scholarly journals Association between objectively measured walking steps and sleep in community-dwelling older adults: A prospective cohort study

PLoS ONE ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. e0243910
Author(s):  
Noriyuki Kimura ◽  
Yasuhiro Aso ◽  
Kenichi Yabuuchi ◽  
Etsuro Matsubara
Keyword(s):  
Older Adults ◽  
Sleep Disturbances ◽  
Linear Regression Analysis ◽  
Community Dwelling ◽  
Sleep Efficiency ◽  
Ageing Society ◽  
Sleep Parameters ◽  
Objectively Measured ◽  
Community Dwelling Older Adults ◽  
The Relationship

Physical inactivity and sleep disturbances are major problems in an ageing society. There is increasing evidence that physical activity is associated with sleep quality. However, the association between daily walking steps and sleep remain unclear. This prospective study examined the relationship between objectively measured daily walking steps and sleep parameters in Japanese community-dwelling older adults. In total, 855 community-dwelling individuals aged 65 and above, with an uninterrupted follow-up from August 2015 to March 2016, were enrolled. The participants wore a wristband sensor for an average of 7.8 days every three months. Multiple linear regression analysis was performed to examine the relationship between daily walking steps and sleep parameters, including the total sleep time, sleep efficiency, time awake after sleep onset (WASO), awakening time count during the night, and naptime. The median (interquartile range, IQR) age of the participants was 73 (69–78) years, with 317 (37.1%) men and 538 (62.9%) women. The median (IQR) educational level was 12 (11–12) years, and the median (IQR) Mini-Mental State Examination score was 29 (27–30) points. The number of daily walking steps showed a positive correlation with sleep efficiency and an inverse correlation with WASO, awakening time count, and naptime, after adjusting for covariates and correcting for the false discovery rate (β = 0.098, 95% confidence interval [CI]: 0.034 to 0.162, p = 0.003; β = −0.107, 95% CI: −0.172 to −0.043, p = 0.001; β = −0.105, 95% CI: −0.17 to −0.04, p = 0.002; and β = −0.31, 95% CI: −0.371 to −0.249, p < 0.001, respectively). Our results can help promote walking as an intervention for preventing sleep disturbances in community-dwelling older adults.

MO884ASSOCIATION BETWEEN QUADRICEPS ISOMETRIC STRENGTH AND SLEEP DISTURBANCES AMONG PATIENTS ON HEMODIALYSIS

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
Shun Yoshikoshi ◽  
Yuta Suzuki ◽  
Shohei Yamamoto ◽  
Manae Harada ◽  
Keigo Imamura ◽  
...  
Keyword(s):  
Older Adults ◽  
Muscle Strength ◽  
Sleep Disturbance ◽  
Clinical Characteristics ◽  
Sleep Disturbances ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Community Dwelling ◽  
Restricted Cubic Splines ◽  
Community Dwelling Older Adults

Abstract Background and Aims The muscle strength of patients on hemodialysis (HD) is lower than that of community-dwelling older adults. Because decreased muscle strength, especially quadriceps isometric strength (QIS), has been reported to be a risk factor for increased mortality rate among patients undergoing HD, the prevention and correction of decreased QIS are very important in this population. Although some factors associated with decreased QIS among patients on HD have been reported, these factors remain unclear because patients on HD have many comorbidities with increasing age and prolonged HD vintage. In community-dwelling older adults, sleep disturbance is reported to be a factor associated with reduced muscle strength. In addition, the prevalence of sleep disturbance is higher in patients on HD. Therefore, it is necessary to investigate these associations in this population. We examined the association between QIS and sleep disturbances among patients receiving HD. Method This cross-sectional study included 211 outpatients undergoing HD three times a week. To evaluate QIS, a handheld dynamometer (μtas F-1; Anima, Tokyo, Japan) was used. Patients were asked to sit on a bench with their hip and knee flexed at an angle of 90°. They performed isometric voluntary contraction of the quadriceps for a maximum of 5 seconds, thrice, for both legs. The average of the right and left maximal QIS divided by the dry weight (%DW) was used in the analysis. Sleep disturbances were measured using the Athens Insomnia Scale (AIS), a self-administered questionnaire consisting of eight questions, each scored from 0 to 3. The total scores range from 0 to 24, with higher scores indicative of worse sleep quality. Clinical characteristics, including age, sex, body mass index, HD vintage, comorbidity score, serum albumin, C-reactive protein, and the Mini-Mental State Examination, were investigated. Multiple linear regression analysis and multivariable-adjusted restricted cubic splines with four knots were used to examine the association between QIS and sleep disturbances. Results The median age was 68 (interquartile range: 59–76) years, and 62% of the patients were men. In multiple linear regression analysis, the AIS score was extracted as a significant factor related to QIS after adjusting for clinical characteristics (regression coefficient: -0.45, 95% confidence interval: -0.84 to -0.05, p = 0.028). In the multivariable-adjusted restricted cubic splines, a nonlinear relationship was found between QIS and the AIS score even after adjusting for clinical characteristics. In addition, it was shown that QIS decreased significantly as the AIS score increased up to 6, which is the cutoff value for discriminating sleep disturbances (Figure). Conclusion Higher AIS scores were independently associated with decreased QIS among patients on HD. Future studies should investigate the causality between QIS and sleep disturbance in patients undergoing HD.

