scholarly journals Reliability and minimal detectable change values for performance-based measures of physical functioning in the Canadian Longitudinal Study on Aging (CLSA)

2021 ◽  
Author(s):  
Marla K Beauchamp ◽  
Qiukui Hao ◽  
Ayse Kuspinar ◽  
Cassandra D’Amore ◽  
Giulia Scime ◽  
...  
Keyword(s):  
Longitudinal Study ◽  
Grip Strength ◽  
Gait Speed ◽  
Community Dwelling ◽  
Minimal Detectable Change ◽  
Age Group ◽  
Detectable Change ◽  
Timed Up And Go ◽  
Single Leg Stance ◽  
Chair Rise

Abstract BACKGROUND The aim of this study was to determine the relative and absolute reliabilities of five key performance-based measures of physical function in the Canadian Longitudinal Study on Aging (CLSA). METHODS An age-stratified sub-sample of 147 participants from the CLSA who were undergoing their 3-year data collection visit participated in two repeat visits (within one week). Participants underwent tests of grip strength, 4-metre gait speed, Timed Up and Go (TUG), chair-rise and single-leg stance (left, right, mean, maximum). Intra-class correlation coefficients (ICC), standard error of measurement (SEM) and minimal detectable change (MDC) values were calculated. RESULTS The relative reliability for grip strength was excellent (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) for participants overall. For participants between 50 and 64 years, TUG and gait speed had poor reliabilities (ICC = 0.38 or 0.33, respectively). For participants aged 75+ years, the single-leg stance had poor reliability (ICC=0.30-0.39). The MDC90 was about 6 kg for grip strength, 2.3 seconds for TUG, 0.2 metres/second for gait speed, 5.2 seconds for chair-rise, and ranged from 22.8 to 26.2 seconds for the single-leg stance. CONCLUSIONS Among community-dwelling Canadians >50 years old, the reliabilities of the CLSA measures were moderate to excellent. The TUG and gait speed in the youngest age group, and the single-leg stance in oldest age group, showed poor reliability. MDC values can be used to interpret changes over time.

scholarly journals Reliability, measurement error and minimum detectable change in mobility measures: a cohort study of community-dwelling adults aged 50 years and over in Ireland

BMJ Open ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. e030475 ◽  
Author(s):  
Orna A Donoghue ◽  
George M Savva ◽  
Axel Börsch-Supan ◽  
Rose Anne Kenny
Keyword(s):  
Gait Speed ◽  
Walking Speed ◽  
Intraclass Correlation ◽  
Health Assessment ◽  
Population Based ◽  
Time Of Day ◽  
Community Dwelling ◽  
Detectable Change ◽  
Timed Up And Go ◽  
Minimum Detectable Change

ObjectiveTo estimate the effects of repeat assessments, rater and time of day on mobility measures and to estimate their variation between and within participants in a population-based sample of Irish adults aged ≥50 years.DesignTest–retest study in a population representative sample.SettingAcademic health assessment centre of The Irish Longitudinal Study on Ageing (TILDA).Participants128 community-dwelling adults from the Survey for Health, Ageing and Retirement in Europe (SHARE) Ireland study who agreed to take part in the SHARE-Ireland/TILDA collaboration.InterventionsNot applicable.Outcome measuresParticipants performed timed up-and-go (TUG), repeated chair stands (RCS) and walking speed tests administered by one of two raters. Repeat assessments were conducted 1–4 months later. Participants were randomised with respect to a change in time (morning, afternoon) and whether the rater was changed between assessments. Within and between-participant variance for each measure was estimated using mixed-effects models. Intraclass correlation (ICC), SE of measurement and minimum detectable change (MDC) were reported.ResultsAverage performance did not vary between baseline and repeat assessments in any test, except RCS. The rater significantly affected performance on all tests except one, but time of day did not. Reliability varied from ICC=0.66 (RCS) to ICC=0.88 (usual gait speed). MDC was 2.08 s for TUG, 4.52 s for RCS and ranged from 19.49 to 34.73 cm/s for walking speed tests. There was no evidence for lower reliability of gait parameters with increasing time between assessments.ConclusionsReliability varied for each test when measurements are obtained over 1–4 months with most variation due to rater effects. Usual and motor dual task gait speed demonstrated highest reliability.

scholarly journals Novel Analytic Approaches to Investigate Minute-Level Actigraphy and Associations With Physical Function

