Acute Antioxidant Response to Two Types of Exercises: 2000 M Run vs. Burpee Test.

Physical activity results in oxidative stress, as evidenced by the increased production of reactive oxygen, nitrogen species, and inflammatory mediators. The management of these components is instrumental for antioxidant adaptation to exercise and post-exercise recovery. Therefore, the present report aims to study the antioxidant response to two types of exercise (a 2000 m run and a burpee test) in healthy volunteers after a long period of inactivity (1-2 months). Antioxidant enzyme activities and oxidative stress markers (protein carbonyls and malondialdehyde content) were measured in neutrophils, peripheral blood mononuclear cells, and plasma. These parameters were determined under basal conditions and immediately post-exercise. Compared to those in basal state, neutrophil superoxide dismutase (28.3 vs. 22.9 pkat/109 cells), glutathione peroxidase (147.5 vs. 120.1 nkat/109 cells), and catalase (106.3 vs. 57.9 k/109 cells) were activated significantly (p < 0.05) after the burpee test. Peripheral blood mononuclear cells exhibited only significant (p < 0.05) catalase activation (113.6 vs. 89.4 k/109 cells) after the burpee test. Other enzymes, such as glutathione reductase and myeloperoxidase, tended to increase post-exercise, although the differences from baseline were not significant. Finally, compared to basal conditions, the protein carbonyl (24.5 vs. 14.5 mmol/L) and malondialdehyde (39.6 vs. 18.3 mmol/L) contents increased significantly (p < 0.05) in neutrophils and in plasma (115.1 vs. 97.8 and 130.2 vs. 123.4 µmol/L, respectively) after the burpee test. In conclusion, high-intensity exercise seems to induce immediate oxidative stress in inactive individuals, and the acute antioxidant response was slightly greater after the burpee test than after the 2000 m run. Glutathione-dependent antioxidant systems are activated immediately as protective mechanisms.

Modulation of Oxidative Stress and Antioxidant Response by Different Polyphenol Supplements in Five-a-Side Football Players.

Oxidative stress is associated with playing soccer. The objective of the present report was to study the influence of different polyphenolic antioxidant-rich beverages in five-a-side/futsal players. The study was performed with a no supplemented control group (CG) and two supplemented groups with an almond-based beverage (AB) and the same beverage fortified with Lippia citriodora extract (AB + LE). At day 22, participants played a friendly futsal game. Blood extractions were performed at the beginning of intervention (day 1), before and after match (day 22) to determine oxidative stress markers and antioxidant enzyme activities in plasma, neutrophils and peripheral blood mononuclear cells (PBMCs). Malondialdehyde increased significantly in controls after the match in neutrophils, PBMCs and plasma compared to pre-match. Protein carbonyls also increased after the match in plasma in CG. In addition, malondialdehyde levels in neutrophils were significantly lower in the supplemented groups compared to controls. Post-match samples showed significant increases in neutrophil antioxidant activities in CG. Supplemented groups displayed variable results regarding neutrophil antioxidant activities, with superoxide dismutase activity significantly lower than in controls. Finally, post-match myeloperoxidase activity increased significantly in controls compared to pre-match and supplemented groups. In conclusion, polyphenolic antioxidant and anti-inflammatory supplements could be instrumental for optimal recovery after high intensity futsal games.

Antioxidant Supplementation Modulates Neutrophil Inflammatory Response to Exercise-Induced Stress.

The aim of the present report was to evaluate the inflammatory response to a 2000-m running test considering neutrophil myeloperoxidase as an inflammatory marker, and to verify if supplements rich in antioxidants could modulate Post-test antioxidant and anti-inflammatory responses. To this end, a 21-day homogenization period was carried out with three groups: a control group, a supplemented group taking an almond beverage enriched with vitamins C and E and a third group consuming the same beverage but enriched with Lippia citriodora extract. At the end of this period, participants performed a 2000-m run, and blood samples were obtained the day before and immediately after the running test. Plasma and neutrophils were isolated. As a result, plasma creatine kinase and myoglobin increased, indicating Post-test muscle damage. Plasma oxidative markers were increased in all groups, except in the group supplemented with the almond beverage. Neutrophil antioxidant enzymes were significantly increased only in the control group, suggesting an antioxidant effect of the supplements provided in the other groups. Myeloperoxidase activity was significantly increased after the test in the control group, while increased enzyme levels were detected in plasma of the supplement groups. Therefore, antioxidant consumption seems to favour myeloperoxidase release. The connection of this observation with post-exercise recovery will require further investigation.

Erythrocytes and Skeletal Muscle Unsaturated and Omega-6 Fatty Acids Are Positively Correlated after Caloric Restriction and Exercise.