545 Actigraphic sleep parameters and anxiety symptoms among community-dwelling older adults

SLEEP ◽  
2021 ◽  
Vol 44 (Supplement_2) ◽  
pp. A215-A215
Author(s):  
Alice Ding ◽  
Emily Smail ◽  
Alfonso Alfini ◽  
Adam Spira
Keyword(s):  
Older Adults ◽  
Anxiety Symptoms ◽  
Community Dwelling ◽  
Depression Symptoms ◽  
Cross Sectional ◽  
Subsequent Change ◽  
Wrist Actigraphy ◽  
Sleep Parameters ◽  
Objectively Measured ◽  
Community Dwelling Older Adults

Abstract Introduction A number of cross-sectional studies have found that elevated levels of anxiety are associated with poor sleep among healthy older adults, but most have used self-reported sleep measures. We investigated the longitudinal association between objectively measured sleep (by wrist actigraphy) and subsequent change in anxiety symptoms in this population. Methods We studied 555 community-dwelling older adults (mean age 72.52±7.35, 77.48% white, 53.15% women) in the National Social Health and Aging Project (NSHAP) study who completed 3 nights of wrist actigraphy at wave 2 (2010–2011) and the Hospital Anxiety and Depression Scale at waves 2 and 3 (2015–2016). Actigraphic sleep parameters were averaged across nights and included: total sleep time (TST; minutes), percent sleep (%), wake after sleep onset (WASO; minutes), and sleep fragmentation. Change in anxiety was calculated as the difference between anxiety scores at wave 3 and wave 2. Results After adjusting for age, race, sex, education, body mass index, number of medical conditions, depression symptoms, and anxiety scores at wave 2, we found no significant associations between any actigraphic sleep parameter and subsequent change in anxiety symptoms (all p ≥ 0.390). Additional analyses revealed no significant cross-sectional associations at wave 2 (p ≥ 0.390). Conclusion We found no evidence for an association between actigraphic sleep and anxiety symptoms, or change in anxiety symptoms, in community-dwelling older adults. Additional studies using clinical anxiety disorder diagnoses are needed to evaluate the extent to which objectively measured sleep disturbance predicts clinically significant anxiety in older adults. Support (if any) American Academy of Sleep Medicine Foundation (#223-BS-19).

scholarly journals INDOOR AND REAL-LIFE OUTDOOR GAIT SPEED AND ITS ASSOCIATION ON GEOGRAPHIC LIFE-SPACE AND OUTDOOR MOBILITY

2019 ◽  
Vol 3 (Supplement_1) ◽  
pp. S472-S473
Author(s):  
Chek Hooi Wong ◽  
Pey June Tan ◽  
Mei Sian Chong ◽  
Jagadish U Mallya ◽  
Mimaika L Ginting ◽  
...  
Keyword(s):  
Older Adults ◽  
Gait Speed ◽  
Real Life ◽  
Community Dwelling ◽  
Lower Percentage ◽  
Accelerometer Data ◽  
Life Space ◽  
Objectively Measured ◽  
Community Dwelling Older Adults ◽  
The Relationship

