scholarly journals Evaluating Additional Aspects of Muscle Function with a Digital Handgrip Dynamometer and Accelerometer for Cognitive Functioning in Older Adults: A Pilot Study

2020 ◽  
Vol 4 (1) ◽  
pp. 495-499
Author(s):  
Lukus Klawitter ◽  
Sean J. Mahoney ◽  
Lindsey Dahl ◽  
Kyle J. Hackney ◽  
Stephen D. Herrmann ◽  
...  
Keyword(s):  
Older Adults ◽  
Cognitive Function ◽  
Pilot Study ◽  
Cognitive Functioning ◽  
Force Control ◽  
Muscle Function ◽  
Grip Force ◽  
Handgrip Strength ◽  
Poor Cognitive Function

Handgrip dynamometers are used to assess handgrip strength (HGS), and low HGS is linked to poor cognitive function. Although HGS is a reliable measure of muscle function, it is only measuring maximal grip force. Other aspects of muscle function such as force control, fatigability, and steadiness are unaccounted for in current HGS protocols. This pilot study sought to determine the role of maximal HGS, submaximal HGS force control, HGS fatigability, and HGS neuromuscular steadiness on cognitive function in older adults. Our findings indicate that these additional HGS measurements could factor into detecting poorer cognitive functioning, while also evolving HGS protocols.

scholarly journals Examining Additional Aspects of Muscle Function with a Digital Handgrip Dynamometer and Accelerometer in Older Adults: A Pilot Study

Geriatrics ◽  
2020 ◽  
Vol 5 (4) ◽  
pp. 86
Author(s):  
Sean Mahoney ◽  
Lukus Klawitter ◽  
Kyle J. Hackney ◽  
Lindsey Dahl ◽  
Stephen D. Herrmann ◽  
...  
Keyword(s):  
Older Adults ◽  
Pilot Study ◽  
Grip Strength ◽  
Force Control ◽  
Muscle Function ◽  
Handgrip Strength ◽  
Principal Component ◽  
Maximal Strength ◽  
The Individual ◽  
Pearson Correlations

Background: Maximal handgrip strength (HGS) could be an incomplete and unidimensional measure of muscle function. This pilot study sought to examine the relationships between maximal HGS, radial and ulnar digit grip strength, submaximal HGS force control, HGS fatigability, neuromuscular HGS steadiness, and HGS asymmetry in older adults. Methods: A digital handgrip dynamometer and accelerometer was used to collect several HGS measurements from 13 adults aged 70.9 ± 4.0 years: maximal strength, radial and ulnar digit grip strength, submaximal force control, fatigability, neuromuscular steadiness, and asymmetry. Pearson correlations determined the relationships between individual HGS measurements. A principal component analysis was used to derive a collection of new uncorrelated variables from the HGS measures we examined. Results: The individual HGS measurements were differentially correlated. Maximal strength (maximal HGS, radial digit strength, ulnar digits strength), contractile steadiness (maximal HGS steadiness, ulnar digit grip strength steadiness), and functional strength (submaximal HGS force control, HGS fatigability, HGS asymmetry, HGS fatigability steadiness) emerged as dimensions from the HGS measurements that we evaluated. Conclusion: Our findings suggest that these additional measures of muscle function may differ from maximal HGS alone. Continued research is warranted for improving how we assess muscle function with more modern technologies, including handgrip dynamometry and accelerometry.

scholarly journals Role for Physical Fitness in the Association between Age and Cognitive Function in Older Adults: A Mediation Analysis of the SABE Colombia Study

2021 ◽  
Vol 18 (2) ◽  
pp. 751
Author(s):  
Miguel Ángel Pérez-Sousa ◽  
Jesús del Pozo-Cruz ◽  
Pedro R. Olivares ◽  
Carlos A. Cano-Gutiérrez ◽  
Mikel Izquierdo ◽  
...  
Keyword(s):  
Older Adults ◽  
Cognitive Function ◽  
Physical Fitness ◽  
Cognitive Functioning ◽  
Gait Speed ◽  
Handgrip Strength ◽  
Cross Sectional Study ◽  
Cognitive Status ◽  
Cross Sectional ◽  
Speed Test

