Enhancing Cough Motor Learning in Parkinson's Disease Through Variable Practice During Skill Training.

Area of Science:

• Neurology
• Respiratory Medicine
• Motor Rehabilitation

Background:

• Practicing varied targets during motor skill re-learning enhances long-term motor learning outcomes.
• Cough skill training (CST) is effective for improving cough strength.
• Previous CST studies utilized a single practice target.

Purpose of the Study:

• To investigate the effects of variable practice within CST on motor performance and learning.
• To assess respiratory system adaptations following variable practice CST.
• To evaluate the impact on motor performance, motor learning, and respiratory adaptations.

Main Methods:

• Prospective, single-group design with three visits.
• Twenty individuals with Parkinson's disease (PD), dysphagia, and dystussia participated.
• Two CST sessions with three randomized targets were administered, with assessments before and after, and 1-month follow-up.

Main Results:

• Peak expiratory flow rate improved significantly for voluntary single and sequential coughs, with sustained improvements at 1 month.
• A modest improvement in the ability to clear the upper airway was observed.
• Participants adjusted lung volume based on targets, with decreased lung volume during reflex cough post-CST.

Conclusions:

• Variable practice CST led to improvements in motor learning aspects for individuals with PD.
• Increased lung volume may not be a direct mechanism for enhancing voluntary cough strength in this paradigm.
• Further research with larger cohorts is warranted to explore the benefits of this CST approach.