درخت حوزه‌های تخصصی

Background and Purpose: Overweight and obesity in childhood are associated with the potential risk of cardiovascular disease and metabolic syndrome in adulthood. The purpose of this study was to investigate the effect of 12 weeks of moderate endurance training on lipid profile and body composition of overweight girls. Material and Method: The present study was semi-experimental with pre-test and post-test design, in which 19 overweight girls aged 8 to 12 were randomly selected. Before and after intervention, body composition of subjects was measured under fasting conditions by BODY LOGIC BODY FAT ANALYZER and biochemical indices were measured and recorded by enzyme-calorimetric method. Results: Statistical analysis showed that 12 weeks of endurance training resulted in a significant reduction in triglycerides levels (p<0.025) and body fat percentage (p<0.002), while no significant change was found in cholesterol serum levels and body mass index. Conclusions: The findings of this study suggested that moderate intensity endurance training lead to improvement of body composition and biochemical parameters related to obesity in overweight girls, which reflected the vital role of these training in preventing obesity and related cardiovascular diseases among children and adolescents.

Purpose: Cell homeostasis is an essential factor in maintaining cellular health and intracellular mechanisms, which can also be associated with inflammatory factors and increased stress for muscle cell health. Calcium is also a necessary factor in cell health and is to establish homeostasis in the body . This study aimed to investigate the effect of high-intensity training on serum calcium levels in combat women. Method: For this purpose, 18 women karateka in the age range of 17 to 23 years were randomly divided into 2 groups: control (n=7) and exercise ((n=11). The exercise group performed proper exercises to improve karate and aerobic techniques for 6 weeks in the intensities of more than 80% of the maximum heart rate reserve.  Physiological indices and blood samples were measured 24 hours before and 48 hours after the training protocol.  To measure calcium cell biomarker, the Pars Azmoon calcium kit was used.  Research data were analysed by covariance test at the significant level (P≤0.05) using SPSS software version 25 . Results: After six weeks of high-intensity training, there was a significant difference in serum calcium levels in the exercise group compared to the control group (P = 0.002).  Also, the results within the group showed a significant increase in serum calcium (P = 0.016) in the exercise group compared to baseline conditions. Conclusions: High intensity training seems to increase serum calcium in female athletes, and this can lead to precursors to cellular disorders, muscle damage and increase inflammatory factors and ultimately decrease the performance of female athletes. However, more research is essential in this regard .