Instrumented and standard measures of physical performance in adults with chronic kidney disease

Laura M. Johnstone, Baback Roshanravan, Sean D. Rundell, Bryan Kestenbaum, Sarah Fay Baker, Donna L. Berry, Ellen McGough

Research output: Contribution to journalArticlepeer-review


Background: Chronic kidney disease (CKD) is a common pathology encountered by acute care physical therapists. CKD is associated with reduced physical function and fall risk. The purpose of this study was to (1) examine the test-retest reliability of standard and instrumented physical performance measures and (2) describe the relationship between subjective fall risk and objective physical performance in people with CKD. Methods: Twenty-one adults with CKD completed a battery of standard and instrumented physical performance measures 1 week apart. Standard measures were the Short Physical Performance Battery (SPPB), gait speed, 5 times sit-to-stand (FSTS), 2-minute walk test (2MWT), and quadriceps (QS) and grip (GS) strength dynamometry. Instrumented measures included parameters of gait, sit-stand, and postural sway. Intraclass correlation coefficients (ICC) assessed test-retest reliability, and Pearson correlations (adjusted for age) assessed the relationships between the Fall Risk Questionnaire (FRQ) and standard physical performance. Results: Excellent to moderate test-retest reliability was demonstrated in the standard and instrumented physical performance measures. A subset of standard measures was significantly associated with the FRQ score. Conclusions: This study supports the clinical reliability of a battery of standard physical performance measures and a subset of instrumented parameters for use in adults with CKD. The FRQ may be useful for screening fall risk considering its relationship to objective physical performance.

Original languageEnglish (US)
Article number0179
JournalJournal of Acute Care Physical Therapy
StateAccepted/In press - 2021

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation
  • Critical Care and Intensive Care Medicine


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