Görsel geri bildirim Parkinson hastalığında ekspiratuar kas eğitim çabasını arttırır: randomize bir çaprazlama çalışması.

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BackgroundDisorders of airway protection, including impaired cough and swallowing, are clinically important complications of Parkinson's disease. Expiratory muscle strength training (EMST) is an established non-pharmacological intervention targeting these deficits. The aim of this study was to evaluate the acute effect of visual feedback provided by the SpiroGym mHealth app on expiratory muscle activation during EMST in people with Parkinson's disease.MethodsWe conducted a single-center, randomised, two-period crossover trial in people with Parkinson's disease. Participants performed EMST under two conditions, in randomised order: conventional EMST without visual feedback and EMST with real-time visual feedback provided by the SpiroGym app. Expiratory muscle activation was measured using surface electromyography of the abdominal muscles. The primary outcome was the within-participant difference in mean peak normalised internal oblique activity between conditions. Secondary outcomes included external oblique and rectus abdominis activity, associations with neuropsychiatric symptoms, and participant-reported usability ratings.ResultsTwenty participants were randomised, and 19 completed the study and were included in the final analysis. No study-related adverse events occurred. Visual feedback significantly increased mean peak normalised internal oblique activity compared with no feedback (118.2 ± 36.4% vs. 90.5 ± 23.0% of reference voluntary contraction; p ConclusionsReal-time visual feedback delivered by the SpiroGym app acutely increased and stabilized expiratory muscle activation during EMST in people with Parkinson's disease. Trial registration ClinicalTrials.gov NCT06942533, 1 May 2025.

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