BACKGROUND: Nutritional intervention studies with fatty acid (FA) supplements assess the efficacy of the intervention by measuring the changes in erythrocyte membrane lipid profiles reflected in tissue composition changes. The aim was to determine the effects of caloric restriction (CR) on erythrocytes lipid composition and to compare and correlate these changes with skeletal muscle acid profiles after CR. METHODS: Erythrocytes were obtained from 11 healthy men before and after 4 weeks of 33% CR in post-exercise conditions; muscle biopsies were obtained from the same athletes after 4 weeks of 33% CR in post-exercise conditions. Samples were used for FA determination by chromatography. RESULTS: CR significantly modified erythrocyte FAs composition. Skeletal muscle FA profile was significantly different from that for the erythrocytes. The erythrocyte FA profile was more saturated (52.1 ± 1.5% and 32.8 ± 0.9%, respectively) and less monounsaturated (21.0 ± 0.8% and 39.0 ± 2.0%, respectively) than the skeletal muscle FA profile and similarly polyunsaturated. CONCLUSIONS: CR modifies erythrocyte lipid composition, mainly omega-6 FAs. Erythrocyte monounsaturated, polyunsaturated and omega-6 FAs, but not the saturated and omega-3 FAs, were significantly positively correlated with skeletal muscle FAs. There is a discordance between saturated and omega-3 FAs from erythrocyte and from muscle, but monounsaturated, polyunsaturated and omega-6 fatty acids are positively correlated.

Metabolic syndrome prevalence among Northern Mexican adult population.

BACKGROUND AND AIMS: Dietary habits in the Mexican population have changed dramatically over the last few years, which are reflected in increased overweight and obesity prevalence. The aim was to examine the prevalence of metabolic syndrome (MetS) and associated risk factors in Northern Mexican adults aged ≥ 16 years. METHODS AND RESULTS: The study was a population-based cross-sectional nutritional survey carried out in the State of Nuevo León, Mexico. The study included a sub-sample of 1,200 subjects aged 16 and over who took part in the State Survey of Nutrition and Health-Nuevo León 2011/2012. Anthropometric measurements, physical activity, blood pressure and fasting blood tests for biochemical analysis were obtained from all subjects. The prevalence of MetS in Mexican adults aged ≥ 16 years was 54.8%, reaching 73.8% in obese subjects. This prevalence was higher in women (60.4%) than in men (48.9%) and increased with age in both genders. Multivariate analyses showed no evident relation between MetS components and the level of physical activity. CONCLUSIONS: Obese adults, mainly women, are particularly at risk of developing MetS, with the associated implications for their health. The increasing prevalence of MetS highlights the need for developing strategies for its early detection and prevention.

Self-perceived factors associated with smoking cessation among primary health care nurses: a qualitative study / Tabagismo em enfermeiras de cuidados primários à saúde: um estudo qualitativo / Tabaquismo en enfermeras de Atención Primaria: un estudio cualitativo

The aim of this work was to characterize the views of nurses about factors modulating smoking cessation. Results of this study will allow us to design helping interventions with the maximum specificity for nurses. A qualitative study through a semi-structured interview of 15 Primary Health Care nurses who were smokers was performed. In contrast with other studies in which nurses were not aware of any particular social pressure to give up smoking, 18 months after the application of the Anti-Smoking Spanish Law, this feeling was expressed. Therefore, the main reasons for giving up smoking include that smoking in public is every day worse seen, together with a sense of shame and guilt in front of their social and family environment, especially for being a professional group dedicated to health.

O objetivo deste estudo foi identificar os fatores percebidos por enfermeiras fumantes como facilitadores ao abandono do tabagismo, com o propósito de, posteriormente, elaborar intervenções de ajuda com maior especificidade para esse grupo. Foi realizado estudo qualitativo, por meio de entrevistas semiestruturadas, com 15 enfermeiras de cuidados primários à saúde, que eram fumantes. Ao contrário de outros estudos, os quais as enfermeiras não percebiam pressão social para deixar o hábito tabágico, 18 meses após a vigência da Lei de Prevenção ao Tabagismo, as enfermeiras entrevistadas expressaram sentir pressão social. Portanto, entre os principais motivos para abandonar o hábito tabágico é que, a cada dia, fumar em público é malvisto, e está aliado a sentimentos de vergonha e culpa no seu entorno social e familiar, principalmente por se tratar de um grupo profissional dedicado aos cuidados da saúde.

El objetivo de este trabajo fue identificar los factores percibidos por las enfermeras fumadoras como moduladores del cese tabáquico, con el fin de diseñar posteriormente intervenciones de ayuda con la máxima especificidad para este colectivo. Se realizó un estudio cualitativo mediante entrevista semiestructurada a 15 enfermeras fumadoras de Atención Primaria de Salud. Contrariamente a otros estudios en los que las enfermeras no percibían una especial presión social para dejar el hábito tabáquico, 18 meses después de vigencia de la Ley de Prevención del Tabaquismo sí que la expresan. Por ello, entre los principales motivos de cese figura el que cada día esté peor considerado fumar en público, unido a un sentimiento de vergüenza y de culpa ante su entorno social y familiar, especialmente por tratarse de un colectivo profesional dedicado a los cuidados de salud.

Self-perceived factors associated with smoking cessation among primary health care nurses: a qualitative study.

The aim of this work was to characterize the views of nurses about factors modulating smoking cessation. Results of this study will allow us to design helping interventions with the maximum specificity for nurses. A qualitative study through a semi-structured interview of 15 Primary Health Care nurses who were smokers was performed. In contrast with other studies in which nurses were not aware of any particular social pressure to give up smoking, 18 months after the application of the Anti-Smoking Spanish Law, this feeling was expressed. Therefore, the main reasons for giving up smoking include that smoking in public is every day worse seen, together with a sense of shame and guilt in front of their social and family environment, especially for being a professional group dedicated to health.