Voice therapy for Parkinson's disease via smartphone videoconference in Malaysia: A preliminary study

Intensive voice therapy is one of the best evidence-based treatments to improve speech and voice difficulties to individuals with Parkinson's disease (PD). However, accessibility to intensive voice therapy is highly challenging in Malaysia due to the lack of voice specialised speech-language therapists. This study examined the feasibility of using smartphone videoconference to deliver intensive voice therapy to individuals with PD in Malaysia.

Intensive voice therapy was delivered to 11 adults with PD using a smartphone videoconference method via WhatsApp Messenger freeware. The therapy consisted of 12 sessions over four weeks and focused on increasing vocal loudness. Outcomes were assessed using objective, perceptual and quality-of-life measures pre and post treatment. Participant satisfaction with the telerehabilitation method was obtained via the Smartphone-Based Therapy Satisfaction Questionnaire.

Significant gains were reported for sound pressure level in sustained vowels and monologue. Perceptual ratings showed significant improvements in overall mean severity and loudness after treatment. Mean scores of speech intelligibility and Voice Handicap Index-10 were significantly better post treatment. Overall, participants were highly satisfied with the smartphone videoconference method.

Present results suggest that the smartphone videoconference method is feasible to deliver intensive voice therapy to individuals with PD to gain better speech and voice functions. Future studies need to address the standardisation of the system protocol to optimise this novel service delivery method in Malaysia.