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 194-195
Author(s):  
Kaiyuan Hua ◽  
Sheng Luo ◽  
Katherine Hall ◽  
Miriam Morey ◽  
Harvey Cohen
Keyword(s):  
Physical Activity ◽  
Data Analysis ◽  
Physical Function ◽  
Functional Data Analysis ◽  
Functional Data ◽  
Gait Speed ◽  
Community Dwelling ◽  
Accelerometer Data ◽  
Single Leg Stance ◽  
Minute Walk

Abstract Background. Functional decline in conjunction with low levels of physical activity has implications for health risks in older adults. Previous studies have examined the associations between accelerometry-derived activity and physical function, but most of these studies reduced these data into average means of total daily physical activity (e.g., daily step counts). A new method of analysis “functional data analysis” provides more in-depth capability using minute-level accelerometer data. Methods. A secondary analysis of community-dwelling adults ages 30 to 90+ residing in southwest region of North Carolina from the Physical Performance across the Lifespan (PALS) study. PALS assessments were completed in-person at baseline and one-week of accelerometry. Final analysis includes 669 observations at baseline with minute-level accelerometer data from 7:00 to 23:00, after removing non-wear time. A novel scalar-on-function regression analysis was used to explore the associations between baseline physical activity features (minute-by-minute vector magnitude generated from accelerometer) and baseline physical function (gait speed, single leg stance, chair stands, and 6-minute walk test) with control for baseline age, sex, race and body mass index. Results. The functional regressions were significant for specific times of day indicating increased physical activity associated with increased physical function around 8:00, 9:30 and 15:30-17:00 for rapid gait speed; 9:00-10:30 and 15:00-16:30 for normal gait speed; 9:00-10:30 for single leg stance; 9:30-11:30 and 15:00-18:00 for chair stands; 9:00-11:30 and 15:00-18:30 for 6-minute walk. Conclusion. This method of functional data analysis provides news insights into the relationship between minute-by-minute daily activity and health.

scholarly journals Associations Between Potentially Modifiable and Nonmodifiable Risk Factors and Gait Speed in Middle- and Older-Aged Adults: Results From the Canadian Longitudinal Study on Aging

2021 ◽  
Author(s):  
Erica Figgins ◽  
Yun-Hee Choi ◽  
Mark Speechley ◽  
Manuel Montero-Odasso
Keyword(s):  
Risk Factors ◽  
Longitudinal Study ◽  
Gait Speed ◽  
Chronic Conditions ◽  
Serum Vitamin ◽  
Lifestyle Factors ◽  
Community Dwelling ◽  
Life Course Perspective ◽  
Factors Associated ◽  
Modifiable Factors

Abstract Background Gait speed is a strong predictor of morbidity and mortality in older adults. Understanding the factors associated with gait speed and the associated adverse outcomes will inform mitigation strategies. We assessed the potentially modifiable and nonmodifiable factors associated with gait speed in a large national cohort of middle and older-aged Canadian adults. Methods We examined cross-sectional baseline data from the Canadian Longitudinal Study on Aging (CLSA) Comprehensive cohort. The study sample included 20 201 community-dwelling adults aged 45–85 years. The associations between sociodemographic and anthropometric factors, chronic conditions, and cognitive, clinical, and lifestyle factors and 4-m usual gait speed (m/s) were estimated using hierarchical multivariable linear regression. Results The coefficient of determination, R  2, of the final regression model was 19.7%, with 12.9% of gait speed variability explained by sociodemographic and anthropometric factors, and nonmodifiable chronic conditions and 6.8% explained by potentially modifiable chronic conditions, cognitive, clinical, and lifestyle factors. Potentially modifiable factors significantly associated with gait speed include cardiovascular conditions (unstandardized regression coefficient, B = −0.018; p < .001), stroke (B = −0.025; p = .003), hypertension (B = −0.007; p = .026), serum Vitamin D (B = 0.004; p < .001), C-reactive protein (B = −0.005; p = .005), depressive symptoms (B = −0.003; p < .001), physical activity (B = 0.0001; p < .001), grip strength (B = 0.003; p < .001), current smoking (B = −0.026; p < .001), severe obesity (B = −0.086; p < .001), and chronic pain (B = −0.008; p = .018). Conclusions The correlates of gait speed in adulthood are multifactorial, with many being potentially modifiable through interventions and education. Our results provide a life-course-perspective framework for future longitudinal assessments risk factors affecting gait speed.

