Shopping Cart

No products in the cart.

Category Sarcopenia

Sarcopenia Metrics and Quality of Life Components: What Is the Link?

Sarcopenia is known to be negatively associated with quality of life in affected patients. However, the individual impacts of its metrics, i.e. muscle mass, strength, and physical performance, on patients’ overall quality of life remain to be thoroughly investigated. This pre-printed study aimed to characterise the associations between sarcopenia metrics and quality of life outcomes in community-dwelling older adults from the SOMMA (Study of Muscle, Mobility and Aging) study. Health-related quality of life was ascertained using the EQ-5D questionnaire, which measures 5 subcomponents: mobility, self-care, usual activities, pain and discomfort, as well as anxiety and depression.

Sarcopenia and Type 2 Diabetes: A Bidirectional Relationship

Sarcopenia is characterised by age-related reductions in skeletal muscle strength, mass, and functional ability. Importantly, sarcopenia is a multifactorial condition associated with metabolic alterations, including poor glucose disposal, insulin resistance, decreased metabolic rate and, thus, type 2 diabetes (T2D). Developing non-pharmaceutical guidelines for the prevention and treatment of both diseases when they coexist is essential to optimise patient health and reduce premature mortality within this patient population. This review aimed to examine 1) the pathophysiological link between sarcopenia and T2D, and 2) lifestyle interventions with the potential to mitigate both sarcopenia and T2D.

Leucine-enriched Protein Supplementation for the Pre-frail: What Are the Benefits?

It is known that one in five adults with pre-frailty progresses to frailty over a 3-year period. Low protein and energy intake, increased prevalence of multimorbidity, and a sedentary lifestyle are well-characterised drivers of sarcopenia. Consequently, they act as catalysts of older adults’ transition to frailty. In this vein, stimulating increased muscle protein synthesis through regular physical exercise and protein-enriched diet consumption is pivotal for pre-frail older adults. Current U.S. Food and Nutrition Board guidelines recommend a dietary allowance of 0.8 g/kg of protein per day for older adults. However, this amount may be insufficient for those with pre-frailty due to their low-grade inflammation, multimorbidity, and increased susceptibility to anabolic resistance. This study aimed to examine the impact of leucine-enriched protein supplementation with or without exercise on 1) physical function, 2) body composition, and 3) systemic inflammation in pre-frail older adults with a daily protein consumption of ≤1 g/kg.

Evaluating health-related quality of life in patients with sarcopenia

The normal ageing process is accompanied by progressive declines in muscle mass and strength. Abnormal and excessive losses of skeletal muscle mass and quality emerge as a consequence of age-related musculoskeletal disorders, e.g. sarcopenia. The latter confers affected patients with increased risks of adverse outcomes, including falls, fractures, and mortality. Moreover, sarcopenic patients often exhibit higher levels of dependency and disability, both of which impact their health-related quality of life (HRQoL). HRQoL measures are well-characterised predictors of hard clinical outcomes, including hospitalisation and mortality. Accordingly, the use of sarcopenia-specific HRQoL tools in clinical practice and interventional trials is recommended by recent European Working Group on Sarcopenia in Older People (EWGSOP2) guidelines. This meta-analysis aimed to characterise the relationship between sarcopenia and patient-reported HRQoL.

GDF-15: a mediator of exercise’s link with late-life weight loss?

Ageing is often associated with appetite reduction and ensuing weight loss. Although it is known that physical activity (PA) can prevent these ageing-related processes, the exact molecular mechanisms underpinning this ability remain unknown. Recent research has highlighted the role of exerkines, i.e. proteins released during and after PA, in controlling energy metabolism. Growth differentiation factor 15 (GDF-15), a stress-signalling cytokine secreted during PA and involved in ageing, exercise, and appetite control, has emerged as a potential mediator of late-life, ageing-related weight loss. This study aimed to explore the associations between PA, GDF-15, and body weight changes in older adults enrolled in the Multidomain Alzheimer Preventive Trial over a 3-year period.

Sarcopenia, unpreparedness, and the developing world: an urgent concern?