Abstract Independent outdoor mobility is important to community-dwelling older adults as it enables reach and access to resources for everyday activities, but this becomes increasingly challenging with the progressive decline in physical performance in ageing. We aim to understand the relationship between Indoor (IGS) and Real-Life Outdoor Gait Speed (OGS) with objectively-measured geographic life-space extent and outdoor mobility among community-ambulant older adults in Singapore. Thirty-three participants aged ≥55 years living in three neighbourhoods wore hybrid mobility trackers continuously for 7 days. Baseline 6-metre IGS was measured with a stopwatch, while OGS was from outdoor accelerometer data. Nodes were defined as significant places visited for ≥5 minutes. Multiple linear regressions examined each association between IGS and OGS on geographic life-space extent and outdoor mobility measures adjusting for confounders. Participants’ mean age was 69.2±7.1 years with mean IGS and OGS of 1.11m/s and 0.85m/s respectively. They spent on average 4.7 hours/day out-of-home with the majority (57%) of nodes located within 500m from home. There were no significant associations between gait speeds and geographic life-space measures. Higher OGS was associated with higher total number of nodes/week while higher IGS was significantly associated with lower percentage of nodes within 500m from home. Our findings highlighted the complexity and multi-dimensionality of independent outdoor mobility as both gait speed performances were not significantly associated with geographic life-space extent, but rather with spatiotemporal interaction and opportunities to access locations for older adults’ daily activities.

scholarly journals Bidirectional Relationship Between Subjective Age and Frailty: Findings From the NHATS

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 271-271
Author(s):  
Yuxiao Li ◽  
Minhui Liu ◽  
Christina Miyawaki ◽  
Xiaocao Sun ◽  
Tianxue Hou ◽  
...  
Keyword(s):  
Older Adults ◽  
Clinical Syndrome ◽  
Community Dwelling ◽  
Chronological Age ◽  
Subjective Age ◽  
Bidirectional Relationship ◽  
Study Participants ◽  
Community Dwelling Older Adults ◽  
The Relationship ◽  
Hispanic White

Abstract Frailty is a clinical syndrome that becomes increasingly common as people age. Subjective age refers to how young or old individuals experience themselves to be. It is associated with many risk factors of frailty, such as increased depression, worse cognitive function, and poorer psychological wellbeing. In this study, we examined the relationship between subjective age and frailty using the 2011-2015 waves of the National Health and Aging Trends Study. Participants were community-dwelling older adults without frailty in the initial wave (N=1,165). Subjective age was measured by asking participants, “What age do you feel most of the time?” Based on the Fried five phenotypic criteria: exhaustion, unintentional weight loss, low physical activity, slow gait, and weak grip strength, frailty was categorized into robust=0, pre-frail=1 or 2; frail=3 or more criteria met. Participants were, on average, 74.1±6.5 years old, female (52%), and non-Hispanic White (81%). Eighty-five percent of the participants felt younger, and 3% felt older than their chronological age, but 41% of them were pre-frail/frail. Generalized estimating equations revealed that an “older” subjective age predicted a higher likelihood of pre-frailty and frailty (OR, 95%CI= 1.01, 1.01-1.02). In contrast, frailty predicted an “older” subjective age (OR, 95%CI= 2.97, 1.65-5.35) adjusting for demographics and health conditions. These findings suggest a bidirectional relationship between subjective age and frailty. Older people who feel younger than their chronological age are at reduced risk of becoming pre-frail/frail. Intervention programs to delay frailty progression should include strategies that may help older adults perceive a younger subjective age.

scholarly journals Relationship between Oral Hypofunction and Sarcopenia in Community-Dwelling Older Adults: The Otassha Study

2021 ◽  
Vol 18 (12) ◽  
pp. 6666
Author(s):  
Yoshihiro Kugimiya ◽  
Masanori Iwasaki ◽  
Yuki Ohara ◽  
Keiko Motokawa ◽  
Ayako Edahiro ◽  
...  
Keyword(s):  
Older Adults ◽  
Logistic Regression ◽  
Cross Sectional Study ◽  
Albumin Level ◽  
Community Dwelling ◽  
Tongue Pressure ◽  
Swallowing Function ◽  
Cross Sectional ◽  
Community Dwelling Older Adults ◽  
The Relationship