scholarly journals Standard Error of the Mean and Minimal Detectable Change of Gait Speed in Older Adults Using Japanese Long-Term Care Insurance System

2021 ◽  
Vol 7 ◽  
pp. 233372142110489
Author(s):  
Yui Takada ◽  
Shigeharu Tanaka
Keyword(s):  
Older Adults ◽  
Standard Error ◽  
Gait Speed ◽  
Long Term Care ◽  
Minimal Detectable Change ◽  
Detectable Change ◽  
Term Care ◽  
Long Term Care Insurance ◽  
The Mean

Evaluation of motor function, such as gait ability, can accurately predict the subsequent occurrence of disability in older adults. There are no reports of standard error of the mean (SEM) or minimal detectable change (MDC) with respect to gait in Japanese long-term care insurance-certified individuals. The purpose of this study was to investigate the values of preferred gait, fast gait, and the timed up and go (TUG) test. This study included 46 participants using the Japanese long-term care insurance system. (age 86.5 ± 6.6 years, 12 men, 34 women). The duration of three gait were measured twice using a stopwatch. The SEM was 0.07 for preferred gait, 0.09 for fast gait and 2.59 for TUG. The MDC was 0.19 for preferred gait, 0.26 for fast gait, and 7.17 for TUG. The SEM and MDC values of preferred gait, fast gait, and TUG in this study corroborated with those of previous studies, whereas others were different. Considering that gait speed differs with the country, it may be difficult to compare it among different population groups. We obtained the results of gait speed of Japanese long-term care insurance-certified individuals, which is a new finding

scholarly journals 94 Association between Dual-Task Timed “UP and GO” Test and Occurrence of Falls According to Age Group (Young-Older or Old-Older Adults): A Longitudinal Observation Study

2019 ◽  
Vol 48 (Supplement_4) ◽  
pp. iv18-iv27
Author(s):  
Tsuyoshi Asai ◽  
Kensuke Oshima ◽  
Yoshihiro Fukumoto ◽  
Shogo Misu
Keyword(s):  
Older Adults ◽  
Older Adult ◽  
Dual Task ◽  
Community Dwelling ◽  
Age Group ◽  
Adult Group ◽  
Observation Study ◽  
Timed Up And Go ◽  
Community Dwelling Older Adults

Abstract Aim To elucidate the association between the occurrence of falls and timed “up and go” (TUG) test score in a dual-task condition among community-dwelling older adults by age group. Methods This longitudinal observation study included 987 community-dwelling older adults at baseline. A TUG test (single-TUG) and a TUG test while counting aloud backward from 100 (dual-TUG) were conducted at baseline. The dual-task cost (DTC) value was computed from these results. Data on fall history were obtained using a self-administered questionnaire at the 1-year follow-up. At follow-up, 322 participants had dropped out and six participants had missing data for falls. The final analysis included 658 individuals (follow-up rate: 658/987, 67%) divided into a young-older adult group (aged 60–74 years) and an old-older adult group (aged 75 years or older). Associations between the occurrence of falls and TUG-related values were analyzed by age group using multivariate logistic regression models. Results For old-older adults, there were significant associations between the occurrence of falls and DTC value (odds ratio [OR] 0.981, 95% confidence interval [CI]: 0.963–0.999, p = 0.040) and single-TUG score (OR 1.129, 95% CI: 1.006–1.268, p = 0.039). However, no significant associations were observed for young-older adults. Conclusions Slower single-TUG test score and lower DTC value are associated with the occurrence of falls among old-older adults but not among young-older adults. Dual task assessment is useful for predicting falls in TUG fall assessment for old-older adults.

scholarly journals Differences in sarcopenia prevalence between upper-body and lower-body based EWGSOP2 muscle strength criteria: the Tromsø study 2015–2016

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Jonas Johansson ◽  
Bjørn Heine Strand ◽  
Bente Morseth ◽  
Laila Arnesdatter Hopstock ◽  
Sameline Grimsgaard
Keyword(s):  
Waist Circumference ◽  
Grip Strength ◽  
Body Height ◽  
Community Dwelling ◽  
Upper Body ◽  
Linear Regression Models ◽  
Timed Up And Go ◽  
Cross Sectional ◽  
Chair Stand ◽  
European Working

