BACKGROUND: Sarcopenia and chronic kidney disease (CKD) have been associated with negative outcomes in older people, including inflammatory profile and anemia biomarkers. AIMS: To investigate the effects of pre-dialysis resistance training (RT) on sarcopenia, inflammatory profile, and anemia biomarkers in older patients with CKD. METHODS: A total of 107 patients with CKD (65.4 ± 3.7 years) were randomly allocated into four groups: sarcopenic RT (n = 37), non-sarcopenic RT (n = 20), sarcopenic control (n = 28), and non-sarcopenic control (n = 22). DXA and handgrip strength were used to classify sarcopenia according to EWGSOP-2. Treatment groups underwent a 24-week intervention with RT before each dialysis session, three times per week. Blood sample analysis for ferritin, hepcidin, iron availability, and inflammatory profile (TNFα, IL-6, and IL-10) was conducted. All-cause mortality was recorded over 5 years. RESULTS: Sarcopenic RT group increased iron availability after the intervention, while their counterparts decreased. Ferritin and hepcidin significantly decreased in sarcopenic RT group. RT elicited a reduction in both TNFα and IL-6, while increasing IL-10 in both intervention groups. The rate of sarcopenic subjects substantially decreased after the intervention period (from 37 to 17 in the RT group; p = 0.01). The proportion of deaths was higher (P = 0.033) for sarcopenic subjects (Controls 35.7% vs RT 29.7%) when compared to non-sarcopenic subjects (Controls 18% vs RT 10%). The proportion of deaths decreased according to the randomization group (X2 = 8.704; P < 0.1). CONCLUSIONS: The 24-week RT intervention elicited a better sarcopenia status, better inflammatory profile, and improved anemia biomarkers. Sarcopenia was associated with higher mortality rate in older patients with CKD.
BACKGROUND: Sarcopenia and chronic kidney disease (CKD) have been associated with negative outcomes in older people, including inflammatory profile and anemia biomarkers. AIMS: To investigate the effects of pre-dialysis resistance training (RT) on sarcopenia, inflammatory profile, and anemia biomarkers in older patients with CKD. METHODS: A total of 107 patients with CKD (65.4 ± 3.7 years) were randomly allocated into four groups: sarcopenic RT (n = 37), non-sarcopenic RT (n = 20), sarcopenic control (n = 28), and non-sarcopenic control (n = 22). DXA and handgrip strength were used to classify sarcopenia according to EWGSOP-2. Treatment groups underwent a 24-week intervention with RT before each dialysis session, three times per week. Blood sample analysis for ferritin, hepcidin, iron availability, and inflammatory profile (TNFα, IL-6, and IL-10) was conducted. All-cause mortality was recorded over 5 years. RESULTS: Sarcopenic RT group increased iron availability after the intervention, while their counterparts decreased. Ferritin and hepcidin significantly decreased in sarcopenic RT group. RT elicited a reduction in both TNFα and IL-6, while increasing IL-10 in both intervention groups. The rate of sarcopenic subjects substantially decreased after the intervention period (from 37 to 17 in the RT group; p = 0.01). The proportion of deaths was higher (P = 0.033) for sarcopenic subjects (Controls 35.7% vs RT 29.7%) when compared to non-sarcopenic subjects (Controls 18% vs RT 10%). The proportion of deaths decreased according to the randomization group (X2 = 8.704; P < 0.1). CONCLUSIONS: The 24-week RT intervention elicited a better sarcopenia status, better inflammatory profile, and improved anemia biomarkers. Sarcopenia was associated with higher mortality rate in older patients with CKD.
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