scholarly journals Nutrition and Sarcopenia: A Review of the Evidence and Implications for Preventive Strategies

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Siân Robinson ◽  
Cyrus Cooper ◽  
Avan Aihie Sayer
Keyword(s):  
Muscle Mass ◽  
Independent Living ◽  
Later Life ◽  
Older Age ◽  
Muscle Loss ◽  
Preventive Strategies ◽  
Physical Capability ◽  
Age Related ◽  
Adequate Quality ◽  
A Current

Prevention of age-related losses in muscle mass and strength is key to protecting physical capability in older age and enabling independent living. To develop preventive strategies, a better understanding is needed of the lifestyle factors that influence sarcopenia and the mechanisms involved. Existing evidence indicates the potential importance of diets of adequate quality, to ensure sufficient intakes of protein, vitamin D, and antioxidant nutrients. Although much of this evidence is observational, the prevalence of low nutrient intakes and poor status among older adults make this a current concern. However, as muscle mass and strength in later life are a reflection of both the rate of muscle loss and the peak attained in early life, efforts to prevent sarcopenia also need to consider diet across the lifecourse and the potential effectiveness of early interventions. Optimising diet and nutrition throughout life may be key to preventing sarcopenia and promoting physical capability in older age.

Late-onset caloric restriction alters skeletal muscle metabolism by modulating pyruvate metabolism

2015 ◽  
Vol 308 (11) ◽  
pp. E942-E949 ◽  
Author(s):  
Chiao-nan (Joyce) Chen ◽  
Shang-Ying Lin ◽  
Yi-Hung Liao ◽  
Zhen-jie Li ◽  
Alice May-Kuen Wong
Keyword(s):  
Energy Metabolism ◽  
Muscle Mass ◽  
Mitochondrial Biogenesis ◽  
Muscle Metabolism ◽  
Muscle Loss ◽  
Aged Rats ◽  
Middle Aged ◽  
Pyruvate Metabolism ◽  
Age Related ◽  
Age Dependent

Caloric restriction (CR) attenuates age-related muscle loss. However, the underlying mechanism responsible for this attenuation is not fully understood. This study evaluated the role of energy metabolism in the CR-induced attenuation of muscle loss. The aims of this study were twofold: 1) to evaluate the effect of CR on energy metabolism and determine its relationship with muscle mass, and 2) to determine whether the effects of CR are age dependent. Young and middle-aged rats were randomized into either 40% CR or ad libitum (AL) diet groups for 14 wk. Major energy-producing pathways in muscles, i.e., glycolysis and mitochondrial oxidative phosphorylation (OXPHOS), were examined. We found that the effects of CR were age dependent. CR improved muscle metabolism and normalized muscle mass in middle-aged animals but not young animals. CR decreased glycolysis and increased the cellular dependency for OXPHOS vs. glycolysis in muscles of middle-aged rats, which was associated with the improvement of normalized muscle mass. The metabolic reprogramming induced by CR was related to modulation of pyruvate metabolism and increased mitochondrial biogenesis. Compared with animals fed AL, middle-aged animals with CR had lower lactate dehydrogenase A content and greater mitochondrial pyruvate carrier content. Markers of mitochondrial biogenesis, including AMPK activation levels and SIRT1 and COX-IV content, also showed increased levels. In conclusion, 14 wk of CR improved muscle metabolism and preserved muscle mass in middle-aged animals but not in young developing animals. CR-attenuated age-related muscle loss is associated with reprogramming of the metabolic pathway from glycolysis to OXPHOS.

scholarly journals Diet quality in late midlife is associated with faster walking speed in later life in women, but not men: findings from a prospective British birth cohort

2019 ◽  
Vol 123 (8) ◽  
pp. 913-921 ◽  
Author(s):  
Thanasis G. Tektonidis ◽  
Shelly Coe ◽  
Patrick Esser ◽  
Jane Maddock ◽  
Sarah Buchanan ◽  
...  
Keyword(s):  
Sex Differences ◽  
Diet Quality ◽  
Walking Speed ◽  
Later Life ◽  
Healthy Eating Index ◽  
Healthy Diet ◽  
Linear Regression Models ◽  
Physical Capability ◽  
Age Related ◽  
Late Midlife

