Motor assessment using the NIH Toolbox.

Area of Science:

• Neurology
• Human Physiology
• Biomedical Engineering

Background:

• Motor function is crucial for daily life and reflects overall health.
• It integrates multiple physiological systems, impacting quality of life.
• Motor function is a key domain in the NIH Toolbox for assessing neurological and behavioral function.

Purpose of the Study:

• To develop and validate motor function measures for the NIH Toolbox.
• To identify key subdomains and candidate assessments for motor function.
• To ensure measures are feasible, reliable, and valid across a wide age range (3-85 years).

Main Methods:

• A three-stage developmental process: subdomain identification, feasibility pretesting, and criterion validation.
• Inclusion of 340 healthy participants aged 3 to 85 years.
• Literature review and expert input guided measure selection.

Main Results:

• Five motor subdomains were identified: dexterity, strength, balance, locomotion, and endurance.
• Validated, low-cost, and portable measures were recommended for each subdomain.
• Specific measures include the 9-hole peg test, grip dynamometry, balance tests, and walk tests.

Conclusions:

• The NIH Toolbox now offers a comprehensive motor battery.
• These measures provide reliable and valid assessments of motor function across the lifespan.
• The selected tools are practical for widespread use in assessing neurological and behavioral health.