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.

Objective : Football, as the most viewed event in stadiums overflowed with very many spectators, has turned into the most popular sport across the world. The purpose of this study was to compare the factors affecting the technical and ethical performance of professional football athletes off-field. Methodology : The research method of this research is descriptive survey implemented by completing a researcher-made questionnaire. The statistical population of the study included all athletes, referees, and coaches, members of the technical staffs and members of professional soccer clubs as well as members of the federation and football board of Tehran during the 18 th round of the country premier league. The research sample was 384 people who were selected by purposeful sampling method and according to Morgan table. The validity of the questionnaire was evaluated by the professors of physical education and football experts and the reliability level was calculated to be 0.89 based on the Cronbach's alpha that was done by Exploratory Factor Analysis and Friedman test by SPSS version 24 and Liserl 8.8 software. Results: The present study was surveyed on the basis of effective factors off-field, that is the most important factors off-field were federation and family and the status of the club were the least important factor in the technical and ethical performance of professional football athletes. Conclusions: Supervision and education can play an important role, and family as the first social unit can be also of importance in this respect. After family, the FFIRI should take basic measures for culture-building and detailed reflections on its activities.