AbstractHealthy diet has been linked to better age-related functioning, but evidence on the relationship of diet quality in late midlife and measures of physical capability in later life is limited. Research on potential sex differences in this relationship is scarce. The aim was to investigate the prospective association between overall diet quality, as assessed by the Healthy Eating Index-2015 (HEI-2015) at 60–64 years and measures of walking speed 7 years later, among men and women from the Insight 46, a neuroscience sub-study of the Medical Research Council National Survey of Health and Development. Diet was assessed at 60–64 years using 5-d food diaries, from which total HEI-2015 was calculated. At 69–71 years, walking speed was estimated during four 10-m walks at self-selected pace, using inertial measurement units. Multivariable linear regression models with sex as a modifier, controlling for age, follow-up, lifestyle, health/social variables and physical performance, were used. The final sample consists of 164 women and 167 men (n 331). Women had higher HEI-2015 and slower walking speed than men. A 10-point increase in HEI-2015 was associated with faster walking speed among women (B 0·024, 95 % CI 0·006, 0·043), but not men. The association remained significant in the multivariable model (B 0·021, 95 % CI 0·003, 0·040). In women, higher diet quality in late midlife is associated with faster walking speed. A healthy diet in late midlife is likely to contribute towards better age-related physical capability, and sex differences are likely to affect this relationship.

Abstract 036: The Association between Mid-Life Cardiorespiratory Fitness and Dementia in Later Life

Circulation ◽  
2012 ◽  
Vol 125 (suppl_10) ◽  
Author(s):  
Laura DeFina ◽  
Benjamin Willis ◽  
Ang Gao ◽  
Nina Radford ◽  
David Leonard ◽  
...  
Keyword(s):  
Cardiorespiratory Fitness ◽  
Lower Risk ◽  
Later Life ◽  
Older Age ◽  
Outcome Variable ◽  
Administrative Claims ◽  
Men And Women ◽  
Fitness Level ◽  
Metabolic Equivalents ◽  
Age Related

Introduction: Prior literature suggests that higher levels of physical activity are associated with a lower risk for Alzheimer disease and related dementias (ADRD). However, the association between cardiorespiratory fitness (CRF) in healthy, middle aged adults and ADRD decades later in older age has not been studied. Methods: We included 20,195 participants (21.0% female, mean age 49.8 years, and free of vascular disease at baseline) enrolled in the Cooper Center Longitudinal Study (CCLS) between 1970 and 2009. CRF was measured by modified Balke protocol and treadmill time was used to estimate metabolic equivalents (METs) and to stratify CRF into low-, intermediate-, and high-fit categories. Baseline data from the CCLS were matched with Medicare administrative claims data from the Center for Medicare and Medicaid Services (CMS). The primary outcome variable was the diagnosis of ADRD as defined by CMS validated algorithms. We used a Cox proportional hazard model to estimate the association between midlife fitness and the development of ADRD in later life. All models were multivariable-adjusted for age, BMI, hypertension, diabetes, hyperlipidemia, and smoking. Results: After more than 120,000 person-years of Medicare exposure, there were 1964 ADRD cases. As expected, we observed marked differences in the age-related prevalence of ADRD (age 70 1.19% vs. age 90 15.68%). In both men and women, higher midlife fitness was associated with a lower risk (per MET) for ADRD decades later [HR 95% CI: 0.96 (0.93–0.99) in men; 0.91 (0.86–0.98) in women]. Findings were similar when fitness was examined according to categories (high vs. low) but with wider confidence intervals in women [0.81 (0.70–0.95) in men; 0.76 (0.57–1.03) in women]. The figure illustrates dementia-free survival by fitness level for men and women. Conclusions: Higher mid-life CRF was associated with a lower risk of developing ADRD decades later in older age.

scholarly journals Patterns of changing residential preferences during late adulthood

2018 ◽  
Vol 39 (8) ◽  
pp. 1752-1781 ◽  
Author(s):  
EVA K. ANDERSSON ◽  
MARIANNE ABRAMSSON ◽  
BO MALMBERG
Keyword(s):  
Independent Living ◽  
Economic Status ◽  
Geographical Area ◽  
Age Groups ◽  
The Elderly ◽  
Older Age ◽  
Late Adulthood ◽  
Close Link ◽  
Housing Preferences ◽  
Age Related

