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    Long-Term Callisthenic Exercise–Related Changes in Blood Lipids, Homocysteine, Nitric Oxide Levels and Body Composition in Middle-aged Healthy Sedentary Women
    (Chinese Physiological Soc, 2012) Güzel, Nevin Atalay; Pınar, Lamia; Çolakoğlu, Filiz; Karacan, Selma; Özer, Çiğdem
    Regular physical exercise plays an important role in reducing obesity, preventing hyperglycemia, lowering blood lipids and reducing systemic blood pressure. But the question about the nature of the relationship between homocysteine, nitric oxide and physical activity remains unanswered. The aim of this study was to investigate the effects of callisthenic exercises on plasma lipids, homocysteine (Hcy), total nitric oxide (NOx) and body composition in middle-aged healthy sedentary women. Forty-two middle-aged women (ages: 28-49; mean: 41.40 +/- 7.3 years) were asked to perform a callisthenic exercise 50 min per session, 3 times per week for 12 weeks in a sports hall. Before and after the exercise, plasma lipids (total cholesterol, high density lipoprotein, low density lipoprotein and triglyceride), Hcy and NO were determined. Body composition, including body mass index, fat percentage, fat free mass, resting systolic and diastolic blood pressures and heart rates were measured. After a 12-week callisthenic exercise program, plasma NOx and Hcy levels were found to be significantly increased (P < 0.05). Body composition parameters, lipid profile, resting systolic and diastolic blood pressures and heart rate significantly decreased (P < 0.05). Aerobic callisthenic exercises characterized by 50 min/day and 3 days/week resulted in positive changes in important health parameters like reducing obesity, lowering blood lipids and increasing plasma NOx. Cardiovascular improvements might be dependent on the increase of NOx values. But callisthenic exercise in such intensity did not lower the plasma Hcy level. Moreover, Hcy level increased significantly. The result shows that if the Hcy is in the normal levels in healthy subjects, long-term callisthenic exercise do not decrease the Hcy levels despite some beneficial effects on health. On the contrary, the Hcy levels are increased by long-term callisthenic exercises.