Predicting Post-Stroke Gait and Balance Function with Simple Neuromotor Measures.

Area of Science:

• Neurology
• Rehabilitation Science
• Biomedical Engineering

Background:

• Stroke causes permanent neural damage, leading to neuromotor impairments like reduced strength and coordination.
• These impairments result in functional deficits such as slower gait, decreased endurance, and poor balance, contributing to long-term disability.
• Understanding the link between neuromotor deficits and functional loss is crucial for effective stroke rehabilitation.

Purpose of the Study:

• To investigate the relationship between upper extremity neuromotor capacities and functional mobility/balance in chronic stroke survivors.
• To identify specific neuromotor predictors of mobility and balance deficits post-stroke.
• To explore the utility of the ReacStick device for assessing these relationships.

Main Methods:

• Cross-sectional, case-control study involving 20 chronic stroke survivors and 20 controls.
• Measured upper extremity neuromotor capacities (grip strength, simple reaction time [SRT], reaction accuracy) using the novel ReacStick.
• Assessed mobility (gait speed, 6-minute walk) and balance (timed up-and-go, single leg stance).

Main Results:

• Stroke negatively impacted most neuromotor capacities and all functional measures compared to controls.
• Grip strength symmetry was the primary predictor of all mobility measures.
• SRT symmetry and paretic limb reaction accuracy/SRT predicted balance outcomes.

Conclusions:

• Neuromotor performance, particularly grip strength symmetry and reaction time, significantly predicts functional mobility and balance after stroke.
• These findings provide foundational evidence for the neuromotor-functional relationship in stroke recovery.
• The ReacStick offers a potentially accessible clinical tool for measuring post-stroke mobility and balance.