Test-retest Reliability Of A Computerized Balance Assessment On Static And Dynamic Balance In Older Adults

2011 ◽  
Vol 43 (Suppl 1) ◽  
pp. 711
Author(s):  
Makoto Narita ◽  
Daisuke Koizumi ◽  
Nobuo Takeshima ◽  
Nicole L. Rogers ◽  
Michael E. Rogers
Keyword(s):  
Older Adults ◽  
Dynamic Balance ◽  
Balance Assessment ◽  
Retest Reliability ◽  
Test Retest Reliability

scholarly journals AB0882 RELIABILITY OF THE 3-M BACKWARDS WALK TEST IN PATIENTS WITH REVISION TOTAL KNEE ARTHROPLASTY

2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 1746.2-1746
Author(s):  
B. Unver ◽  
K. Sevik ◽  
V. Karatosun
Keyword(s):  
Total Knee Arthroplasty ◽  
Diagnostic Accuracy ◽  
Knee Arthroplasty ◽  
Fall Risk ◽  
Dynamic Balance ◽  
Fracture Dislocation ◽  
Walk Test ◽  
Retest Reliability ◽  
Total Knee ◽  
Test Retest Reliability

Background:Total knee arthroplasty (TKA) is an effective treatment for patients suffering from end-stage osteoarthritis with 10- to 15-year implant survivorship rates exceeding 90%. Infection, osteolysis due to polyethylene wear, loosening, stiffness and instability may cause to implant failure and revision of the TKA (rTKA). However, up to 20% of patients continue to have postoperative pain, functional limitations and low treatment satisfaction and 24% of patients were not able to walk unaided with no limp or a slight limp after TKA [1].Falls and related traumas can produce “fracture, dislocation, crushing, and other injuries” [2]. Falls often occur due to impaired physical function which includes changes in lower knee joint angle, weakened lower limb muscles, peripheral nerve blockade, deformity of the foot limited balance and gait.Several measures of fall risk have been previously developed however, recent research has demonstrated that backwards walking is more sensitive at identifying changes in mobility and balance compared to forward walking. Backwards walking is necessary to perform such tasks as backing up to a chair, opening up a door or getting out of the way of a sudden obstacle.3-M Backwards Walk Test (3MBWT) is used to evaluate walking skills, fall risk and dynamic balance. The 3MBWT demonstrated similar or better diagnostic accuracy for falls in the past year than the most commonly used measures and found to be reliable in healthy subjects. [3] However, its reliability in rTKA has not been investigated.Objectives:The purposes of this study were to determine the test-retest reliability and the minimal clinically important difference (MCID) of the 3MBWT in patients with rTKAMethods:Twenty-two patients with rTKA, operated on by the same surgeon, were included. For the 3MBWT, a distance of 3 meters was marked with tape and participants were asked to align their heels with the black tape. They were instructed to walk backwards as quickly. Patients performed trials for 3MBWT twice on the same day. Between the trials, patients waited for an hour on sitting position to prevent fatigue.Results:The 3MBWT showed an excellent test-retest reliability. Intraclass correlation coefficient ICC for 3MBWT was 0.97. The standard error of measurement and MCID at the 95% confidence level for 3MBWT were 1,08 and 2,99 respectively.Conclusion:The 3MBWT has an excellent test-retest reliability in patients with rTKA. It is an effective and reliable tool for measuring fall risk, dynamic balance and walking skills. As a clinical test, the 3MBWT is easy to score, has no cost, needs no special equipment and can be applied in a short time as part of the routine medical examination.References:[1]Shan L, Shan B, Suzuki A et al. Intermediate and long-term quality of life after total knee replacement: a systematic review and meta-analysis. JBJS 2015; 97: 156-168.[2]Johnson RL, Duncan CM, Ahn KS et al. Fall-Prevention Strategies and Patient Characteristics That Impact Fall Rates After Total Knee Arthroplasty. Anesthesia & Analgesia 2014; 119: 1113-1118.[3]Carter V, Jain T, James J et al. The 3-m Backwards Walk and Retrospective Falls: Diagnostic Accuracy of a Novel Clinical Measure. J Geriatr Phys Ther 2017.Disclosure of Interests:None declared

scholarly journals Formative Evaluation of Consumer-Grade Activity Monitors Worn by Older Adults: Test-Retest Reliability and Criterion Validity of Step Counts (Preprint)

