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Background and purpose: Prevalence of over weight and obesity is increasing in the world. Those over weight are more susceptible to cardiovascular diseases than other individual's. Studies indicate that body fat distribution has a determining role in the identification of risk factors. Also, the relation between BMI, cardiac ischemic pains and exercise test condition in such patients, is in need further investigation. The aim of this study was to determine the relation between BMI with exercise tolerance test in patients with cardiac ischemic pains, who were referred to the Cardiac Center of Mazandaran Province, in Sari Township. Materials and methods: In this case control study considering the BMI in ischemic patients, 65 were selected as case and 65 persons as control using Tread mill and according to Bruce Protocol, results and tolerance test time was recorded. Independent T test was used for comparison of quantitative indexes mean, while x2 test using SPSS soft ware was used for comparison of the ratio of persons with the qualitative features. Results: Data indicated mean weight of 57.1 kg and height of 1.64m in the case group. Also, 58.5% had history of hyperlipidemia (Cholesterol higher than 200mg/dl) and 78.8% with history of blood sugar (higher than 120mg/dl (P<0.001). Even 63.6% had hypertension of 140/9o mm Hg. Our findings showed that BMI in the case and control groups were (26.95±3.94) and (25.95±3.49) respectively. Moreover, a significant relationship between high BMI with cardiac ischemic pains and exercise tolerance test (P<0.001) were demonstrated. Conclusion: Cardiac ischemic pains in individuals with high BMI is common. Exercise tolerance test as one of the non invasive and less expensive procedures, can be an indicator of cardiac ischemic disease. [ABSTRACT FROM AUTHOR]

Background and purpose: Intense and prolonged exercises generate reactive oxygen species that leads to cell damage. It seems that using antioxidant supplements reduce exercise-induced oxidative stress. The purpose of this study was to determine the effect of omega-3 supplements on oxidative stress in elite karate athletes. Materials and methods: Sixteen elite male karate athletes were randomly divided into two groups, receiving Omega-3 supplements (experimental) and placebo (control). The subjects consumed 1200 mg omega-3 (720 mg EPA and 480 mg DHA) and placebo daily for four weeks. Both groups participated in increased karate training programs (three days a week for a month). Blood samplings were performed pre and post-training period to analyze oxidative stress index (malondialdehyde), antioxidative index (superoxide dismutases), and lipid profile (cholesterol and triglycerides). The student's ttest was used to analyze the data. Results: Taking omega-3 led to a significant reduction in resting malondialdehyde levels in experimental group (t= 2.38, P= 0.045) but there was no significant change in resting malondialdehyde for the placebo group (t= 0.708, P= 0.506). Also, the resting malondialdehyde levels were not significantly different between the experimental and placebo groups (t=2, P=0.065,). Superoxide dismutases rate had no significant increase in experimental and the placebo groups (t= 0.272, P= 0.792, t=1.39, P= 0.186, respectively). There was also no significant difference between the two groups (t=1.39, P=0.186). After four weeks cholesterol concentration was significantly lower in the experimental group (t=2.97, P=0.018) while this reduction was not significant in the placebo group (t=0.694, P=0.514). Also, the difference between the two studied groups was not significant (t=1.44, P=0.172). Concentration of triglyceride significantly decreased in both groups (t=0.835, P=0.428, t=1.38, P=0.217, respectively). There was no significant difference between the two groups (t=1.04, P=0.315). Conclusion: Omega-3 supplements increased the serum levels of antioxidant biomarkers and reduced the resting levels of lipid profiles in exercise-trained men, but it was not enough for exerciseinduced attenuation in oxidative stress. Therefore, more research is needed to draw accurate conclusions regarding the effects of omega-3 and exercise on oxidant/antioxidant factors on excersise-trained people. [ABSTRACT FROM AUTHOR]