Oral hypofunction, resulting from a combined decrease in multiple oral functions, may affect systemic-condition deterioration; however, few studies have examined the association between oral hypofunction and general health among older adults. In this cross-sectional study, we examined the relationship between oral hypofunction and sarcopenia in community-dwelling older adults. We included 878 adults (268 men and 610 women, mean age 76.5 ± 8.3 years). Tongue coating index, oral moisture, occlusal force, oral diadochokinesis (/pa/,/ta/,/ka/), tongue pressure, mas-ticatory function, and swallowing function were evaluated as indicators of oral hypofunction. Grip strength, gait speed, and skeletal muscle mass index were measured as diagnostic sarcopenia parameters. The association between oral hypofunction and sarcopenia was examined via logistic regression using sarcopenia as the dependent variable. Oral hypofunction prevalence was 50.5% overall, 40.3% in men, and 54.9% in women. The prevalence of sarcopenia was 18.6% overall, 9.7% in men, and 22.5% in women. A logistic regression showed oral hypofunction, age, body mass index, higher-level functional capacity, and serum albumin level were significantly associated with sarcopenia. Sarcopenia occurred at an increased frequency in patients diagnosed with oral hypofunction (odds ratio: 1.59, 95% confidence interval: 1.02–2.47); accordingly, oral hypofunction appears to be significantly associated with sarcopenia.

Prospective Associations of Physical Frailty With Future Falls and Fear of Falling: A 48-Month Cohort Study

2021 ◽  
Author(s):  
K Makino ◽  
S Lee ◽  
S Bae ◽  
I Chiba ◽  
K Harada ◽  
...  
Keyword(s):  
Older Adults ◽  
Cohort Study ◽  
Fear Of Falling ◽  
Community Dwelling ◽  
Cardiovascular Health Study ◽  
Physical Frailty ◽  
Frailty Status ◽  
Community Dwelling Older Adults ◽  
The Relationship

Abstract Objective The present study aimed to examine the prospective associations of physical frailty with future falls and fear of falling (FOF) among community-dwelling older adults. Methods A prospective cohort study with a 48-month follow-up was conducted in a Japanese community. Participants were 2469 community-dwelling older adults aged 65 years or older who completed baseline and follow-up assessments at intervals of 48±2 months. Primary outcomes were recent falls (defined as at least one fall within the past year) and FOF (determined by response to “Are you afraid of falling?”) at follow-up survey. Physical frailty, operationalized by the frailty phenotype (slowness, weakness, exhaustion, weight loss, and low activity) based on the criteria of the Japanese version of the Cardiovascular Health Study (J-CHS), was also assessed as a predictor of future falls and FOF. Results Multivariate logistic regression showed that pre-frailty or frailty increase the risk of not only future falls (OR: 1.57; 95%CI = 1.20-2.05) but also FOF (OR: 1.33; 95%CI = 1.05-1.69). In addition, the relationship between baseline frailty status and future falls remained significant after adjusting for baseline FOF (OR: 1.55; 95%CI = 1.19-2.02), and the relationship between baseline frailty status and future FOF also remained significant after adjusting for baseline falls (OR: 1.32; 95%CI = 1.04-1.68). Conclusions Frailty status may predict future falls and FOF among community-dwelling older adults. Strategies to prevent frailty may be beneficial to prevent not only future falls but also future FOF in a community setting. Impact Falls and FOF have a close relationship but a different clinical meaning. Older adults with physical frailty may require monitoring as high-risk not only for falls but also for FOF.

scholarly journals Changes in Objectively Measured Lifestyle Factors During the COVID-19 Pandemic in Community-Dwelling Older Adults

2021 ◽  
Author(s):  
Takuya Ataka ◽  
Noriyuki Kimura ◽  
Atsuko Eguchi ◽  
Etsuro Matsubara
Keyword(s):  
Physical Activity ◽  
Older Adults ◽  
Sedentary Time ◽  
Vigorous Physical Activity ◽  
Wearable Sensors ◽  
Lifestyle Factors ◽  
Community Dwelling ◽  
Activity Level ◽  
Objectively Measured ◽  
Community Dwelling Older Adults

Abstract Background: In this manuscript, we aimed at investigating whether objectively measured lifestyle factors, including walking steps, sedentary time, amount of unforced physical activity, level of slight and energetic physical activity, conversation time, and sleep parameters altered before and during the COVID-19 pandemic among community-dwelling older adults.Methods: Data were obtained from a prospective cohort study conducted from 2015 to 2019 and a subsequent dementia prevention study undertaken in September 2020. Community-dwelling adults aged ≥65 years wore wearable sensors before and during the pandemic.Results: A total of 56 adults were enrolled in this study. The mean age was 74.2±3.9 years, and 58.9% (n=33) of the participants were female. The moderate and vigorous physical activity time significantly decreased and sedentary time significantly increased during the pandemic. Conclusions: This is the first study to demonstrate differences in objectively assessed lifestyle factors before and during the COVID-19 pandemic among community-dwelling older adults. The findings show that the pandemic has adversely affected physical activity among older adults living on their own in Japan.

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