2019 ◽  
Author(s):  
Stephanie A Maganja ◽  
David C Clarke ◽  
Scott A Lear ◽  
Dawn C Mackey
Keyword(s):  
Older Adults ◽  
Activity Monitor ◽  
Criterion Validity ◽  
Step Count ◽  
Retest Reliability ◽  
Activity Monitors ◽  
Limited Mobility ◽  
Step Counts ◽  
Test Retest Reliability ◽  
Mobility Status

BACKGROUND To assess whether commercial-grade activity monitors are appropriate for measuring step counts in older adults, it is essential to evaluate their measurement properties in this population. OBJECTIVE This study aimed to evaluate test-retest reliability and criterion validity of step counting in older adults with self-reported intact and limited mobility from 6 commercial-grade activity monitors: Fitbit Charge, Fitbit One, Garmin vívofit 2, Jawbone UP2, Misfit Shine, and New-Lifestyles NL-1000. METHODS For test-retest reliability, participants completed two 100-step overground walks at a usual pace while wearing all monitors. We tested the effects of the activity monitor and mobility status on the absolute difference in step count error (%) and computed the standard error of measurement (SEM) between repeat trials. To assess criterion validity, participants completed two 400-meter overground walks at a usual pace while wearing all monitors. The first walk was continuous; the second walk incorporated interruptions to mimic the conditions of daily walking. Criterion step counts were from the researcher tally count. We estimated the effects of the activity monitor, mobility status, and walk interruptions on step count error (%). We also generated Bland-Altman plots and conducted equivalence tests. RESULTS A total of 36 individuals participated (n=20 intact mobility and n=16 limited mobility; 19/36, 53% female) with a mean age of 71.4 (SD 4.7) years and BMI of 29.4 (SD 5.9) kg/m<sup>2</sup>. Considering test-retest reliability, there was an effect of the activity monitor (<i>P</i>&lt;.001). The Fitbit One (1.0%, 95% CI 0.6% to 1.3%), the New-Lifestyles NL-1000 (2.6%, 95% CI 1.3% to 3.9%), and the Garmin vívofit 2 (6.0%, 95 CI 3.2% to 8.8%) had the smallest mean absolute differences in step count errors. The SEM values ranged from 1.0% (Fitbit One) to 23.5% (Jawbone UP2). Regarding criterion validity, all monitors undercounted the steps. Step count error was affected by the activity monitor (<i>P</i>&lt;.001) and walk interruptions (<i>P</i>=.02). Three monitors had small mean step count errors: Misfit Shine (−1.3%, 95% CI −19.5% to 16.8%), Fitbit One (−2.1%, 95% CI −6.1% to 2.0%), and New-Lifestyles NL-1000 (−4.3%, 95 CI −18.9% to 10.3%). Mean step count error was larger during interrupted walking than continuous walking (−5.5% vs −3.6%; <i>P</i>=.02). Bland-Altman plots illustrated nonsystematic bias and small limits of agreement for Fitbit One and Jawbone UP2. Mean step count error lay within an equivalence bound of ±5% for Fitbit One (<i>P</i>&lt;.001) and Misfit Shine (<i>P</i>=.001). CONCLUSIONS Test-retest reliability and criterion validity of step counting varied across 6 consumer-grade activity monitors worn by older adults with self-reported intact and limited mobility. Walk interruptions increased the step count error for all monitors, whereas mobility status did not affect the step count error. The hip-worn Fitbit One was the only monitor with high test-retest reliability and criterion validity.

scholarly journals The development and initial validation of the Chinese Significant Wish Fulfillment Scale

2010 ◽  
Vol 23 (3) ◽  
pp. 442-449
Author(s):  
Amy Y. M. Chow ◽  
Meetim Chow ◽  
Catherine K. P. Wan ◽  
Katherine K. L. Wong ◽  
Rita W. T. Cheung
Keyword(s):  
Older Adults ◽  
Factor Analysis ◽  
Convergent Validity ◽  
Internal Reliability ◽  
Retest Reliability ◽  
Confirmatory Factor ◽  
Wish Fulfillment ◽  
Test Retest Reliability ◽  
Development And Validation ◽  
Depth Interviews

