scholarly journals Day-to-Day Variability and Year-to-Year Reproducibility of Accelerometer-Measured Free-Living Sit-to-Stand Transitions Volume and Intensity among Community-Dwelling Older Adults

Sensors ◽  
2021 ◽  
Vol 21 (18) ◽  
pp. 6068
Author(s):  
Antti Löppönen ◽  
Laura Karavirta ◽  
Erja Portegijs ◽  
Kaisa Koivunen ◽  
Taina Rantanen ◽  
...  
Keyword(s):  
Older Adults ◽  
Angular Velocity ◽  
Functional Disability ◽  
Intraclass Correlation ◽  
Living Environment ◽  
Community Dwelling ◽  
Free Living ◽  
Sit To Stand ◽  
Increased Risk ◽  
Community Dwelling Older Adults

(1) Background: The purpose of this study was to evaluate the day-to-day variability and year-to-year reproducibility of an accelerometer-based algorithm for sit-to-stand (STS) transitions in a free-living environment among community-dwelling older adults. (2) Methods: Free-living thigh-worn accelerometry was recorded for three to seven days in 86 (women n = 55) community-dwelling older adults, on two occasions separated by one year, to evaluate the long-term consistency of free-living behavior. (3) Results: Year-to-year intraclass correlation coefficients (ICC) for the number of STS transitions were 0.79 (95% confidence interval, 0.70–0.86, p < 0.001), for mean angular velocity—0.81 (95% ci, 0.72–0.87, p < 0.001), and maximal angular velocity—0.73 (95% ci, 0.61–0.82, p < 0.001), respectively. Day-to-day ICCs were 0.63–0.72 for number of STS transitions (95% ci, 0.49–0.81, p < 0.001) and for mean angular velocity—0.75–0.80 (95% ci, 0.64–0.87, p < 0.001). Minimum detectable change (MDC) was 20.1 transitions/day for volume, 9.7°/s for mean intensity, and 31.7°/s for maximal intensity. (4) Conclusions: The volume and intensity of STS transitions monitored by a thigh-worn accelerometer and a sit-to-stand transitions algorithm are reproducible from day to day and year to year. The accelerometer can be used to reliably study STS transitions in free-living environments, which could add value to identifying individuals at increased risk for functional disability.

scholarly journals Three definitions of probable sarcopenia and associations with falls and functional disability among community-dwelling older adults

2021 ◽  
Author(s):  
Juliana Carvalho Segato Marincolo ◽  
Ivan Aprahamian ◽  
Ligiana Pires Corona ◽  
Anita Liberalesso Neri ◽  
Mônica Sanches Yassuda ◽  
...  
Keyword(s):  
Older Adults ◽  
Functional Disability ◽  
Community Dwelling ◽  
Community Dwelling Older Adults

Daily Physical Activity and Functional Disability Incidence in Community-Dwelling Older Adults with Chronic Pain: A Prospective Cohort Study

Pain Medicine ◽  
2018 ◽  
Vol 20 (9) ◽  
pp. 1702-1710 ◽  
Author(s):  
Keitaro Makino ◽  
Sangyoon Lee ◽  
Sungchul Lee ◽  
Seongryu Bae ◽  
Songee Jung ◽  
...  
Keyword(s):  
Physical Activity ◽  
Older Adults ◽  
Chronic Pain ◽  
Functional Disability ◽  
Community Dwelling ◽  
Daily Physical Activity ◽  
Activity Duration ◽  
Intensity Physical Activity ◽  
Physical Activity Duration ◽  
Community Dwelling Older Adults

Abstract Objective This study examined the association between daily physical activity and functional disability incidence in community-dwelling older adults with chronic pain. Design Prospective cohort study. Setting Japanese community. Subjects Of the 5,257 participants enrolled for baseline assessment, data on the 693 participants who had chronic lower back or knee pain and underwent daily physical activity assessment using an accelerometer were analyzed. Methods Participants were assessed for regular physical activity (step counts, moderate- to vigorous-intensity physical activity duration, and light-intensity physical activity duration) using an accelerometer at baseline and were followed up for monthly functional disability incidence, based on the national long-term care insurance system, for approximately two years. We determined the effect of physical activity cutoff points on functional disability incidence using receiver operating characteristic curves and Youden index. Cox proportional hazards regression models were used to analyze associations between the cutoff points and disability incidence. Results Among the 693 participants with chronic pain, 69 (10.0%) developed functional disability during the follow-up period. Participants with lower physical activity levels showed significantly higher risk of disability. After adjusting for all covariates, functional disability was associated with step counts (hazard ratio [HR] = 1.79, 95% confidence interval [CI] = 1.02–3.14) and moderate- to vigorous-intensity physical activity duration (HR = 2.02, 95% CI = 1.16–3.51) but had no relationship with light-intensity physical activity duration (HR = 1.72, 95% CI = 0.97–3.05). Conclusions Maintenance of physical activity with at least moderate intensity may be effective in preventing disability even among older adults with chronic pain.

