Reliability and Minimal Detectable Change Values for Performance-Based Measures of Physical Functioning in the Canadian Longitudinal Study on Aging

Beauchamp, Marla K.; Qin, Hao; Kuspinar, Ayse; D’Amore, Cassandra; Scime, Giulia; Mayhew, Alexandra; Bassim, Carol W.; Wolfson, Christina; Kirkland, Susan; Griffith, Lauren; Raina, Parminder

doi:10.1093/gerona/glab175

Cited by 26 publications

(9 citation statements)

References 41 publications

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“…Results support the observation that subsequent studies of measurement instruments typically reveal lower performance than the original reports [40]. Likewise, in the Canadian Longitudinal Study on Aging (CLSA), the relative reliability for grip strength was excellent (intraclass correlation coefficient -ICC = 0.95); the TUG and single-leg stance tests had good reliability (ICC = 0.80 or 0.78-0.82, respectively); gait speed and the chair-rise test had moderate reliability (ICC = 0.64 for both) [41].…”

Section: Discussionmentioning

confidence: 99%

A Proposed Method of Converting Gait Speed and TUG Test in Older Subjects

Kostka

Sosowska

Guligowska

et al. 2022

IJERPH

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Sarcopenia is one of the most important health problems in advanced age. In 2019, the European Working Group of Sarcopenia in Older People (EWGSOP) updated the operational diagnostic criteria for identification of people with sarcopenia (EWGSOP2). Among the two proposed low performance measures of sarcopenia are gait speed and the Timed Up and Go (TUG) test. Usage of any of those tools requires recalculation for the second one for eventual comparisons. The simple linear regression has been used for such comparisons in several previous studies, but the appropriateness of such an approach has not been verified. The aim of this study is to find the most appropriate model describing the relationship between these two popular measures of physical function. The study was performed in 450 consecutive outpatients of the Geriatric Clinic of the Medical University of Lodz, Poland, aged 70 to 92 years who volunteered to participate in the study. The TUG test and gait speed at 4 m to assess physical function were used. Different alternative models were compared to obtain the highest R-squared values. A Reciprocal-Y model (R-squared = 71.9%) showed the highest performance, followed by a Logarithmic-Y square root-X model (R-squared = 69.3%) and a Reciprocal-Y square root-X model (R-squared = 69.1%). The R-squared for the linear model was 49.5%. For the selected reciprocal model, the correlation coefficient was 0.85 and the equation of the fitted model was: Gait speed (m/s) = 1/(−0.0160767 + 0.101386 × TUG). In conclusion, in independent community-dwelling older adults, the relationship between gait speed and the TUG test in older subjects is nonlinear. The proposed reciprocal model may be useful for recalculations of gait speed or TUG in future studies.

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Section: Discussionmentioning

confidence: 99%

A Proposed Method of Converting Gait Speed and TUG Test in Older Subjects

Kostka

Sosowska

Guligowska

et al. 2022

IJERPH

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show abstract

“…The ICCs between the first and the second administrations of the TUG ranged from 0.50 to 0.56 [ 21 ]. In the second study, the ICCs of relative reliability varied from 0.64 for the chair rise test and gait speed, to 0.78–0.82 for the single-leg stance test and TUG, and 0.95 for handgrip strength [ 22 ].…”

Section: Discussionmentioning

confidence: 99%

Feasibility and Reliability of Quadriceps Muscle Power and Optimal Movement Velocity Measurements in Different Populations of Subjects

Kostka,

Kostka

2024

Biology

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This study aimed to assess the feasibility and reliability of quadriceps maximal short-term power (Pmax) and corresponding optimal movement velocity (υopt—velocity at which the power reaches a maximum value) measurements in different populations of subjects. Five groups of subjects, fifty participants in each group, took part in the study: students; patients of the cardiac rehabilitation program; patients after stroke; older adults; and subjects of different ages who performed repetitive measurements with two different bicycles. The correlations calculated for the pairs of scores ranged from 0.93 to 0.99 for Pmax and from 0.86 to 0.96 for υopt (all with p < 0.001). Intraclass Correlations Coefficients (ICCs) varied from 0.93 to 0.98 for Pmax and from 0.86 to 0.95 for υopt. The standard error of measurement (SEM) varied from 16.9 to 21.4 W for Pmax and from 2.91 to 5.54 rotations(rot)/min for υopt. The coefficients of variation (CVs or SEM%) for Pmax and υopt in the stroke group were 10.6% and 11.4%, respectively; all other CVs were clearly lower than 10%. The minimal detectable change (MDC) varied from 46.6 to 59.3 W for Pmax and from 8.07 to 15.4 rot/min for υopt. MDC% varied from 9.53% to 29.3% for Pmax and from 8.19% to 31.7% for υopt, and was the highest in the stroke group. Therefore, the precision of measurements of Pmax and υopt was confirmed by very good indices of absolute and relative reliability. The proposed methodology is precise, safe, not time-consuming and feasible in older subjects and those with diseases.

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“…These results are similar to what has been previously reported in the literature, with MDC 95 for grip strength around 6 kg. 23 Table 1. Demographic data for the participants included.…”

Section: Discussionmentioning

confidence: 99%

Reliability and validity of the K-force grip dynamometer in healthy subjects: do we need to assess it three times?

Magni

Olds²,

McLaine

2023

Hand Therapy

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Introduction Digital dynamometers to assess grip strength are becoming more common in research and clinical settings. The aim of the study was to assess validity and reliability of the K-force dynamometer compared to the Jamar dynamometer. We also aimed to assess differences over the course of three measurements. Methods Twenty-seven healthy participants were included. Three trials with the K-force and Jamar dynamometers were completed. Testing order was randomised. Intraclass correlation coefficients (ICCs) with absolute agreement assessed reliability and validity. Standard error of the measurement (SEM) and minimal detectable change (MDC95) were calculated. Concurrent validity was assessed using Pearson’s correlations and ICCs. Differences between the three repetitions were assessed using one-way repeated measures ANOVAs. Results Both the K-force and the Jamar presented excellent intra-rater reliability with ICCs ranging from 0.96 to 0.97. The SEM ranged from 1.7 to 2 kg and the MDC from 4.7 to 5.7 kg for both dynamometers. The concurrent validity of the K-force was high ( r ≥ 0.89). However, the K-force underestimated the grip strength by 4.5–8.5 kg. There was no change in grip strength with either dynamometer over the course of three trials. Conclusions: The K-force is reliable, but it underestimates grip strength by 4.5–8.5 kg compared to the Jamar dynamometer. K-force can be used to monitor progress over time but cannot be used to compare results against normative data. The use of a single measurement when assessing grip strength is sufficient when assessing healthy subjects.

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Reliability and Minimal Detectable Change Values for Performance-Based Measures of Physical Functioning in the Canadian Longitudinal Study on Aging

Cited by 26 publications

References 41 publications

A Proposed Method of Converting Gait Speed and TUG Test in Older Subjects

A Proposed Method of Converting Gait Speed and TUG Test in Older Subjects

Feasibility and Reliability of Quadriceps Muscle Power and Optimal Movement Velocity Measurements in Different Populations of Subjects

Reliability and validity of the K-force grip dynamometer in healthy subjects: do we need to assess it three times?

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