ABSTRACTBackground: This paper reports the development and validation of the Chinese Significant Wish Fulfillment Scale (CSWFS), a new multidimensional scale for assessing the perceived importance and level of fulfillment of wishes of older adults.Methods: Three studies were involved. Study 1 developed a 26-item pool on wish fulfillment through in-depth interviews with 22 older adults. Study 2 reduced the pool to 23 items through validation with a new sample of 315 older adults and examined the internal reliability. Study 3 involved a confirmatory factor analysis (CFA) and examined the test-retest reliability and the convergent validity of the scale with the construct of regret.Results: A five-factor structure model of 23 items was identified through exploratory factor analysis, which accounted for 51.67% of variance. As informed by the CFA in Study 3, a five-factor 22-item model was the best fit. Internal reliability and test-retest reliability was found to be good. Convergent validity was examined through correlation with the construct of future regret. The correlation, though statistically significant, was small.Conclusion: CSWFS demonstrates good psychometric properties, but the construct might be slightly different from that of future regrets. Probably, CSWFS addresses a construct that is under-explored but is of importance to older adults and especially to the Chinese community.

scholarly journals The Modified Gait Efficacy Scale: Establishing the Psychometric Properties in Older Adults

2012 ◽  
Vol 92 (2) ◽  
pp. 318-328 ◽  
Author(s):  
Alaina M. Newell ◽  
Jessie M. VanSwearingen ◽  
Elizabeth Hile ◽  
Jennifer S. Brach
Keyword(s):  
Older Adults ◽  
Correlation Coefficient ◽  
Internal Consistency ◽  
Intraclass Correlation ◽  
Community Dwelling ◽  
Self Report ◽  
Retest Reliability ◽  
And Performance ◽  
Test Retest Reliability ◽  
Community Dwelling Older Adults

BackgroundPerceived ability or confidence plays an important role in determining function and behavior. The modified Gait Efficacy Scale (mGES) is a 10-item self-report measure used to assess walking confidence under challenging everyday circumstances.ObjectiveThe purpose of this study was to determine the reliability, internal consistency, and validity of the mGES as a measure of gait in older adults.DesignThis was a cross-sectional study.MethodsParticipants were 102 community-dwelling older adults (mean [±SD] age=78.6±6.1 years) who were independent in ambulation with or without an assistive device. Participants were assessed using the mGES and measures of confidence and fear, measures of function and disability, and performance-based measures of mobility. In a subsample (n=26), the mGES was administered twice within a 1-month period to establish test-retest reliability through the intraclass correlation coefficient (ICC [2,1]). The standard error of measure (SEM) was determined from the ICC and standard deviation. The Cronbach α value was calculated to determine internal consistency. To establish the validity of the mGES, the Spearman rank order correlation coefficient was used to examine the association with measures of confidence, fear, gait, and physical function and disability.ResultsThe mGES demonstrated test-retest reliability within the 1-month period (ICC=.93, 95% confidence interval=.85, .97). The SEM of the mGES was 5.23. The mGES was internally consistent across the 10 items (Cronbach α=.94). The mGES was related to measures of confidence and fear (r=.54–.88), function and disability (Late-Life Function and Disability Instrument, r=.32–.88), and performance-based mobility (r=.38–.64).LimitationsThis study examined only community-dwelling older adults. The results, therefore, should not be generalized to other patient populations.ConclusionThe mGES is a reliable and valid measure of confidence in walking among community-dwelling older adults.

scholarly journals Relationship Between Dynamic Balance Measures and Functional Performance in Community-Dwelling Elderly People

2010 ◽  
Vol 90 (5) ◽  
pp. 748-760 ◽  
Author(s):  
Ankur Desai ◽  
Valerie Goodman ◽  
Naaz Kapadia ◽  
Barbara L. Shay ◽  
Tony Szturm
Keyword(s):  
Older Adults ◽  
Elderly People ◽  
Dynamic Balance ◽  
Community Dwelling ◽  
Standing Balance ◽  
Self Report ◽  
Clinical Test ◽  
Balance Assessment ◽  
Test Protocol ◽  
Community Dwelling Older Adults

