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- Title
Reliability and validity of the five-repetition sit-to-stand test in adult kidney transplant recipients.
- Authors
Huang, Katherin S; O'Connor, Ellen; Tuffnell, Rachel; Lindup, Herolin; Macdougall, Iain C; Greenwood, Sharlene A
- Abstract
Background/Aims: To investigate the reliability and validity of the five-repetition sit-to-stand test (FRSTST) to assess lower-limb muscle strength and physical function in adult kidney transplant recipients. Methods: A cross-sectional, observational study was conducted in a secondary care centre. A convenience sample of 56 adult kidney transplant recipients were recruited following a 6-week post-transplantation recovery period. The participants were within their first 18 months of kidney transplantation. The measurements included FRSTST times, myometer measurements of isometric quadriceps muscle strength, 60-second sit-to-stand test (STS60) scores, and Duke Activity Status Index (DASI) scores. Findings: Inter- and intratester reliability of the FRSTST were excellent (intraclass correlation coefficients 0.997 and 0.970, respectively). The standard error of measurement and the minimal detectable change at 95% confidence level were 0.9 and 2.5 seconds, respectively. The best FRSTST scores by the two testers had non-significant, weak correlations with the isometric quadriceps muscle force (Spearman's rho, <italic>rs</italic>=-0.04, <italic>p</italic>=0.76), and quadriceps muscle torque (<italic>rs</italic>=0.04, <italic>p</italic>=0.76). The FRSTST correlated significantly with the STS60 (<italic>rs</italic>=-0.90, p=0.001) and DASI scores (<italic>rs</italic>=-0.49, p=0.001). Conclusions: The FRSTST can be considered to be a reliable test of physical function for adult kidney transplant recipients, but may not be used as a surrogate measure of lower limb muscle strength in this population.
- Subjects
QUADRICEPS muscle physiology; CONFIDENCE intervals; KIDNEY transplantation; RESEARCH methodology; MUSCLE strength; SCIENTIFIC observation; PROBABILITY theory; RESEARCH evaluation; STATISTICAL sampling; STATISTICS; T-test (Statistics); STATISTICAL power analysis; DATA analysis; BODY movement; INTER-observer reliability; CROSS-sectional method; RESEARCH methodology evaluation; DATA analysis software; FUNCTIONAL assessment; DESCRIPTIVE statistics; SECONDARY care (Medicine); INTRACLASS correlation
- Publication
International Journal of Therapy & Rehabilitation, 2018, Vol 25, Issue 4, p158
- ISSN
1741-1645
- Publication type
Article
- DOI
10.12968/ijtr.2018.25.4.158