Objectives. We investigated the association between physical fitness and cognitive status. Further, we examined whether physical fitness mediates the association between cognitive functioning and aging. Design. Cross-sectional study. Setting. Urban and rural Colombian older adults. Methods. 4416 participants from the SABE study were included in the current analysis. Physical fitness was assessed with the handgrip test and the usual gait speed test. Cognitive status was evaluated through the Folstein Mini-Mental State Examination. A parallel mediation path was used to test the possible mediator role of physical fitness between aging and cognitive functioning. Results. Older adults with lower handgrip strength (HGS) were more likely to have mild-cognitive status than older adults with healthy HGS (OR = 1.53, 95% CI = 1.15; 2.02). In addition, older adults with a slower gait speed were more likely to have mild cognitive impairment (OR = 2.05, 95% CI = 1.54; 2.78). Age had an inverse relationship with cognitive function (β = −0.110, 95% CI = −0.130; −0.100) and it was also inversely associated with HGS (β = −0.003, 95% CI = −0.005; −0.002) and gait speed (β = −0.010, 95% CI = −0.011; −0.009). The indirect effects, which indicate that the effect of age on cognitive function is transmitted through mediators, showed that both gait speed (β = −0.028, 95% CI = −0.036; −0.020) and HGS (β = −0.014, 95% CI = −0.024; −0.005) were independent mediators of the detrimental effect of aging on cognitive function. Conclusions. Physical fitness mediates the effects of aging on cognitive functioning. Our findings suggest that physical activity can be a key factor to prevent cognitive deterioration during aging process.

Early Child–Parent Relationship Quality and Cognitive Function in Older Rural Chinese Adults: The Mediating Role of Educational Attainment

2021 ◽  
pp. 089826432199656
Author(s):  
Changmin Peng ◽  
Jeffrey A. Burr ◽  
Dong Yang ◽  
Nan Lu
Keyword(s):  
Older Adults ◽  
Cognitive Function ◽  
Educational Attainment ◽  
Relationship Quality ◽  
Later Life ◽  
Life Course Perspective ◽  
Early Child ◽  
Mediating Role ◽  
Parent Relationship

Objectives: Framed within a life course perspective and cognitive reserve theory, this study examined the mediating role of educational attainment for the association between child–parent relationships during childhood and cognitive function among older adults in rural China. Methods: Data were obtained from three waves of the China Health and Retirement Longitudinal Study ( N = 9809). We employed latent growth curve modeling to test the association among early child–parent relationship quality, educational attainment, and cognitive function in later life. Results: Early child–mother relationship quality was associated with the level and change in cognitive function. Early child–father relationship quality was only related to baseline cognitive function. Educational attainment mediated the relationship between early child–parent relationship quality with mothers and fathers and cognitive function. Discussion: Parental relationship experience in childhood was one distal factor related to cognitive function among older adults. The findings supported the long-term impacts of childhood conditions for later life health consequences.

Anticipatory and Reactive Grip Force Control in Patients with Alzheimer’s Disease: A Pilot Study

2021 ◽  
pp. 1-15
Author(s):  
Anna Gabriel ◽  
Carolin T. Lehner ◽  
Chiara Höhler ◽  
Thomas Schneider ◽  
Tessa P.T. Pfeiffer ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Pilot Study ◽  
Force Control ◽  
Grip Force ◽  
Object Manipulation ◽  
Step Test ◽  
Grip Force Control ◽  
Potential Biomarker ◽  
Neurological Conditions

Background: Alzheimer’s disease (AD) affects several cognitive functions and causes altered motor function. Fine motor deficits during object manipulation are evident in other neurological conditions, but have not been assessed in dementia patients yet. Objective: Investigate reactive and anticipatory grip force control in response to unexpected and expected load force perturbation in AD. Methods: Reactive and anticipatory grip force was investigated using a grip-device with force sensors. In this pilot study, fifteen AD patients and fourteen healthy controls performed a catching task. They held the device with one hand while a sandbag was dropped into an attached receptacle either by the experimenter or by the participant. Results: In contrast to studies of other neurological conditions, the majority of AD patients exerted lower static grip force levels than controls. Interestingly, patients who were slow in the Luria’s three-step test produced normal grip forces. The timing and magnitude of reactive grip force control were largely preserved in patients. In contrast, timing and extent of anticipatory grip forces were impaired in patients, although anticipatory control was generally preserved. These deficits were correlated with decreasing Mini-Mental State Examination scores. Apraxia scores, assessed by pantomime of tool-use, did not correlate with performance in the catching task. Conclusion: We interpreted the decreased grip force in AD in the context of loss of strength and lethargy, typical for patients with AD. The lower static grip force during object manipulation may emerge as a potential biomarker for early stages of AD, but more studies with larger sample sizes are necessary.

Gait Variability and Fall Risk in Older Adults: The Role of Cognitive Function

2019 ◽  
pp. 107-138 ◽  
Author(s):  
Frederico Pieruccini-Faria ◽  
Manuel Montero-Odasso ◽  
Jeffrey M. Hausdorff
Keyword(s):  
Older Adults ◽  
Cognitive Function ◽  
Fall Risk ◽  
Gait Variability

scholarly journals Sleep Onset/Maintenance Difficulties and Cognitive Function in Nondemented Older Adults: The Role of Cognitive Reserve

2012 ◽  
Vol 18 (03) ◽  
pp. 461-470 ◽  
Author(s):  
Molly E. Zimmerman ◽  
Marcelo E. Bigal ◽  
Mindy J. Katz ◽  
Adam M. Brickman ◽  
Richard B. Lipton
Keyword(s):  
Older Adults ◽  
Cognitive Function ◽  
Cognitive Reserve ◽  
Sleep Onset