BackgroundPoor balance control, mobility restrictions, and fall injuries are serious problems for many older adults.ObjectiveThe purpose of this study was to evaluate a new dynamic standing balance assessment test for identifying individuals at risk for falling in a group of community-dwelling older adults.DesignThis was a cross-sectional observational study of 72 community-dwelling older adults who were receiving rehabilitation in a geriatric day hospital.MethodA Dynamic Balance Assessment (DBA) test protocol was developed based on the concept of the Sensory Organization Test and the Clinical Test of Sensory Interaction and Balance. The DBA consists of 6 tasks performed on a normal floor surface and repeated on a sponge surface. A flexible pressure mat was used to record the foot's center of pressure (COP) on both surfaces, and loss of balance was recorded. Balance performance also was evaluated using the Berg Balance Scale, the Timed “Up & Go” Test, gait speed, and the Six-Minute Walk Test. Participants were classified as “fallers” or “nonfallers” based on a self-report.ResultsNo significant differences were noted between the faller group (n=47) and the nonfaller group (n=25) for demographic variables or medications. The DBA composite scores, which were derived from analysis of COP excursions of the 6 tasks performed on the sponge surface, were able to distinguish between fallers and nonfallers. Of the clinical tests, only the Timed “Up & Go” Test was able to differentiate between the faller and nonfaller groups.LimitationsA prospective study is needed to confirm the current findings and to expand testing to a larger and more diverse sample.ConclusionsThe findings indicate that analysis of the extent and amount of COP displacements during selected tasks and under different surface conditions is an appropriate method to assess dynamic standing balance controls and can discriminate between fallers and nonfallers among community-dwelling elderly people.

The Groningen Meander Walking Test: A Dynamic Walking Test for Older Adults With Dementia

2014 ◽  
Vol 94 (2) ◽  
pp. 262-272 ◽  
Author(s):  
Willem J.R. Bossers ◽  
Lucas H.V. van der Woude ◽  
Froukje Boersma ◽  
Erik J.A. Scherder ◽  
Marieke J.G. van Heuvelen
Keyword(s):  
Older Adults ◽  
Test Performance ◽  
Adherence Rate ◽  
Test Duration ◽  
Dynamic Walking ◽  
Time Score ◽  
Walking Test ◽  
Retest Reliability ◽  
People With Dementia ◽  
Test Retest Reliability

BackgroundCurrent dynamic walking tests, used in studies with older adults with dementia, rely strongly on healthy cognitive and physical function. Therefore, the Groningen Meander Walking Test (GMWT) was developed specifically for people with dementia. The aim of the GMWT is to measure dynamic walking ability by walking over a meandering curved line, with an emphasis on walking speed and stepping accuracy, while changing direction.ObjectiveThe purpose of this study was to investigate the feasibility, test-retest reliability, and minimal detectable change (MDC) of the GMWT.DesignA repeated-measures design was used.MethodsForty-two people with dementia participated in the study. Adherence rate, adverse events, repetition of instructions during test performance, test duration, and number of oversteps were assessed.ResultsThe adherence rate was excellent, with no adverse events. No repetitive instructions were given during test performance, and test duration was short (mean=17.16 seconds) with few oversteps (mean=1.94 oversteps). Test-retest reliability for participants without a walking device was excellent for the GMWT time score (intraclass correlation coefficient [ICC]=.942), with an MDC of 2.96 seconds. Test-retest reliability for participants with a 4-wheeled walker (4WW) was moderate (ICC=.837), with an MDC of 10.35 seconds. For the overstep score, a marginal ICC of .630 was found, with an MDC of 4.38 oversteps.LimitationsNo fall data were available, and there was a volunteer bias.ConclusionsThe GMWT is a feasible test for people with dementia. With the GMWT time score, a reliable and sensitive field test to measure walking abilities in older adults with dementia is available. The GMWT overstep score can be used to give information about the execution according to protocol and should be emphasized during the instructions. Future studies need to investigate the validity of the GMWT.

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