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EN
Objectives: The aim was to study the body image of Spanish children and adolescents, and the differences in body image according to the quality of diet and the physical activity performed by school children. Methods: A total of 1450 Spanish school children participated (719 boys and 727 girls), between 3 and 18 years of age (11.7 ± 2.5). The body image was measured with the Stunkard silhouettes. The quality of the diet was evaluated using the KIDMED questionnaire. Physical activity was assessed using the PACE questionnaire. Findings: Subjects who did enough physical activity and had a better quality diet had a better body image than those who did not perform physical activity and needed to improve their diet. These differences were significant (p<0.05) by level of physical activity, but not by quality of the diet. Conclusions: The results of this study showed that the quality of the diet and a regular practice of physical activity could be determining factors of body image. It is recommended to carry out intervention programs to improve diet and physical activity and, in consequence, ameliorate the body image of Spanish children and adolescents.
EN
Objectives This study examined the effects of 6-week Nordic walking (NW) workout with individually customized intensity, on the body composition, and oxidative stress biomarkers for women > 55 years of age. Material and Methods Sixteen sedentary women (age 58.1±2.02 years old, body mass index (BMI) 26.74±2.72 kg/m²) worked out the NW 3 times/week over the 6-week period. Training intensity, which reflected the dominance of oxygen metabolism, was determined based on changes in physiological indicators during graded exercise on a treadmill (walking with poles). The body composition and oxidative stress biomarkers in blood were measured before and after the exercise routine. Results After the training period, body weight, body fat percentage, body mass index and uric acid levels in serum decreased significantly (p < 0.05). At the same time the plasma total antioxidant status increased considerably (p < 0.05), while the total oxidative status and the oxidized low-density lipoproteins concentration levels did not change significantly (p > 0.05). Conclusions Within a relatively short time, the Nordic walking with the customized intensity level focused on the dominance of fat metabolism, decreased body fat and improved the blood antioxidant defense system for previously sedentary women. Int J Occup Med Environ Health 2017;30(3):445–454
EN
ObjectivesThe aim of this paper was to investigate the impact of changes in the students’ lifestyle during an examination period on their health condition, as evidenced by changes to the body composition and metabolic rates.Material and MethodsThe study involved 268 Wroclaw Medical University students (second- and third-year students). The study was performed 3 times (at the beginning of a semester, in the middle of a semester, and in the examination period) and included a completion of a questionnaire on the current lifestyle, as well as measurements of the body composition, the basal metabolic rate, and the waist and hip circumferences. The measurements were carried out with the use of a body composition analyzer (Tanita MC-780 MA) and a tape measure with a waist–hip ratio calculator.ResultsIn the examination period, as compared with the rest of the semester, a significant decrease was observed in the metabolic rates, and the body water and muscle mass of the examined students. During that period, there were also more frequent adverse changes in the students’ lifestyle. In the studied periods, a correlation was found between changes in the frequency of snacking, consuming sweets and cola drinks, and the alterations of the subjects’ body fat mass, i.e., r = 0.161, r = 0.135, and r = 0.143, respectively. In turn, differences in the frequency of drinking wine, physical activity, sleep length, and time devoted to learning correlated with changes in the participants’ body water, i.e., r = 0.140, r = 0.152, and r = 0.133 (r = −0.142, r = −0.147), respectively, and muscle mass, i.e., r = 0.141, r = 0.142, and r = 0.126 (r = −0.130, r = −0.142), respectively, and metabolism, i.e., r = 0.127, r = 0.145 and r = 0.135 (r = −0.127, r = −0.135), respectively.ConclusionsThe analysis of the body composition and metabolic rates of the students during an examination period indicates that the changes occurring in various elements of their lifestyle (e.g., dietary habits, physical activity) can result in deteriorating their health condition.
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