ABSTRACTEarlier research on residential mobility has demonstrated a tendency for the young old of the 55+ population to prefer peripheral locations, whereas older age groups choose central locations. Here, we present survey results indicating that such late-adulthood differences in preferences are supported by age-related shifts corresponding to differences in housing preferences expressed by individuals in peripheral as well as central locations in Sweden. A sample of 2,400 individuals aged 55 years and over was asked to select the seven most important characteristics of a dwelling from a list of 21 alternatives (Survey of Housing Intentions among the ELDerly in Sweden (SHIELD), 2013). The preferences expressed were used as dependent variables in logistic regressions to determine to what extent the housing preferences of older people are linked to age, gender, socio-economic status and type of geographical area. The results demonstrated a close link between neighbourhood characteristics and housing preferences. Owning the dwelling, having a garden and access to nature were stressed as important by individuals living in non-metropolitan middle-class areas and in suburban elite areas. The youngest cohort expressed similar preferences. Older age groups instead stressed the importance of an elevator, single-storey housing and a good design for independent living; preferences that have similarities to those expressed by individuals living in large cities and smaller urban centres where such housing is more readily available.

scholarly journals Changes in Redox Signaling in the Skeletal Muscle with Aging

2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
Péter Szentesi ◽  
László Csernoch ◽  
László Dux ◽  
Anikó Keller-Pintér
Keyword(s):  
Oxidative Stress ◽  
Skeletal Muscle ◽  
Muscle Mass ◽  
Driving Forces ◽  
Force Production ◽  
Production Quality ◽  
Muscle Loss ◽  
Muscle Stem Cells ◽  
Age Related ◽  
And Function

Reduction in muscle strength with aging is due to both loss of muscle mass (quantity) and intrinsic force production (quality). Along with decreased functional capacity of the muscle, age-related muscle loss is associated with corresponding comorbidities and healthcare costs. Mitochondrial dysfunction and increased oxidative stress are the central driving forces for age-related skeletal muscle abnormalities. The increased oxidative stress in the aged muscle can lead to altered excitation-contraction coupling and calcium homeostasis. Furthermore, apoptosis-mediated fiber loss, atrophy of the remaining fibers, dysfunction of the satellite cells (muscle stem cells), and concomitant impaired muscle regeneration are also the consequences of increased oxidative stress, leading to a decrease in muscle mass, strength, and function of the aged muscle. Here we summarize the possible effects of oxidative stress in the aged muscle and the benefits of physical activity and antioxidant therapy.

The Biological Clock and Sleep in the Elderly

2006 ◽  
Vol 19 (1) ◽  
pp. 45-51 ◽  
Author(s):  
Myriam Juda ◽  
Mirjam Münch ◽  
Anna Wirz-Justice ◽  
Martha Merrow ◽  
Till Roenneberg
Keyword(s):  
Circadian Rhythms ◽  
Biological Clock ◽  
The Elderly ◽  
Early Morning ◽  
Behavioral Changes ◽  
Older Age ◽  
Age Related ◽  
Theoretical Considerations ◽  
Sleep Difficulties ◽  
Circadian Biology

Abstract: Among many other changes, older age is characterized by advanced sleep-wake cycles, changes in the amplitude of various circadian rhythms, as well as reduced entrainment to zeitgebers. These features reveal themselves through early morning awakenings, sleep difficulties at night, and a re-emergence of daytime napping. This review summarizes the observations concerning the biological clock and sleep in the elderly and discusses the documented and theoretical considerations behind these age-related behavioral changes, especially with respect to circadian biology.

scholarly journals A Biomarker-based Biological Age in UK Biobank: Composition and Prediction of Mortality and Hospital Admissions

2021 ◽  
Author(s):  
Mei Sum Chan ◽  
Matthew Arnold ◽  
Alison Offer ◽  
Imen Hammami ◽  
Marion Mafham ◽  
...  
Keyword(s):  
Principal Components ◽  
Hospital Admissions ◽  
Later Life ◽  
Chronological Age ◽  
Uk Biobank ◽  
Hand Grip ◽  
Cox Proportional Hazard ◽  
Prediction Of Mortality ◽  
Age Related ◽  
Cox Proportional Hazard Models