scholarly journals Prevalence of frailty syndrome and its associated factors among community-dwelling elderly in East Coast of Peninsular Malaysia

2018 ◽  
Vol 6 ◽  
pp. 205031211877558 ◽  
Author(s):  
Fairus Asma Mohd Hamidin ◽  
Siti Nur’Asyura Adznam ◽  
Zuriati Ibrahim ◽  
Yoke Mun Chan ◽  
Nur Hafizah Abdul Aziz
Keyword(s):  
Older Adults ◽  
Binary Logistic Regression ◽  
Peninsular Malaysia ◽  
Clinical Syndrome ◽  
Community Dwelling ◽  
Frailty Syndrome ◽  
Increased Risk ◽  
Health Related ◽  
Prevention Programmes ◽  
Community Dwelling Older Adults

Objective: Frailty is a clinical syndrome with increased risk of poor health outcomes and particularly prevalent in older adults and community population. The study’s aim was therefore to determine the prevalence of frailty and its association with sociodemographic and socioeconomic characteristics, health-related status, and anthropometric measurements among community-dwelling older adults. Methods: A total of 279 older adults aged 60 years and above were randomly selected. Respondents were classified as non-frail (<2 criteria) or frail (≥3 criteria) based on the ‘phenotype of frailty’. A binary logistic regression was used to determine predictors of frailty. Results: The prevalence of frailty was 18.3%. The frail older adults were positively associated with advanced age, being unmarried, hospitalisation in the previous year, poor self-rated health, and lower body mass index. Discussion: These results give an overview on underlying effects and guiding actions for prevention programmes functioning to reverse and minimise the adverse effects of frailty syndrome.

Physical Performance Predictors for Incident Dementia Among Japanese Community-Dwelling Older Adults

2019 ◽  
Vol 99 (9) ◽  
pp. 1132-1140
Author(s):  
Takehiko Doi ◽  
Kota Tsutsumimoto ◽  
Sho Nakakubo ◽  
Min-Ji Kim ◽  
Satoshi Kurita ◽  
...  
Keyword(s):  
Older Adults ◽  
Risk Assessment ◽  
Grip Strength ◽  
Physical Performance ◽  
Performance Level ◽  
Community Dwelling ◽  
Sit To Stand ◽  
Dementia Risk ◽  
Incident Dementia ◽  
Community Dwelling Older Adults

Abstract Background Evaluating physical performance could facilitate dementia risk assessment. However, findings differ regarding which type of physical performance best predicts dementia. Objective The objective of this study was to examine the association between physical performance and incidence of dementia in Japanese community-dwelling older adults. Design This was a prospective study of community-dwelling older adults. Methods Of 14,313 invited individuals who were ≥ 65 years old, 5104 agreed to participate from 2011 to 2012, and 4086 (52% women; mean age = 72.0 years) met the criteria. Baseline assessments of the following physical performance indicators were obtained: grip strength, the Five-Times Sit-to-Stand Test, and the Timed “Up & Go” Test. The physical performance level in each test was categorized as C1 (highest), C2 (middle–high), C3 (middle–low), or C4 (lowest) on the basis of sex-stratified quartile values. Incident dementia status was obtained from medical records that were updated monthly. Results During follow-up (mean duration = 42.9 months), there were 243 incident cases of dementia (5.9%). Log-rank test results indicated that a lower physical performance level constituted a significant risk factor for dementia. After adjustment for covariates, Cox proportional hazards models (reference: highest physical performance level [C1]) demonstrated that the Five-Times Sit-to-Stand Test in the group with the lowest physical performance level (hazard ratio = 1.69; 95% CI = 1.10–2.59) was significantly associated with a risk of dementia. Likewise, the Timed “Up & Go” Test in the group with the lowest physical performance level (hazard ratio = 1.54; 95% CI = 1.01–2.35) was significantly associated with a risk of dementia. However, grip strength was not significantly associated with a risk of dementia. Limitations This study was limited by the use of medical record data. Conclusions A lower mobility-related physical performance level was associated with dementia risk. Dementia risk assessment should include an adequate evaluation of physical function.

