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Updated: Jul 5, 2026

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb
Published on: August 30, 2016
Sit-to-stand test: Performance and determinants across the age-span.
Richard W Bohannon1, Deborah J Bubela1, Susan R Magasi2
1Program in Physical Therapy, Department of Kinesiology, University of Connecticut, Storrs, CT, USA.
The five-repetition sit-to-stand test (FRSTST) reflects lower limb strength in adults. Performance is influenced by knee extension strength and age, but not gender.
Area of Science:
- Gerontology
- Kinesiology
- Biomedical Engineering
Background:
- The sit-to-stand (STS) test is commonly used to assess lower limb strength in older adults.
- Concerns exist regarding the validity of the STS test for measuring lower limb strength.
Purpose of the Study:
- Describe five-repetition STS test (FRSTST) performance in adolescents and adults.
- Determine the relationship between isometric knee extension strength, age, gender, weight, and stature with FRSTST performance.
Main Methods:
- 111 female and 70 male participants (14-85 years) completed the FRSTST using a standard armless chair.
- Isometric knee extension force and torque were measured using hand-held and Biodex dynamometers, respectively.
Main Results:
- Mean FRSTST times ranged from 6.0 sec (20-29 years) to 10.8 sec (80-85 years).
- Knee extension strength, age, and gender significantly correlated with FRSTST times.
- Knee extension strength and age were the most significant predictors of FRSTST performance.
Conclusions:
- FRSTST time is a valid indicator of lower limb strength.
- Performance on the FRSTST should be interpreted considering age and other influencing factors.
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