Validity of the Postural Control and Balance for Stroke test

Area of Science:

• Neurology
• Rehabilitation Medicine
• Biomedical Engineering

Background:

• Stroke significantly impacts motor control and balance, affecting functional independence.
• Accurate assessment tools are crucial for monitoring recovery and guiding interventions post-stroke.

Purpose of the Study:

• To validate the Postural Control and Balance for Stroke (PCBS) test.
• To assess its construct and predictive validity, and sensitivity to change over 90 days.
• To evaluate its ability to predict functional status and fall risk.

Main Methods:

• The PCBS test was administered to 40 stroke patients at 7 and 90 days post-stroke.
• Scores were correlated with the Barthel Index (BI) and neuropsychological domains.
• Sensitivity was assessed by comparing changes and discriminating between stroke patients and 35 healthy controls.

Main Results:

• Moderate correlations were found between PCBS and BI scores (r = 0.56-0.79).
• Postural change scores predicted functional capacity (p < 0.002), and standing balance predicted falls (p < 0.007).
• The PCBS test demonstrated sensitivity to change and effectively discriminated between stroke patients and healthy individuals.

Conclusions:

• The PCBS test exhibits strong construct validity and predictive accuracy for functional capacity and safe mobility.
• It is a sensitive measure of balance control changes following stroke.
• The PCBS test is a valuable tool for assessing stroke recovery and guiding rehabilitation efforts.