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Journal Article
Multicenter Study
Randomized Controlled Trial
Efficacy of L-carnitine supplementation for improving lean body mass and physical function in patients on hemodialysis: a randomized controlled trial.
European Journal of Clinical Nutrition 2019 Februrary
BACKGROUND: Carnitine deficiency is common in patients on hemodialysis. However, the efficacy of L-carnitine supplementation for improving lean body mass (LBM) and physical function has not yet been evaluated.
METHODS: In this multicenter, prospective, parallel, randomized, controlled trial, 91 patients on hemodialysis who developed carnitine deficiency were randomly assigned to receive injections of 1,000 mg L-carnitine 3 times per week after each hemodialysis session (L-carnitine group) or no injections (control group) with monitoring for 12 months.
RESULTS: The data for 84 of the 91 patients were available for analysis (L-carnitine group, n = 42; control group, n = 42). Dry weight and body mass index did not significantly change in the L-carnitine group, but significantly decreased in the control group. Arm muscle area (AMA) did not change significantly in the L-carnitine group but decreased significantly in the control group; the difference in mean AMA between the groups was 6.22% (95% confidence interval [CI] 1.90-10.5; P = 0.037). Hand grip strength did not change significantly in the L-carnitine group, but decreased significantly in the control group. The difference in change in hand grip strength between the groups was 4.27% (95% CI 0.42-8.12; P = 0.030). Furthermore, LBM did not change significantly in the L-carnitine group but decreased significantly in the control group; the difference in mean LBM between the groups was 2.92 % (95% CI 1.28-4.61; P = 0.0007).
CONCLUSIONS: L-carnitine supplementation is useful in patients who develop carnitine deficiency on hemodialysis because it maintains physical function and LBM.
METHODS: In this multicenter, prospective, parallel, randomized, controlled trial, 91 patients on hemodialysis who developed carnitine deficiency were randomly assigned to receive injections of 1,000 mg L-carnitine 3 times per week after each hemodialysis session (L-carnitine group) or no injections (control group) with monitoring for 12 months.
RESULTS: The data for 84 of the 91 patients were available for analysis (L-carnitine group, n = 42; control group, n = 42). Dry weight and body mass index did not significantly change in the L-carnitine group, but significantly decreased in the control group. Arm muscle area (AMA) did not change significantly in the L-carnitine group but decreased significantly in the control group; the difference in mean AMA between the groups was 6.22% (95% confidence interval [CI] 1.90-10.5; P = 0.037). Hand grip strength did not change significantly in the L-carnitine group, but decreased significantly in the control group. The difference in change in hand grip strength between the groups was 4.27% (95% CI 0.42-8.12; P = 0.030). Furthermore, LBM did not change significantly in the L-carnitine group but decreased significantly in the control group; the difference in mean LBM between the groups was 2.92 % (95% CI 1.28-4.61; P = 0.0007).
CONCLUSIONS: L-carnitine supplementation is useful in patients who develop carnitine deficiency on hemodialysis because it maintains physical function and LBM.
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