Measuring physical capacity and performance in older people

Area of Science:

• Gerontology
• Rehabilitation Medicine
• Biomedical Engineering

Background:

• Distinguishing between capacity and performance is vital for effective healthcare of older adults.
• Expert consensus identifies mobility, balance, strength, and dexterity as core capacity domains.
• Current measures often lack the precision needed for individual change tracking.

Purpose of the Study:

• To clarify the distinctions between capacity and performance in older individuals.
• To review validated measures for assessing physical capacity and performance.
• To discuss limitations and future directions for measurement in clinical practice.

Main Methods:

• Review of expert consensus projects on capacity measurement.
• Identification and evaluation of psychometrically sound instruments for capacity assessment.
• Analysis of performance measures focusing on Activities of Daily Living in usual environments.

Main Results:

• Short Physical Performance Battery, hand grip strength, mini-BEST, and 9-hole pegboard test are recommended for capacity evaluation.
• Measures for tracking individual change and informing clinical decisions require enhanced precision.
• Performance measures typically assess Activities of Daily Living in real-world settings.

Conclusions:

• Capacity and performance are distinct concepts crucial for geriatric care.
• Validated instruments exist for capacity assessment, but precision for individual change tracking is limited.
• Future developments should focus on enhancing the precision and applicability of these measures in healthcare settings.