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Open AccessArticle

Prevalence and Correlates of Sarcopenia among Elderly CKD Outpatients on Tertiary Care

Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy
Department of Clinical and Biological Sciences, University of Torino, 10124 Torino, Italy
Nephrologie, CH Le Mans, 72037 Le Mans, France
Nephrology, Transplant and Dialysis Unit, AOUP, 35233 Pisa, Italy
Section of Statistics, AOUP, 56100 Pisa, Italy
Author to whom correspondence should be addressed.
Nutrients 2018, 10(12), 1951;
Received: 1 November 2018 / Revised: 27 November 2018 / Accepted: 4 December 2018 / Published: 10 December 2018
Background: Sarcopenia is a widespread concern in chronic kidney disease (CKD) as well in elderly patients and is one of the main reasons why low-protein diets for this population are controversial. The aim of this study was to assess the prevalence and correlates of sarcopenia among elderly male patients affected by CKD followed up in an outpatient nephrology clinic, where moderate protein restriction (0.6–0.8 g/Kg/day) is routinely recommended to patients in CKD stage 3b-5 not on dialysis. Methods: This observational study included 80 clinically-stable male out-patients aged >60, affected by stage 3b-4 CKD. Forty patients aged ≥75 (older seniors) were compared to the other forty patients aged 60–74 (younger seniors). All patients underwent a comprehensive nutritional and functional assessment. Results: Older seniors showed lower serum albumin, hand-grip strength, body mass index (BMI), skeletal muscle mass, and resting energy expenditure. Protein intake was significantly lower in older seniors whereas energy intake was similar. Average daily physical activity was lower in the older seniors than in the younger ones. Sarcopenia was more prevalent in older than in younger seniors. Among older seniors, sarcopenic and non-sarcopenic ones differed in age and performance on the Six-Minute Walk test, whereas the estimated glomerular filtration rate (eGFR), biochemistry, dietary protein, and energy intakes were similar. Conclusions: Older senior CKD male patients have lower muscle mass, muscle strength, and physical capacity and activity levels, with a higher prevalence of sarcopenia than younger patients. This occurs at the same residual renal function and metabolic profile and protein intake. Energy intake was at the target in both subgroups. In this CKD cohort, sarcopenia was associated with age and physical capacity, but not with eGFR or dietary intakes. View Full-Text
Keywords: CKD; aging; sarcopenia; physical performance; functional capacity; protein restriction CKD; aging; sarcopenia; physical performance; functional capacity; protein restriction
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D’Alessandro, C.; Piccoli, G.B.; Barsotti, M.; Tassi, S.; Giannese, D.; Morganti, R.; Cupisti, A. Prevalence and Correlates of Sarcopenia among Elderly CKD Outpatients on Tertiary Care. Nutrients 2018, 10, 1951.

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