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Aquatic therapy for children with duchenne muscular dystrophy: A pilot feasibility randomised controlled trial and mixed-methods process evaluation

Lookup NU author(s): Dr Michelle Eagle

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This is the final published version of an article that has been published in its final definitive form by NIHR Journals Library, 2017.

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Abstract

© Queen’s Printer and Controller of HMSO 2017. Background: Duchenne muscular dystrophy (DMD) is a rare disease that causes the progressive loss of motor abilities such as walking. Standard treatment includes physiotherapy. No trial has evaluated whether or not adding aquatic therapy (AT) to land-based therapy (LBT) exercises helps to keep muscles strong and children independent. Objectives: To assess the feasibility of recruiting boys with DMD to a randomised trial evaluating AT (primary objective) and to collect data from them; to assess how, and how well, the intervention and trial procedures work. Design: Parallel-group, single-blind, randomised pilot trial with nested qualitative research. Setting: Six paediatric neuromuscular units. Participants: Children with DMD aged 7–16 years, established on corticosteroids, with a North Star Ambulatory Assessment (NSAA) score of 8–34 and able to complete a 10-m walk without aids/assistance. Exclusions: > 20% variation between baseline screens 4 weeks apart and contraindications. Interventions: Participants were allocated on a 1 : 1 ratio to (1) optimised, manualised LBT (prescribed by specialist neuromuscular physiotherapists) or (2) the same plus manualised AT (30 minutes, twice weekly for 6 months: active assisted and/or passive stretching regime; simulated or real functional activities; submaximal exercise). Semistructured interviews with participants, parents (n = 8) and professionals (n = 8) were analysed using Framework analysis. An independent rater reviewed patient records to determine the extent to which treatment was optimised. A cost-impact analysis was performed. Quantitative and qualitative data were mixed using a triangulation exercise. Main outcome measures: Feasibility of recruiting 40 participants in 6 months, participant and therapist views on the acceptability of the intervention and research protocols, clinical outcomes including NSAA, independent assessment of treatment optimisation and intervention costs. Results: Over 6 months, 348 children were screened – most lived too far from centres or were enrolled in other trials. Twelve (30% of target) were randomised to AT (n = 8) or control (n = 4). People in the AT (n = 8) and control (n = 2: attrition because of parental report) arms contributed outcome data. The mean change in NSAA score at 6 months was –5.5 [standard deviation (SD) 7.8] for LBT and –2.8 (SD 4.1) in the AT arm. One boy suffered pain and fatigue after AT, which resolved the same day. Physiotherapists and parents valued AT and believed that it should be delivered in community settings. The independent rater considered AT optimised for three out of eight children, with other children given programmes that were too extensive and insufficiently focused. The estimated NHS costs of 6-month service were between £1970 and £2734 per patient. Limitations: The focus on delivery in hospitals limits generalisability. Conclusions: Neither a full-scale frequentist randomised controlled trial (RCT) recruiting in the UK alone nor a twice-weekly open-ended AT course delivered at tertiary centres is feasible. Further intervention development research is needed to identify how community-based pools can be accessed, and how families can link with each other and community physiotherapists to access tailored AT programmes guided by highly specialised physiotherapists. Bayesian RCTs may be feasible; otherwise, time series designs are recommended.


Publication metadata

Author(s): Hind D, Parkin J, Whitworth V, Rex S, Young T, Hampson L, Sheehan J, Maguire C, Cantrill H, Scott E, Epps H, Main M, Geary M, McMurchie H, Pallant L, Woods D, Freeman J, Lee E, Eagle M, Willis T, Muntoni F, Baxter P

Publication type: Article

Publication status: Published

Journal: Health Technology Assessment

Year: 2017

Volume: 21

Issue: 27

Print publication date: 01/05/2017

Acceptance date: 02/04/2016

Date deposited: 15/09/2017

ISSN (print): 1366-5278

ISSN (electronic): 2046-4924

Publisher: NIHR Journals Library

URL: https://doi.org/10.3310/hta21270

DOI: 10.3310/hta21270


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