A new simple performance test focused on agility in elderly people: The Ten Step Test

Area of Science:

• Gerontology
• Kinesiology
• Biomedical Engineering

Background:

• Falls in the elderly are linked to reduced agility, muscle strength, and balance.
• Establishing an agility test can improve fall prediction and enable personalized training programs.

Purpose of the Study:

• To develop and evaluate a novel performance test for assessing agility in older adults.
• To determine the reliability and validity of the new agility test.

Main Methods:

• A cross-sectional study involving 828 community-dwelling adults aged 20-99 years.
• The Ten Step Test (TST) was developed and administered, alongside tests for motor reaction time, knee extensor strength, and single leg standing time.
• Criterion-related and content validity were assessed, and fall prediction error rates were compared with other measures.

Main Results:

• The Ten Step Test (TST) demonstrated excellent interrater reliability (ICC=0.96) and sufficient retest reliability (ICC=0.86).
• TST showed strong correlations with timed supine-to-stand (r=0.68) and motor reaction time (r=0.59), supporting criterion-related validity.
• TST had a lower fall prediction error rate (35.2%) compared to muscle strength (44.4%) and balance (38.7%).

Conclusions:

• The Ten Step Test (TST) is a reliable and valid measure for assessing agility in older adults.
• TST effectively predicts fall risk and indicates that agility decline accelerates after age 50.
• Agility decline follows a distinct pattern compared to age-related changes in leg muscle strength and balance.