Muscle strength has recently been defined as sarcopenia’s main component by the revised European Working Group in Sarcopenia for Older People (EWGSOP2). This shift from muscle mass to strength has had transformative implications within clinical practice and has greatly facilitated sarcopenia’s diagnostic process. Despite this trailblazing consensus, sarcopenia remains an issue of growing concern throughout high-income countries (HICs). Although low- and middle-income countries (LMICs) are disproportionately affected by the threat of sarcopenia, their care providers and healthcare systems seem to be the least prepared to tackle it. The aim of this article is to expose the state of sarcopenia awareness and management in LMICs. It further proposes solutions to prepare the developing world for this growing concern.

PIH and sarcopenia in COPD: a causal relationship?

Nocturnal hypoxia commonly occurs in patients with chronic obstructive pulmonary disease (COPD), and in this context may be referred to as prolonged intermittent hypoxia (PIH). It is estimated that 1 in 5 COPD patients also suffer from sarcopenia, which may affect both respiratory and non-respiratory skeletal muscles and be causally linked to PIH. The presentation of sarcopenia alongside COPD is known to reduce quality of life and increase both hospitalisation and mortality rates in affected patients. Despite this, the adaptive cellular responses to PIH in skeletal muscle have not yet been adequately investigated. The aim of this article was to discuss findings from a 2022 paper by Attaway and colleagues, which itself aimed to explore adaptive cellular responses to PIH.

Sarcopenia, perioperative mortality and advanced ovarian cancer: a review

All types of ovarian cancers hold a high risk of morbidity and mortality for the patients. Currently, there are many efforts to assess ovarian cancer progression, to allow for the development of accurate treatment and management plans for preventing mortality in the long-term. A physical indicator of increased vulnerability is frailty. Frailty can lead to falls, hospitalisation and increased risk of death. Generally, frailty is closely associated with poor prognosis and shorter progression-free survival in many conditions, including ovarian cancer. However, diagnosing frailty is complex, due to a lack of a set definition and due to comorbidities appearing in older patients. Although this study draws useful conclusions, its limitation holds that some confounding factors could not be adjusted for, meaning further research is needed to understand the interplay between ovarian cancer and frailty. This review by Can E et al. aimed to understand the prognostic value of frailty to predict complications and mortality in patients with ovarian cancer.

Sarcopenia and age in cancer patients: a review

Currently, medical treatment for cancer is personalised by looking at genetic and molecular factors of cancer cells. However, for characterising patients, factors such as age, weight, BMI, comorbidities, etc are used. Hence, there is no set, universal variable(s) to be used in managing cancer. It is possible that this is the reason that many anticancer drugs perform poorly clinically, due to this variability between patients. One of the factors that can be used is chronological age, which defines the patient’s accumulated damage to their system. Age is an accurate predictor of various outcomes, including the outcomes of anticancer drug therapies. For example, patients between the ages of 65-69 are often less likely to respond well to chemotherapy. A way to index age is sarcopenia, but due to the complex, varying body compositions associated with tumour growth, it is difficult to use sarcopenia consistently as an index for age in cancer management. This review by Laviano A aimed to explore variables, such as sarcopenia and ageing, in their effects on cancer and anticancer drug successes.

Exercise, nutrition, or combined interventions: which is the most effective treatment for sarcopenia?

No pharmacologic intervention has yet been approved for the treatment of sarcopenia. Only exercise and nutritional support via increased protein intake have been shown to significantly improve this condition. As such, lifestyle interventions aiming to increase physical exercise and/or protein intake are recommended for the prevention, management, and treatment of sarcopenia. The aim of this systematic review was to assess the intervention (exercise or nutrition alone, against a combination of both) best able to improve sarcopenia. This improvement was measured in older adults using the skeletal muscle index (SMI), handgrip, and gait speed.

Current sarcopenia definitions and clinical outcomes: a need for homogeneity?

Three new definitions of sarcopenia have emerged in the past four years, proposed by the Sarcopenia Definition and Outcome Consortium (2020, SDOC), the European Working Group on Sarcopenia in Older People (2019, EWGSOP2) and the Asian Working Group on Sarcopenia (2019, AWGS2). No consensus on a unique definition of sarcopenia has yet been achieved, as the three new definitions proposed exhibit significant differences from each other. EWGSOP2’s definition of sarcopenia, for instance, characterises it as low muscle strength and mass, while the one developed by SDOC focuses on low muscle strength and gait speed instead. The aim of this scoping review was to investigate all three recent sarcopenia definitions’ predictive validity for clinical outcomes.

Subscribe to the SCWD Newsletter

Stay Informed with the Latest Updates and Exclusive Insights!