 sessions) of supervised sessions of progressive resistance training. Training-adherence, number of dropouts and adverse events, and visual analogue scale scores on pain were registered. Patients completed the Hip and Groin Outcome Score, performed 2 hop-tests, and hip peak torque was assessed by isokinetic dynamometry.
Results: Training-adherence was 90.3±9%. Few and minor adverse events were observed, one patient dropped out and acceptable pain levels were reported during the intervention. Scores on 4 out of 6 subscales on patient-reported outcome improved (p < 0.05), as did standing distance jump (12.2%, 95% confidence interval (CI) [1.3, 23.0]), countermovement jump (25.1%, 95% CI [1.3, 48.8]). Isokinetic concentric hip flexion peak torque showed significant improvements (16.6%, 95% CI [4.6, 28.6]) on the affected side while isometric hip flexion (10.9%, 95% CI [0.3, 21.6]) improved on the non-affected side.
Conclusion: Supervised progressive resistance training is feasible in patients with hip dysplasia. The intervention may improve pain levels, patient-reported outcomes, functional performance and hip flexion muscle strength.
This study examined the feasibility of 8 weeks of progressive resistance training for patients with symptomatic hip dysplasia. Seventeen patients were included, and 16 completed the training intervention (20 sessions over 8 weeks). The study showed that patients with hip dysplasia were able to perform progressive resistance training with a substantial general load progression without increasing pain in the hip. Furthermore, the patients reported increased level of activities of daily living and function of the hip after the intervention. This study provides important knowledge on how patients with HD respond to resistance training.
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