Development and Psychometrics Test of Home Environment Assessment Checklist for Community-Dwelling Older Adults with Dementia

2020 ◽  
Vol 77 (4) ◽  
pp. 1389-1396
Author(s):  
Yi Wang ◽  
Liyu Li ◽  
Shuangyue Tian ◽  
Jie Wu ◽  
Zhiwen Wang
Keyword(s):  
Older Adults ◽  
Home Environment ◽  
Visual Cues ◽  
Reliability And Validity ◽  
Living Environment ◽  
Community Dwelling ◽  
Rater Reliability ◽  
Environment Assessment ◽  
People With Dementia ◽  
Community Dwelling Older Adults

Background: Home environment is a core domain in the care of community-dwelling older adults with dementia, but there is no suitable instrument to measure it in China. Objective: To develop and psychometrically test the home environment assessment checklist for community-dwelling older adults with dementia. Methods: A three-step process was performed to develop and test this instrument: 1) based on the evidence-based theory, the checklist was summarized as the main points of evidence from living environment settings among older adults with dementia, 2) the draft tool was assigned to an iterative process of evaluation by a panel of examiners consisting of experts from treatment, nursing and caring, people with dementia and their caregivers, 3) inter-rater reliability and internal consistency were calculated with a sample of 348 caregivers of the older adults with dementia. Results: The HEAC consisted of 71 items in domains addressing safety, stability and familiarity, visual cues, and sensory stimulation. Psychometric evaluation showed that this tool demonstrated sound reliability and validity. Content validity was 0.969 which was established by a panel of experts (n = 10). Inter-rater reliability of two researchers was 0.978, and 0.848 for researchers and caregivers. Test-retest reliability was excellent (ICC = 0.757–0.877) in community-dwelling older adults with dementia 2 week apart. Conclusion: The HEAC is a new tool to help collect the reliable information on the barriers and facilitators of home environment for community-dwelling older adults with dementia and to precipitate the home modification process to improve the quality of care for people with dementia and their caregivers in daily life.

scholarly journals Smartphone Monitoring of Gait and Balance During Irregular Surface Walking and Obstacle Crossing

2020 ◽  
Vol 2 ◽  
Author(s):  
Janeesata Kuntapun ◽  
Patima Silsupadol ◽  
Teerawat Kamnardsiri ◽  
Vipul Lugade
Keyword(s):  
Older Adults ◽  
Intraclass Correlation ◽  
Step Length ◽  
Living Environment ◽  
The Body ◽  
Irregular Surface ◽  
Time Step ◽  
Free Living ◽  
Obstacle Crossing ◽  
Gait Adaptation

As gait adaptation is vital for successful locomotion, the development of field-based tools to quantify gait in challenging real-world environments are crucial. The aims of this study were to assess the reliability and validity of a smartphone-based gait and balance assessment while walking on unobstructed and obstructed terrains using two phone placements. Furthermore, age-related differences in smartphone-derived gait strategies when navigating different walking conditions and environments were evaluated. By providing a method for evaluating gait in the simulated free-living environment, results of this study can elucidate the strategies young and older adults utilize to navigate obstructed and unobstructed walking paths. A total of 24 young and older adults ambulated indoors and outdoors under three conditions: level walking, irregular surface walking, and obstacle crossing. Android smartphones placed on the body and in a bag computed spatiotemporal gait (i.e., velocity, step time, step length, and cadence) and balance (i.e., center of mass (COM) displacement), with motion capture and video used to validate parameters in the laboratory and free-living environments, respectively. Reliability was evaluated using the intraclass correlation coefficient and validity was evaluated using Pearson's correlation and Bland-Altman analysis. A three-way ANOVA was used to assess outcome measures across group, condition, and environment. Results showed that smartphones were reliable and valid for measuring gait across all conditions, phone placements, and environments (ICC2,1: 0.606–0.965; Pearson's r: 0.72–1.00). Although body and bag placement demonstrated similar results for spatiotemporal parameters, accurate vertical COM displacement could only be obtained from the body placement. Older adults demonstrated a longer step time and lower cadence only during obstacle crossing, when compared to young adults. Furthermore, environmental differences in walking strategy were observed only during irregular surface walking. In particular, participants utilized a faster gait speed and a longer step length in the free-living environment, compared to the laboratory environment. In conclusion, smartphones demonstrate the potential for remote patient monitoring and home health care. Along with being easy-to-use, inexpensive, and portable, smartphones can accurately evaluate gait during both unobstructed and obstructed walking, indoors and outdoors.

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