Aims: Physical activities, as well as diet, are known as the truest scientific methods to reduce the signs of the cardio-vascular diseases. The aim of this study was to investigate the effects of 8-week aerobic trainings and green tea supplementation on some of the cardio-vascular risk factors in the obese inactive women. Materials & Methods: In the semi-experimental study, 40 obese inactive women, who were residents of Mashhad Township, were studied in 2015. The subjects, selected via purposeful available sampling method, were randomly divided into 4 groups (n=10 per group). The groups were green tea, aerobic training, aerobic training and green tea supplementation, and control groups. 8week training program consisted of three 45-to 60-minute sessions per week. Green tea was consumed by green tea group three times a day after each meal. The composed group underwent both interventions, while control group underwent no intervention. Data was analyzed by SPSS 15 software using correlated T test and one-way ANOVA. Findings: Mean total cholesterol level was significantly changed in green tea, aerobic training, and composed groups in the posttest stage compared to the pretest stage (p<0.05). Mean triglyceride level was significantly changed in green tea and aerobic training groups in the posttest stage compared to the pretest stage (p<0.05). Mean low density lipoprotein was significantly changed in green tea and composed groups in the posttest stage compared to the pretest stage (p<0.05). Mean high-density lipoprotein was significantly changed only in aerobic group in posttest stage compared to the pretest stage (p<0.05). In addition, mean concentration of C-reactive protein was significantly reduced in aerobic training (p=0.01) and composed (p=0.04) groups. Conclusion: 8 weeks aerobic training, green tea consumption, and their composition reduce the cardiovascular risk factors in inactive obese women in a relatively similar manner.
Background and objectives: Studies have shown that exercise can affect hormone secretion and some metabolic and endocrine functions. The aim of this study was to assess the effect of eight weeks of aerobic training on thyroid hormones and quality of life in obese postmenopausal women. Methods: In this semi-experimental study, 21 obese (body mass index >30 Kg/m 2) women aged between 35 and 45 were randomly divided into an experimental (n=10) group and a control group (n=11). The subjects in the experimental group performed 30-60 minutes of aerobic exercise at 65-75% of maximum heart rate, three times a week, for eight weeks. Level of thyroid hormones and quality of life subscales were compared within and between the groups. Statistical analysis was performed at significance level of 0.05. Results: After the eight-week exercise program, thyroxine, triiodothyronine and thyrotropin releasing hormone levels increased significantly, and thyroid releasing hormone level decreased significantly (P=0.001). The exercise program also had significantly positive effects on quality of life and its occupational, sexual and emotional subscales in obese postmenopausal women. Conclusion: Aerobic exercise causes a significant increase in levels of thyroxine, triiodothyronine and thyrotropin releasing hormone and some subscales of quality of life. It also causes a significant decrease in thyroid releasing hormone level, which indicates the effect of exercise on hormone secretion.
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