Test-Retest Reliability and Minimal Detectable Change Scores for Sit-to-Stand-to-Sit Tests, the Six-Minute Walk Test, the One-Leg Heel-Rise Test, and Handgrip Strength in People Undergoing Hemodialysis

Determining the relative and absolute reliability of outcomes of physical performance tests for people undergoing hemodialysis is necessary to discriminate between the true effects of exercise interventions and the inherent variability of this cohort. The aims of this study were to assess the relati...

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Veröffentlicht in:Physical therapy 2011-08, Vol.91 (8), p.1244-1252
Hauptverfasser: Eva Segura-Ortí, Francisco José Martínez-Olmos
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description Determining the relative and absolute reliability of outcomes of physical performance tests for people undergoing hemodialysis is necessary to discriminate between the true effects of exercise interventions and the inherent variability of this cohort. The aims of this study were to assess the relative reliability of sit-to-stand-to-sit tests (the STS-10, which measures the time [in seconds] required to complete 10 full stands from a sitting position, and the STS-60, which measures the number of repetitions achieved in 60 seconds), the Six-Minute Walk Test (6MWT), the one-leg heel-rise test, and the handgrip strength test and to calculate minimal detectable change (MDC) scores in people undergoing hemodialysis. This study was a prospective, nonexperimental investigation. Thirty-nine people undergoing hemodialysis at 2 clinics in Spain were contacted. Study participants performed the STS-10 (n=37), the STS-60 (n=37), and the 6MWT (n=36). At one of the settings, the participants also performed the one-leg heel-rise test (n=21) and the handgrip strength test (n=12) on both the right and the left sides. Participants attended 2 testing sessions 1 to 2 weeks apart. High intraclass correlation coefficients (≥.88) were found for all tests, suggesting good relative reliability. The MDC scores at 90% confidence intervals were as follows: 8.4 seconds for the STS-10, 4 repetitions for the STS-60, 66.3 m for the 6MWT, 3.4 kg for handgrip strength (force-generating capacity), 3.7 repetitions for the one-leg heel-rise test with the right leg, and 5.2 repetitions for the one-leg heel-rise test with the left leg. Limitations A limited sample of patients was used in this study. The STS-16, STS-60, 6MWT, one-leg heel rise test, and handgrip strength test are reliable outcome measures. The MDC scores at 90% confidence intervals for these tests will help to determine whether a change is due to error or to an intervention.
doi_str_mv 10.2522/ptj.20100141
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The aims of this study were to assess the relative reliability of sit-to-stand-to-sit tests (the STS-10, which measures the time [in seconds] required to complete 10 full stands from a sitting position, and the STS-60, which measures the number of repetitions achieved in 60 seconds), the Six-Minute Walk Test (6MWT), the one-leg heel-rise test, and the handgrip strength test and to calculate minimal detectable change (MDC) scores in people undergoing hemodialysis. This study was a prospective, nonexperimental investigation. Thirty-nine people undergoing hemodialysis at 2 clinics in Spain were contacted. Study participants performed the STS-10 (n=37), the STS-60 (n=37), and the 6MWT (n=36). At one of the settings, the participants also performed the one-leg heel-rise test (n=21) and the handgrip strength test (n=12) on both the right and the left sides. Participants attended 2 testing sessions 1 to 2 weeks apart. 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source Oxford University Press Journals All Titles (1996-Current); MEDLINE; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Alma/SFX Local Collection
subjects Clinical medicine
Comorbidity
Disability Evaluation
Exercise therapy
Family medical history
Female
Hand Strength - physiology
Hemodialysis
Humans
Male
Methods
Middle Aged
Motor ability
Older people
Patient outcomes
Physical therapy
Prospective Studies
Renal Dialysis
Reproducibility of Results
Statistics, Nonparametric
Walking - physiology
title Test-Retest Reliability and Minimal Detectable Change Scores for Sit-to-Stand-to-Sit Tests, the Six-Minute Walk Test, the One-Leg Heel-Rise Test, and Handgrip Strength in People Undergoing Hemodialysis
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