Macronutrient and mineral intake effect on racing time and cardiovascular health in non-elite marathon runners.
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Tipus de documentArticle
Data publicació2020-03-19
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Abstract
Objective: The aim of this study was to analyze, in recreational marathon runners, the intake of specific macronutrients and minerals that could influence cardiovascular health.
Methods: 37 males were grouped in two groups according to their 50% percentile race time (3.39 h), dividing into fast (G1: 3.18 ± 0.18 h) and slow runners (G2: 3.84 ± 0.42 h). Anthropometric parameters, macronutrients and mineral records were collected before the race. Minerals (Na+, K+ and Mg2+), lipid profile (triglycerides, LDL, HDL and cholesterol), muscle damage (creatine kinase), inflammation (C-reactive protein), and cardiovascular health (high-sensitive troponin-T, ST2 and N-terminal pro-B-type natriuretic peptide) were analyzed in blood 24 h before, immediately after, and 48 h post-race.
Results: Weight (G1: 74.70 ± 7.76 kg, G2: 79.58 ± 6.72 kg; p < 0.05) and body mass index (G1: 23.01 ± 1.81 kg/m2, G2: 25.30 ± 2.02 kg/m2; p < 0.01) were significantly different between the groups. Moreover, G1 consumed significantly (p < 0.01) more mono- and poly-unsaturated fatty acids than G2, and presented significantly higher iron, potassium, and magnesium intake. Regarding blood lipid profile, G2 presented significantly higher triglyceride values and lower levels of high-density lipoprotein (p < 0.01). The Hs-TnT marker of cardiac myocyte stress/injury was significantly higher (p < 0.05) in G2 reaching values above 250 ng/L, and 81% of the runners (30 from 37) presented higher post-race values.
Conclusions: Marathon runners consuming adequate amounts of unsaturated fat, iron, potassium and magnesium, performed better and presented better cardiovascular health.
CitacióRoca, E. [et al.]. Macronutrient and mineral intake effect on racing time and cardiovascular health in non-elite marathon runners.. "Nutrition", 19 Març 2020, p. 110806:1-110806:21.
ISSN0899-9007
Versió de l'editorhttps://www.sciencedirect.com/science/article/abs/pii/S0899900720300897
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