Dataset Information

Reliability, Validity, and Minimal Detectable Change of Four-Step Stair Climb Power Test in Community-Dwelling Older Adults.

ABSTRACT: Stair climb power is an important clinical measure of lower-extremity power. The stair climb power test (SCPT) was validated by requiring individuals to climb a full flight of stairs. A 4-step SCPT (4SCPT) would be more clinically feasible and easier to perform, yet its reliability and validity are unknown.To evaluate reliability, validity, and minimal detectable change of 4SCPT among community-dwelling older adults.This study is a cross-sectional analysis of baseline data from a clinical trial.Fifty older adults ?65 years of age, at risk for mobility decline, consented to participate in this ancillary study. Test-retest reliability was derived from 2 measurements within each participant measured by a single assessor. Pearson correlation analyses among leg power measures (4SCPT, SCPT, single leg press power at 40% and 70% of the 1-repetition maximum [SLP40, SLP70]) were performed. Separate multivariate linear regressions were conducted evaluating the associations between each leg power measure and 2 mobility outcomes, the Short Physical Performance Battery (SPPB) and habitual gait speed (HGS). Minimal detectable change was based on a 90% confidence interval (MDC 90 ).The 4SCPT had excellent test-retest reliability (ICC(2,1) = 0.951), and strong correlation with SCPT, SLP40, and SLP70 ( r = 0.85-0.96). The 4SCPT explained a greater amount of variance in the SPPB (R 2 = 0.31) than other leg power measurements (R 2 = 0.23-0.25). The 4SCPT (R 2 = 0.41) and SCPT (R 2 = 0.42) described equivalent amounts of variance in HGS, and greater than that with SLP40 (R 2 = 0.28) and SLP70 (R 2 = 0.30). The MDC 90 for 4SCPT was 44.0 watts.This was a cross-sectional analysis within a small, nonrepresentative sample. Interrater reliability was not evaluated.The 4SCPT shows scientific promise as a valid and reliable leg power measurement among community-dwelling older adults.

SUBMITTER: Ni M

PROVIDER: S-EPMC6257032 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature

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Reliability, Validity, and Minimal Detectable Change of Four-Step Stair Climb Power Test in Community-Dwelling Older Adults.

Ni Meng M Brown Lorna G LG Lawler Danielle D Bean Jonathan F JF

Physical therapy 20170701 7

<h4>Background</h4>Stair climb power is an important clinical measure of lower-extremity power. The stair climb power test (SCPT) was validated by requiring individuals to climb a full flight of stairs. A 4-step SCPT (4SCPT) would be more clinically feasible and easier to perform, yet its reliability and validity are unknown.<h4>Objective</h4>To evaluate reliability, validity, and minimal detectable change of 4SCPT among community-dwelling older adults.<h4>Design</h4>This study is a cross-sectio ...[more]

PMID: 28444350

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Dataset Information

Reliability, Validity, and Minimal Detectable Change of Four-Step Stair Climb Power Test in Community-Dwelling Older Adults.

Publications

Reliability, Validity, and Minimal Detectable Change of Four-Step Stair Climb Power Test in Community-Dwelling Older Adults.

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