Manfred Lamprecht

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The detrimental outcomes associated with unregulated and excessive production of free radicals remains a physiological concern that has implications to health, medicine and performance. Available evidence suggests that physiological adaptations to exercise training can enhance the body's ability to quench free radicals and circumstantial evidence exists to(More)
BACKGROUND Probiotics are an upcoming group of nutraceuticals claiming positive effects on athlete's gut health, redox biology and immunity but there is lack of evidence to support these statements. METHODS We conducted a randomized, double-blinded, placebo controlled trial to observe effects of probiotic supplementation on markers of intestinal barrier,(More)
PURPOSE To assess the effects of different exercise intensities and antioxidant supplementation on plasma protein modification. METHODS Trained men (n = 41) from a homogenous population were randomly assigned to perform cycle ergometer exercise either at 70% or 80% of individual .VO2max. Each intensity group was randomly assigned to receive either juice(More)
The purpose of this study was to investigate the effect of single bouts of exercise at three different intensities on the redox state of human serum albumin (HSA) and on carbonyl groups on protein (CP) concentrations in plasma. Trained men [n = 44, maximal oxygen consumption (Vo(2max)): 55 +/- 5, nonsmokers, 34 +/- 5 years of age] from a(More)
Phytonutrients from plant foods provide numerous antioxidants. We hypothesized that supplementation for 28 wk with a commercially available encapsulated juice powder concentrate (JPC) could influence indicators of oxidative stress, immunity, and illness. Trained men (n = 41; 34 +/- 5 y; maximum oxygen uptake = 55 +/- 7 mL x kg(-1) x min(-1)) from a(More)
Despite the health-promoting effects of physical activity, exercise enhances the formation of free radicals and other reactive species in animals and humans. Numerous techniques have been established to investigate the diverse modifications of biomolecules by oxidative stress. These analytical procedures include different methods, ranging from simple(More)
PURPOSE To assess the effects of an encapsulated antioxidant concentrate (EAC) and exercise on lipid peroxidation (LIPOX) and the plasma antioxidant enzyme glutathione peroxidase (Pl-GPx). METHODS Eight trained male cyclists (VO2max > 55 ml x kg(-1) x min(-1)) participated in this randomized, placebo-controlled, double-blinded, crossover study and(More)
Athletes exposed to high-intensity exercise show an increased occurrence of gastrointestinal (GI) symptoms like cramps, diarrhea, bloating, nausea, and bleeding. These problems have been associated with alterations in intestinal permeability and decreased gut barrier function. The increased GI permeability, a so-called 'leaky gut', also leads to(More)
Obesity and sedentary lifestyle are associated with increased oxidative stress, inflammation and vessel dysfunction. Previous research has shown that an encapsulated fruit/berry/vegetable juice powder (FBV) supplement or controlled exercise training improve the markers of redox biology, low-grade inflammation and circulation. The aim of the present study(More)
1Department of Physical Education and Sports Science at Serres, Aristotle University of Thessaloniki, 62110 Serres, Greece 2Department of Health, Exercise and Sport Sciences, The University of New Mexico, Albuquerque, NM 87131, USA 3Centre for Physiological Medicine, Medical University of Graz, Harrachgasse 21/II, 8010 Graz, Austria 4Department of Health,(More)