Duration of Poverty and Subsequent Cognitive Function and Decline Among Older Adults in China, 2005–2018

Neurology ◽  
2021 ◽  
pp. 10.1212/WNL.0000000000012343
Author(s):  
Xuexin Yu ◽  
Wei Zhang ◽  
Lindsay C. Kobayashi
Keyword(s):  
Older Adults ◽  
Cognitive Function ◽  
Late Life ◽  
Tobit Regression ◽  
Annual Household Income ◽  
Middle Income ◽  
Healthy Longevity ◽  
Rate Of Decline ◽  
Statistical Yearbook

Objective:To investigate the relationship between late-life duration of poverty exposure and cognitive function and decline among older adults in China.Methods:Data were from 3,209 participants aged ≥64 in the Chinese Longitudinal Healthy Longevity Survey (CLHLS). Duration of poverty, defined according to urban and rural regional standards from the China Statistical Yearbook, was assessed based on annual household income from 2005-2011 (never in poverty; 1/3 of the period in poverty; ≥2/3 of the period in poverty). Cognitive function was measured by the Chinese Mini Mental State Exam (CMMSE) from 2011-2018. We used attrition-weighted, multivariable mixed-effects Tobit regression to examine the association of duration of poverty with cognitive function and rate of decline.Results:A total of 1,162 individuals (36.21%) were never in poverty over the period from 2005-2011, 1,172 (36.52%) were in poverty 1/3 of the period, and 875 (27.27%) were in poverty ≥2/3 of the period. A longer poverty duration was associated with lower subsequent CMMSE scores with a dose-response relationship (1/3 vs. never in poverty: β = -0.98; 95% CI: -1.61 to -0.35; ≥2/3 vs. never in poverty: β = -1.55; 95% CI: -2.29 to -0.81). However, a longer duration of poverty was associated with a slower rate of CMMSE score decline over time from 2011-2018.Conclusion:These findings provide valuable evidence on the role of cumulative late-life poverty in relation to cognitive health among older adults in a rapidly urbanizing and aging middle-income country. Our findings may support a compensation hypothesis for cognitive reserve in this setting.

Edentulism and Trajectories of Cognitive Functioning Among Older Adults: The Role of Dental Care Service Utilization

2019 ◽  
Vol 32 (7-8) ◽  
pp. 744-752 ◽  
Author(s):  
Sae Hwang Han ◽  
Bei Wu ◽  
Jeffrey A. Burr
Keyword(s):  
Older Adults ◽  
Cognitive Decline ◽  
Cognitive Functioning ◽  
Service Utilization ◽  
Dental Care ◽  
Care Service ◽  
Health Care Expenditures ◽  
Self Report ◽  
Dental Services

Objective: This study examined the associations between edentulism, dental care service utilization, and cognitive functioning trajectories among older adults. Method: Longitudinal data from the Health and Retirement Study (2006-2014) were employed to examine individuals aged 51 and older who were identified as having normal cognition at baseline ( N = 12,405). Cognitive functioning was measured with a modified version of the Telephone Interview for Cognition Status. Edentulism was self-reported as total tooth loss at baseline. Dental care service utilization was measured by self-report of having visited a dentist at least once during the previous 2 years. Results: The results indicated that edentulism and dental care service utilization were independently associated with cognitive decline during the observation period. Findings also showed that dental care service utilization moderated the association between edentulism and cognitive decline. Discussion: The findings suggested that providing access to dental services may promote cognitive health and potentially reduce health care expenditures.

scholarly journals COGNITIVE DECLINE AMONG OLDER ADULTS IN RURAL CHINA: THE PROTECTIVE ROLE OF FORMAL SCHOOLING

2019 ◽  
Vol 3 (Supplement_1) ◽  
pp. S205-S206
Author(s):  
Yaolin Pei ◽  
Bei Wu ◽  
Zhen Cong ◽  
Mengyao Hu
Keyword(s):  
Older Adults ◽  
Cognitive Decline ◽  
Cognitive Functioning ◽  
Formal Education ◽  
Multilevel Models ◽  
Life Experience ◽  
Sampling Strategy ◽  
Later Life ◽  
Formal Schooling

Abstract Evidence shows that education is strongly associated with cognitive functioning; however, few studies have examined the effect of education on cognitive decline among older adults with very limited education. Our study analyzed six waves of panel data (2001, 2003 2006, 2009, 2012 and 2015) from the Longitudinal Study of Older Adults in Anhui Province, China. We estimated two-level multilevel models of cognitive functioning for older adults age 60+, sampled using probability sampling strategy. We found that having formal schooling was positively associated with better cognitive functioning. Older adults with formal schooling had slower decline in cognition and the gap in cognition between the literate and illiterate widened with age. These findings highlight the role of early life experience in affecting cognitive function in later life and suggest that disadvantages in cognitive functioning accumulate throughout the life course for persons with no formal education.

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