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Effects of Aquatic Exercise Including Respiratory Muscle Strengthening on the Pulmonary Function in Children with Duchenne Muscular Dystrophy: A Single-Subject Study

  • Journal of the Korean Society of Physical Medicine
  • Abbr : J Korean Soc Phys Med
  • 2025, 20(3), pp.21~30
  • Publisher : The Korean Society of Physical Medicine
  • Research Area : Medicine and Pharmacy > Physical Therapy > Other physical therapy
  • Received : April 3, 2025
  • Accepted : June 1, 2025
  • Published : August 31, 2025

예나연 1 Eun ju LEE 2

1경성대
2경성대학교

Accredited

ABSTRACT

PURPOSE: This study examined the effects of aquatic exercise, incorporating respiratory muscle strengthening, on the pulmonary function of children with Duchenne muscular dystrophy (DMD). METHODS: Three boys with DMD (aged 12–14), all of whom used wheelchairs, participated in a single-subject ABA design. The intervention involved a 40-minute aquatic exercise session once per week for 12 weeks, incorporating respiratory and abdominal strengthening exercises. The pulmonary function, which included the forced vital capacity (FVC), forced expiratory volume in one second (FEV1), maximal voluntary ventilation (MVV), and peak expiratory flow (PEF), was measured at five time points: baseline, weeks four, eight, and 12 of the intervention, and at a four-week follow-up. The data were analyzed using the Friedman test with a significance level of α = .05. RESULTS: Significant improvements in the FVC, FEV1, and MVV were observed after the intervention (p < .05), which were sustained at the follow-up. Although PEF also improved, the change was not statistically significant. CONCLUSION: Aquatic exercise that includes targeted respiratory training may enhance the pulmonary function in children with DMD and serve as a safe, effective intervention to help maintain respiratory capacity in this progressive condition.

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