Abstract Background The European Working Group on Sarcopenia in Older People (EWGSOP2) recommends grip strength and chair stand tests to be used as primary defining measures. It is unclear how either test affects prevalence estimates. Methods This cross-sectional study involved 3498 community-dwelling participants (40–84 years) from the 7th Tromsø Study survey (2015–2016). We used grip strength, five-repetition chair stands, four-meter Walk Speed Test, Timed-Up-and-Go (TUG) and Dual-Energy X-ray Absorptiometry measurements. Data were analyzed using multiple linear regression models and ROC-curves. Results Probable and confirmed sarcopenia prevalence was 1.3 and 4.4% based on grip strength and chair stands, respectively. There was very low agreement between grip strength and chair stand cut-offs (κ = 0.07), with only 4.3% of participants defined as having probable sarcopenia overlapping in the two criteria. Participants with grip strength-based sarcopenia had lower mean height, weight, waist circumference, and appendicular lean mass relative to body height (ALMheight2) than non-sarcopenic participants (all p < 0.001), after adjusting for multiple covariates. Conversely, participants with chair stand-based sarcopenia had similar height, higher weight, waist circumference and body fat% compared to non-sarcopenic participants (all p < 0.05). Area-under-curves (AUCs) for TUG-time were significantly larger when using chair stand instead of grip strength cut-offs (0.86, 95% CI 0.84–0.89 vs. 0.75, 95% CI 0.69–0.83). Conclusions Using chair stands instead of grip strength more than doubled probable sarcopenia prevalence across all ages. The two measures defined individuals of contradictory anthropometrics, body composition, and dissimilar physical function to have probable sarcopenia. Researchers should further evaluate the consequences of using different strength measures in the EWGSOP2 definition to classify sarcopenia.

scholarly journals Comparison of difficulty with activities of daily living in elderly adults undergoing hemodialysis and community-dwelling individuals: a cross-sectional study

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Toshiki Kutsuna ◽  
Yusuke Isobe ◽  
Takaaki Watanabe ◽  
Yusuke Matsunaga ◽  
Satomi Kusaka ◽  
...  
Keyword(s):  
Physical Function ◽  
Grip Strength ◽  
Gait Speed ◽  
Community Dwelling ◽  
Test Time ◽  
Control Group ◽  
Elderly Adults ◽  
Sit To Stand ◽  
Difficulty Score ◽  
Usual Gait Speed

Abstract Background Elderly adults undergoing hemodialysis (HD) have multiple comorbidities, physical frailty, and functional dependence with activities of daily living (ADL). ADL difficulty is an early predictor of ADL dependency in community-dwelling elderly adults. However, the characteristics of ADL difficulty in patients undergoing HD have not yet been reported. The present study aimed to examine the current status and characteristics of physical function and ADL difficulty in ambulatory elderly patients undergoing HD. Methods In all, 136 elderly outpatients undergoing HD and 40 community-dwelling controls participated in the present study. The characteristics, physical function (SARC-F score, grip strength, five-times sit-to-stand test time, usual gait speed, maximum gait speed, and short physical performance battery score), and scores from the ADL difficulty questionnaires [difficulty related to upper limb (U/L) and lower limb (L/L) functions] were compared between the HD and control groups. Multiple regression analysis was performed to examine whether the characteristics of physical function were able to discriminate ADL difficulty in the HD group. Results The HD group had a significantly greater SARC-F score, lower grip strength, longer five-times sit-to-stand test time, slower usual gait speed, slower maximum gait speed, lower short physical performance battery score, and lower U/L and L/L ADL difficulty scores compared to the control group (all P < 0.001). The distribution of U/L and L/L ADL difficulty scores showed a wider variation in the HD group than in the control group. The U/L ADL difficulty score was independently associated with the SARC-F score (β = −0.52, P < 0.001) and grip strength (β = 0.21, P = 0.02). The L/L ADL difficulty score was independently associated with the SARC-F score (β = −0.56, P < 0.001) and usual gait speed (β = 0.35, P < 0.001). Conclusions The elderly HD group had a poorer physical function and experienced stronger ADL difficulty than the control group. There was an association between ADL difficulty and sarcopenia or poor physical function among patients undergoing HD. These findings provide useful data for effective clinical management to prevent decline of ADL in ambulatory elderly patients undergoing HD.

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