Does creatine supplementation affect renal function in patients with peripheral artery disease? A randomized, double blind, placebo-controlled, clinical trial

Ribeiro Domingues, Wagner Jorge, Ritti-Dias, Raphael Mendes, Cucato, Gabriel, Wolosker, Nelson, Zerati, Antonio Eduardo, Puech-Leão, Pedro, Nunhes, Pollyana Mayara, Moliterno, Andre Alberto and Avelar, Ademar (2020) Does creatine supplementation affect renal function in patients with peripheral artery disease? A randomized, double blind, placebo-controlled, clinical trial. Annals of Vascular Surgery, 63. pp. 45-52. ISSN 0890-5096

[img] Text
ribeirodomingues2019.pdf - Accepted Version
Restricted to Repository staff only until 26 September 2020.
Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0.

Download (981kB) | Request a copy
Official URL: https://doi.org/10.1016/j.avsg.2019.07.008

Abstract

BACKGROUND: Case studies and reviews have shown that creatine supplementation can affect kidney function.

OBJECTIVE: The objective of this study was to verify the effects of eight weeks of creatine supplementation on renal function (creatinine clearance - primary outcome) in patients with symptomatic peripheral arterial disease.

METHODS: Twenty-nine patients, of both genders, were randomized (1:1) in a double-blind manner for administration of Placebo (PLA, n=15) or creatine monohydrate (Cr, n = 14). The supplementation protocol consisted of 20g/day for one week divided into four equal doses (loading phase), followed by single daily doses of 5g in the subsequent seven weeks (maintenance phase). Before and after the supplementation period, markers of renal function, serum creatinine, creatinine excretion rate, and creatinine clearance were evaluated. The Generalized Estimation Equation Model was used for comparison between groups. The level of significance was P <0.05.

RESULTS: No significant differences were found between groups before and after the intervention for serum creatinine (Cr - pre 1.00 ± 0.15 ml/dl vs. post 1.07 ± 0.16 ml/dl; PLA pre 1.30 ± 0.53 ml/dl vs. post 1.36 ± 0.47 ml/dl, p = 0.590), creatinine excretion rate (Cr - pre 81.73 ± 43.80 mg/dl vs. post 102.92 ± 59.57 mg/dl; PLA pre 74.37 ± 38.90 mg/dl vs. post 86.22 ± 39.94 mg/dl, p = 0.560), or creatinine clearance (Cr pre 108 ± 59 ml.min-1.1.73 m-2 vs. post 117 ± 52 ml.min-1.1.73 m-2; PLA pre 88 ± 49 ml.min-1.1.73 m-2 vs. post 82 ± 47 ml.min-1.1.73 m-2, p = 0.366).

CONCLUSIONS: Eight weeks of creatine supplementation is safe and does not compromise the renal function of patients with peripheral arterial disease.

Item Type: Article
Uncontrolled Keywords: Peripheral arterial disease, dietary supplements, safety, renal insufficiency
Subjects: A300 Clinical Medicine
B400 Nutrition
Department: Faculties > Health and Life Sciences > Sport, Exercise and Rehabilitation
Depositing User: Elena Carlaw
Date Deposited: 06 Nov 2019 11:55
Last Modified: 10 Mar 2020 16:00
URI: http://nrl.northumbria.ac.uk/id/eprint/41380

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics