AIM: In this study we evaluated the level of oxidative stress (OS) in a population of healthy adults in relation to lifestyle and practice of physical activity. METHODS: There was selected a population of 51 subjects (35-55 years), 35 sports (regular physical activity practicing) and 16 sedentary. Body composition (body mass index, BMI; phase angle, PA; total water body, TWB; fat mass, FM) and redox state with d-ROMs test (concentration of oxidizing radicals) and with BAP test (antioxidant potential) were analyzed and correlated with subject lifestyle, including diet and physical activity. To evaluate the change in redox homeostasis due to physical activity, only in sports, the global oxidative balance before and after exercise was analysed. RESULTS: All participants, sports and sedentary, presented optimal body composition and redox state values, a low plasma concentration of radicals (mean value of d-ROMs test = 231 U-Carr) and an optimal value of antioxidant potential (BAP test average = 2355 mol / L). Despite the good redox state of the analyzed subjects it was carried out statistical analysis to assess the relationships between the OS values, the body composition parameters and information obtained from the questionnaires. The practice of regular physical activity, smoking, residence in areas with air pollution and eating habits were shown not to significantly affect the redox state in the population enrolled in the study. Otherwise a significantly lower level of radicals (p <0.01) has been detected in subjects who consumed a lot of fruit, consistent with the abundant supply of antioxidants provided by these foods. Moreover it was observed an increase in the OS with increasing age (p < 0.05) and fat mass (p < 0.05) of the subjects, while a lower level of OS was associated with a greater value of PA, an indicator of cell density and of plasma membrane functionality (p <0.001). The oxidative balance values in athletes showed a slight increase of the pro-oxidant (p > 0.05) and a significant enhancement of the antioxidant potential (p < 0.05) after practicing sport. CONCLUSIONS: The study showed a good redox balance in the analyzed population correlated to a proper lifestyle found in the most of the subjects, regardless of the practice of physical activity. The overall results show that a healthy adult population, according to a proper lifestyle, maintains an optimal redox balance. BIBLIOGRAPHY Iorio E.L. Radicali liberi e antiossidanti in medicina dello sport. Osservatorio internazionale dello stress ossidativo (2007), ww.osservatoriostressossidativo.org. Radak Z., Chung H.Y., Koltai E., Taylor A.W., Goto S. Exercise, oxidative stress and hormesis. Ageing Research Review (2008); 7: 34-42.
Oxidative stress assessment in adults in relation to physical activity and lifestyle
CARRARO, Elisabetta;SCHILIRO', Tiziana;BIORCI, FELICINA;GILLI, Giorgio
2013-01-01
Abstract
AIM: In this study we evaluated the level of oxidative stress (OS) in a population of healthy adults in relation to lifestyle and practice of physical activity. METHODS: There was selected a population of 51 subjects (35-55 years), 35 sports (regular physical activity practicing) and 16 sedentary. Body composition (body mass index, BMI; phase angle, PA; total water body, TWB; fat mass, FM) and redox state with d-ROMs test (concentration of oxidizing radicals) and with BAP test (antioxidant potential) were analyzed and correlated with subject lifestyle, including diet and physical activity. To evaluate the change in redox homeostasis due to physical activity, only in sports, the global oxidative balance before and after exercise was analysed. RESULTS: All participants, sports and sedentary, presented optimal body composition and redox state values, a low plasma concentration of radicals (mean value of d-ROMs test = 231 U-Carr) and an optimal value of antioxidant potential (BAP test average = 2355 mol / L). Despite the good redox state of the analyzed subjects it was carried out statistical analysis to assess the relationships between the OS values, the body composition parameters and information obtained from the questionnaires. The practice of regular physical activity, smoking, residence in areas with air pollution and eating habits were shown not to significantly affect the redox state in the population enrolled in the study. Otherwise a significantly lower level of radicals (p <0.01) has been detected in subjects who consumed a lot of fruit, consistent with the abundant supply of antioxidants provided by these foods. Moreover it was observed an increase in the OS with increasing age (p < 0.05) and fat mass (p < 0.05) of the subjects, while a lower level of OS was associated with a greater value of PA, an indicator of cell density and of plasma membrane functionality (p <0.001). The oxidative balance values in athletes showed a slight increase of the pro-oxidant (p > 0.05) and a significant enhancement of the antioxidant potential (p < 0.05) after practicing sport. CONCLUSIONS: The study showed a good redox balance in the analyzed population correlated to a proper lifestyle found in the most of the subjects, regardless of the practice of physical activity. The overall results show that a healthy adult population, according to a proper lifestyle, maintains an optimal redox balance. BIBLIOGRAPHY Iorio E.L. Radicali liberi e antiossidanti in medicina dello sport. Osservatorio internazionale dello stress ossidativo (2007), ww.osservatoriostressossidativo.org. Radak Z., Chung H.Y., Koltai E., Taylor A.W., Goto S. Exercise, oxidative stress and hormesis. Ageing Research Review (2008); 7: 34-42.
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