Resumo

MAROTO-SANCHEZ, Beatriz et al. Acute physical exercise increases homocysteine concentrations in young trained male subjects. Nutr. Hosp. [online]. 2013, vol.28, n.2, pp.325-332. ISSN 1699-5198.  https://dx.doi.org/10.3305/nh.2013.28.2.6300.

Introduction: High levels of homocysteine (Hcy) have been identified as a cardiovascular risk factor. Regarding physical exercise, the results are contradictory. Objectives: The aim of this study was to determine the influence of maximal intensity exercise and submaximal constant exercise on total serum homocysteine concentrations (tHcy) and other related parameters. Material and methods: Ten physically active male subjects (mean age: 23.51 ± 1.84), performed two treadmill tests, a maximal test and a stable submaximal test at an intensity of 65% of maximal oxygen uptake (VO_2max). Serum concentrations of tHcy, Folate, Vitamin B₁₂ and creatinine were analysed before and after each test. Results: Significant increase in serum tHcy concentrations after the maximal (p < 0.05) and submaximal (p < 0.01) tests were observed. Folate and vitamin B₁₂ concentrations also increased significantly after both tests (p < 0.05). Creatinine levels increased only after the maximal test (p < 0.001). A statistically significant inverse relationship was found between folate and tHcy concentrations (p < 0.05) at all the measurement points. Conclusion: THcy levels increased significantly after acute exercise in both maximum and submaximal intensity exercises.

Palavras-chave : Homocysteine; Exercise; Cardiovascular risk; Folate; Vitamin B₁₂.

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