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European Journal of Physical Education and Sport Science ISSN: 2501 - 1235 ISSN-L: 2501 - 1235 Available on-line at: www.oapub.org/edu Volume 3 │ Issue 11 │ 2017 doi: 10.5281/zenodo.893277 THE EFFECT OF 4-WEEKLY LOW INTENSITY PHYSICAL ACTIVITY PROGRAM IN THYROID HORMONE LEVELS IN OBESE AND OVERWEIGHT CHILDREN Zarife Pancar1, Mustafa Özdal1, Vedat Çinar2 Gaziantep University, Physical Education and 1 Sport Department, Gaziantep, Turkey Fırat University, Physical Education and 2 Sport Department, Elazığ, Turkey Abstract: The aim of this study is to examine the effect of 4 weeks of low intensity physical activity program on thyroid hormone levels in obese and overweight boys. A total of 27 boys in the 12-14 age range; obese group 12 and overweight group 15 were divided into two groups. Children who participated in the study during the 4 weeks 3 days a week, games and sporting selected time period of 60 minutes a day walking program applied increasingly. TSH, T3 and T4 levels were determined in blood samples taken at rest 1 day before and one day after the 4 week training program. In the statistical analysis of the data obtained in the study, SPSS package program SPSS 22.0 statistical program (SPSS Inc., Chicago, Illinois, ABD) was used. Paired Samples T tests were used to analyze the difference between the Independent Samples T and the pre-test and posttest of the groups in the comparison of the binary groups. At the end of the study, body weight and T3 values of obese subjects (n = 12) and body weight, BMI and T3 values of overweight group were found to be significantly different between pre-test and posttest (p <0.05). In the analysis of pre-test and post-test differences of measured characteristics of obese and overweight subjects, no significant difference was found (p>0,05). As a result; of obese and overweight boys in the 12-14 age range in the 4-week low intensity physical activity program it can be said to cause changes in thyroid hormone levels. Keywords: obesity, thyroid hormone, physical activity Copyright © The Author(s). All Rights Reserved. © 2015 – 2017 Open Access Publishing Group 1 Zarife Pancar, Mustafa Özdal, Vedat Çinar THE EFFECT OF 4-WEEKLY LOW INTENSITY PHYSICAL ACTIVITY PROGRAM IN THYROID HORMONE LEVELS IN OBESE AND OVERWEIGHT CHILDREN 1. Introduction Although the concept of obesity is simply defined as the result of excess energy compared to the energy consumed, genetic structure, conditions affecting energy metabolism, eating habits, and obesity resulting from the complex interaction of sociocultural factors; hypertension, cardiovascular disease, diabetes, degenerative arthritis, thrombophlebitis. It is regarded as a disease which deals with all age and socioeconomic groups with extremely serious social and psychological effects (1,2). Obesity, an epidemic health problem all over the world, also affects the pediatric age group (3). It is well known that obesity is linked to many diseases in the short and long term, and that in the majority of adult obesity, this condition extends to the childhood of the onset of the condition (4). In recent years, the relationship between obesity and thyroid function tests has attracted attention, along with an increase in the number of obese children referred to clinics for medical treatment. TSH is an important pituitary hormone that regulates thyroid gland functions, and TSH levels are a reliable index of biological activity of thyroid hormone (5). Because thyroid hormones regulate many metabolic systems related to rest energy consumption, thyroid disease it is not surprising that body weight, thermogenesis and lipolysis changes in fat tissue occur. Thyroid pathologies are also a growing endocrine problem and are often accompanied by obesity and other endocrine problems (6). In this study; The aim of this study was to investigate the effect of 4 week low intensity physical activity program on thyroid hormone levels in obese and overweight boys. For downloading the full article, please access the following link: https://oapub.org/edu/index.php/ejep/article/view/1037 European Journal of Physical Education and Sport Science - Volume 3 │ Issue 11 │ 2017 2