SARC-F and the Risk of Falling in Middle-Aged and Older Community-Dwelling Postmenopausal Women

SARC-F: an effective screening tool for detecting sarcopenia and predicting health-related quality of life in older women in Sri Lanka

OBJECTIVE

The "Strength, Assistance with walking, Rise from a chair, Climb stairs, and Falls" (SARC-F) is a simple, five-item tool used to identify individuals with suggestive signs of sarcopenia. This study assessed the validity of the Sinhala version of the SARC-F, evaluating its ability to detect sarcopenia in older women and its potential to predict health-related quality of life (HRQoL).

METHODS

The culturally adapted Sinhala version of the SARC-F, along with the Short Form-36 (SF-36) survey, was administered among 350 older women (aged ≥ 65) attending medical clinics at National Hospital Galle, Sri Lanka. Handgrip strength (HGS) was measured using a handheld dynamometer, and relative appendicular skeletal muscle mass index (RSMI) was estimated with a Sri Lankan-specific anthropometry-based equation. Gait speed (GS) was assessed using 4-m customary-paced walk test.

RESULTS

The mean (± SD) age of the participants was 72 (± 5) years, with 56.3% (n = 197) having sarcopenia based on a SARC-F score of ≥ 4. The Sinhala version of SARC-F demonstrated a good internal consistency (Cronbach's alpha = 0.72). A significant positive correlation between SARC-F and HGS indicated concurrent validity (r = 0.23, p < 0.001). Women with sarcopenia had significantly lower HRQoL scores, HGS and GS compared to those without, confirming discriminant validity (p < 0.01). The sensitivity, specificity, and accuracy of the Sinhala SARC-F were 54.8%, 67.3%, and 60.3%, respectively, with an Area Under the Curve (AUC) of 0.61 (95% CI: 0.55-0.67) in detecting probable sarcopenia. The HRQoL domains of SF-36 (excluding emotional well-being), HGS and GS were inversely correlated with SARC-F (Spearman's rho range: -0.19 to -0.56, p < 0.001). SARC-F significantly associated with the physical function and pain domains of SF-36 explained 42% of the variance in the model (r = 0.65, R2 = 0.42).

CONCLUSIONS

The Sinhala version of SARC-F is a reliable and valid tool for screening sarcopenia in Sinhala-speaking older women in Sri Lanka. It can be integrated into clinical practice to identify those with suggestive signs of sarcopenia and to predict HRQoL enabling timely interventions. Future studies with larger, more diverse populations, including men, are needed to enhance the tool's generalizability and diagnostic accuracy.

Application of a new definition of sarcopenic obesity in middle-aged and older adults and association with cognitive function: Findings from the National Health and Nutrition Examination Survey 1999-2002

BACKGROUND & AIMS

The role of sarcopenic obesity (SO) in impaired cognitive function has been investigated in several observational studies, but results have been mixed. This study applied the proposed European Society for Clinical Nutrition and Metabolism (ESPEN)-European Association for the Study of Obesity (EASO) definition of SO to a representative population aged ≥50 years to identify the association between SO and cognitive function.

METHODS

Data from the National Health and Nutrition Examination Survey 1999-2002 waves were used. At the screening phase, body mass index or waist circumference were used to evaluate obesity; sarcopenia was identified using the SARC-F questionnaire. At the diagnostic phase I and II, sarcopenia was assessed using knee extensor isometric strength and appendicular lean mass, and fat mass percent was used to assess obesity. Cognitive function in older participants (60-85 years) was assessed using the Digit Symbol Substitution Test. A self-reported memory question was used in middle-aged individuals (50-59 years).

RESULTS

The sample included 2356 participants (men, 44.7%). The prevalence of SO was 32.3%, 21.2% and 15.0% at the screening, diagnosis I, and diagnosis II, respectively. Significant associations between SO and cognitive impairment were observed in individuals aged 60-85 at diagnosis I (OR: 2.3, 95%CI 1.4-3.8, P = 0.007) and diagnosis II (OR: 2.7, 95%CI 1.5-4.9, P = 0.004).

CONCLUSION

The new ESPEN-EASO definition of SO identified a high prevalence of SO cases. A significant association between SO and poor cognitive function in older individuals was observed.

Poor sleep health predicts the onset of a fear of falling among community-dwelling older adults

INTRODUCTION

A greater fear of falling predicts disability, falls, and mortality among older adults. Although poor sleep has been identified as a relevant risk factor for fear of falling among older adults, evidence is primarily shown in cross-sectional studies using isolated sleep characteristics. Less is known about whether prior fall experiences change the sleep health-fear of falling link among older adults. We investigated the longitudinal relationship between sleep health and the incidence of fear of falling among community-dwelling older adults and how the association differed between those with or without prior fall experiences.

METHODS

Data were from individuals who completed the sleep module in the National Health and Aging Trends Study (2013-2014; n = 686). Fear of falling was assessed with a single item. Multidimensional sleep health was measured with self-reported sleep items based on the SATED model (ie, sleep satisfaction, daytime alertness, timing, efficiency, and duration). Covariates included sociodemographics, assistive device usage, health, risky behavior, and sleep medications. Multiple logistic regression was used to analyze the data.

RESULTS

Poor sleep health was associated with the onset of fear of falling at 1-year follow-up (odds ratios=1.20, 95% confidence interval=1.02-1.41). Moreover, poor sleep health increased the odds of having fear of falling among individuals without prior falls experiences and elevated the already heightened risks of developing fear of falling among those who fell at baseline.

CONCLUSIONS

Given that fear of falling and experiencing a fall each increase the risk of the other occurring in the future, improving sleep health may prevent older adults from stepping into the vicious cycle of fear of falling and falls.