5-repetition sit-to-stand test in subjects with chronic stroke: reliability and validity

Arch Phys Med Rehabil. 2010 Mar;91(3):407-13. doi: 10.1016/j.apmr.2009.10.030.


Objectives: To examine the (1) intrarater, interrater, and test-retest reliability of the 5-repetition sit-to-stand test (5-repetition STS test) scores, (2) correlation of 5-repetition STS test scores with lower-limb muscle strength and balance performance, and (3) cut-off scores among the 3 groups of subjects: the young, the healthy elderly, and subjects with stroke.

Design: Cross-sectional study.

Setting: University-based rehabilitation center.

Participants: A convenience sample of 36 subjects: 12 subjects with chronic stroke, 12 healthy elderly subjects, and 12 young subjects.

Interventions: Not applicable.

Main outcome measures: 5-Repetition STS test time scores; hand-held dynamometer measurements of hip flexors, and knee flexors and extensors; ankle dorsiflexors and plantarflexors muscle strength; Berg Balance Scale (BBS); and limits of stability (LOS) test using dynamic posturography.

Results: Excellent intrarater reliability of intraclass correlation coefficient (ICC) (range, .970-.976), interrater reliability (ICC=.999), and test-retest reliability (ICC range, .989-.999) were found. Five-repetition STS test scores were also found to be significantly associated with the muscle strength of affected and unaffected knee flexors (rho=-.753 to -.830; P<.00556) of the subjects with stroke. No significant associations were found between 5-repetition STS test and BBS and LOS tests in subjects with stroke. Cut-off scores of 12 seconds were found to be discriminatory between healthy elderly and subjects with stroke at a sensitivity of 83% and specificity of 75%.

Conclusions: The 5-repetition STS test is a reliable measurement tool that correlates with knee flexors muscle strength but not balance ability in subjects with stroke.

Publication types

  • Evaluation Study
  • Validation Study

MeSH terms

  • Adult
  • Chronic Disease
  • Cross-Sectional Studies
  • Disability Evaluation*
  • Female
  • Humans
  • Male
  • Middle Aged
  • Muscle Strength Dynamometer
  • Muscle Strength*
  • Postural Balance*
  • Posture
  • ROC Curve
  • Recovery of Function*
  • Reproducibility of Results
  • Stroke / classification*
  • Stroke Rehabilitation*