Abstract Background Chronological age is the strongest risk factor for most chronic diseases. Developing a biomarker-based age and understanding its most important contributing biomarkers may shed light on the effects of age on later-life health and inform opportunities for disease prevention. Methods A subpopulation of 141 254 individuals healthy at baseline were studied, from among 480 019 UK Biobank participants aged 40–70 recruited in 2006–2010, and followed up for 6–12 years via linked death and secondary care records. Principal components of 72 biomarkers measured at baseline were characterized and used to construct sex-specific composite biomarker ages using the Klemera Doubal method, which derived a weighted sum of biomarker principal components based on their linear associations with chronological age. Biomarker importance in the biomarker ages was assessed by the proportion of the variation in the biomarker ages that each explained. The proportions of the overall biomarker and chronological age effects on mortality and age-related hospital admissions explained by the biomarker ages were compared using likelihoods in Cox proportional hazard models. Results Reduced lung function, kidney function, reaction time, insulin-like growth factor 1, hand grip strength, and higher blood pressure were key contributors to the derived biomarker age in both men and women. The biomarker ages accounted for >65% and >84% of the apparent effect of age on mortality and hospital admissions for the healthy and whole populations, respectively, and significantly improved prediction of mortality (p < .001) and hospital admissions (p < 1 × 10−10) over chronological age alone. Conclusions This study suggests that a broader, multisystem approach to research and prevention of diseases of aging warrants consideration.

scholarly journals Sexuality in Later Life and Mental Health Among Older Black Gay Men

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 313-314
Author(s):  
Darlingtina Esiaka ◽  
Alice Cheng ◽  
Candidus Nwakasi
Keyword(s):  
Mental Health ◽  
Gay Men ◽  
Later Life ◽  
The United States ◽  
Mental Wellbeing ◽  
Self Identity ◽  
Sexual Identities ◽  
Age Related ◽  
Wide Range ◽  
Black Gay Men

Abstract Self-acknowledgement and integration of racial and sexual identities are significant to one’s overall sense of identity because of their implications for mental health and wellbeing. These issues are important as one ages because older people experience a wide range of factors that add layers to their ability to (re)integrate subsets of their identity into their overall self-identity such as age and age-related disabilities. This study examined the intersection of race and sexual identities on overall health status in older Black gay men, a demographic group that has historically received less attention. Data from the Social Justice Sexuality (SJS) survey of LGBTQ+ people of color which occurred over a 12-month period in the United States were analyzed. Participants (N=160), 50 years and over, responded to questions about their sexuality, social identity, family dynamics, community connection and engagement, and mental and physical health. Results show an association of mental wellbeing with racial and sexual identities. Further, results show that a strong sense of connection to other sexual minorities is positively associated with mental health in older Black gay men. We discuss the implication of findings for mental health interventions targeting this gendered population.

scholarly journals Molecular Mechanism and Pathogenesis of Sarcopenia: An Overview

2021 ◽  
Vol 22 (6) ◽  
pp. 3032
Author(s):  
Anna Picca ◽  
Riccardo Calvani
Keyword(s):  
Skeletal Muscle ◽  
Molecular Mechanism ◽  
Muscle Mass ◽  
Skeletal Muscle Mass ◽  
Strength Function ◽  
Age Related

Sarcopenia involves a progressive age‐related decline of skeletal muscle mass and strength/function [...]

scholarly journals Molecular and phenotypic analysis of rodent models reveals conserved and species-specific modulators of human sarcopenia

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Anastasiya Börsch ◽  
Daniel J. Ham ◽  
Nitish Mittal ◽  
Lionel A. Tintignac ◽  
Eugenia Migliavacca ◽  
...  
Keyword(s):  
Muscle Mass ◽  
Inflammatory Responses ◽  
Molecular Data ◽  
Model Organisms ◽  
Sequencing Data ◽  
Phenotypic Analysis ◽  
Age Related ◽  
Analogous Data ◽  
Species Specific ◽  
And Function

AbstractSarcopenia, the age-related loss of skeletal muscle mass and function, affects 5–13% of individuals aged over 60 years. While rodents are widely-used model organisms, which aspects of sarcopenia are recapitulated in different animal models is unknown. Here we generated a time series of phenotypic measurements and RNA sequencing data in mouse gastrocnemius muscle and analyzed them alongside analogous data from rats and humans. We found that rodents recapitulate mitochondrial changes observed in human sarcopenia, while inflammatory responses are conserved at pathway but not gene level. Perturbations in the extracellular matrix are shared by rats, while mice recapitulate changes in RNA processing and autophagy. We inferred transcription regulators of early and late transcriptome changes, which could be targeted therapeutically. Our study demonstrates that phenotypic measurements, such as muscle mass, are better indicators of muscle health than chronological age and should be considered when analyzing aging-related molecular data.

Sign in / Sign up

Export Citation Format

Share Document