Autonomic Modulation in Duchenne Muscular Dystrophy During a Computer Task: A Prospective Transversal Controlled...

Area of Science:

• Neurology
• Cardiology
• Biomedical Engineering

Background:

• Duchenne Muscular Dystrophy (DMD) causes functional and autonomic challenges.
• Assistive technology is vital for enhancing functional abilities in individuals with DMD.
• Understanding cardiac autonomic responses is crucial for managing DMD-related complications.

Purpose of the Study:

• To investigate acute cardiac autonomic responses using Heart Rate Variability (HRV) in subjects with DMD during computer tasks.
• To apply non-linear dynamics techniques for HRV analysis in DMD patients.
• To compare autonomic responses between DMD subjects and healthy controls during rest and computer-based tasks.

Main Methods:

• Heart Rate Variability (HRV) was measured using a Polar RS800CX device.
• HRV data was analyzed using Chaotic Global Techniques (CGT).
• Forty-five male subjects with DMD and 45 age-matched healthy controls (Typical Development - TD) were assessed at rest and during a computer maze task.

Main Results:

• Both TD and DMD groups showed significantly reduced HRV during the computer maze task.
• DMD subjects exhibited lower HRV at rest and during the computer task compared to TD subjects.
• A decrease in HRV was observed in both groups when performing the computer task, suggesting ANS adaptation.

Conclusions:

• Subjects with DMD demonstrate impaired HRV, indicating autonomic dysfunction.
• Despite impaired HRV, the autonomic nervous system (ANS) shows adaptive responses during computer tasks in DMD individuals.
• Identifying autonomic impairment is critical for improving social inclusion, participation, and independence through computer-based activities in the DMD community.