ObjectiveTo analyze bone mineral density (BMD) values in adolescents and to assess obesity impact, measured through body fat #x2013;on this variable through the assessment by DEXA.MethodologyA total of 318 males adolescents (12–17 years) were evaluated considering weight, height, body mass index (BMI), bone mineral density (BMD), fat and lean mass. BMD was assessed for the arms, legs, hips, and lumbar regions, as well as for total amount. Stratification of the nutritional status was determined by body fat (%BF) percentage; comparison of groups was scrutinized by analysis of variance; and the association of variables was performed using Pearson's test.ResultsThere was a progressive increase in weight, height, and BMD for all evaluated age groups following the advance of chronological age. A negative correlation was found between the %BF with BMD in all evaluated segments. Significant differences were found between the eutrophic group compared to the overweight group and the obesity group in the evaluated segments (P <0.01) noting a reduction of up to 12.92% for the lumbar region between eutrophic and obese.ConclusionThe results suggest that increase %BF is associated with lower BMD among male adolescents.

ARTIGO ORIGINAL | ORIGINAL ARTICLE RESUMO ABSTRACTThis study aimed to assess the client satisfaction with supervised services in physical education in Curitiba Metropolitan Region. A descriptive exploratory study with 921 subjects, 436 males and 485 females, with a mean age of 26.9 ± 9.4 years was conducted. The research instrument used was the Client Satisfaction Questionnaire in Physical Education Services. As main results, it was found that among the evaluated services, fitness gyms were found to be the most used service (61.9%), dance academies had higher quality and satisfaction and the average time of use of services was 25.2 ± 33.1 months, being the team sports schools those with the highest averages. It was concluded that the bodybuilding gyms have been characterized as the most used service academies, yoga/pilates academies presented the highest percentage of problems reported and dance academies achieved the highest quality of service and customer satisfaction.

Background: Physical activity is a part of a healthy lifestyle, however sedentary habits are currently prevalent among adolescents which impacts rates of overweight and obesity in this group. This study aims to describe the relationship of physical activity with the use of active transportation to school (ATS) and its relationship with body composition in adolescents. Materials and Methods: Information about physical activity, sedentary behavior and active transportation were collected through two survey instruments, one completed by a responsible parent/guardian and other by the adolescent. Body composition was assessed by dual-energy x-ray absorptiometry (DXA). Excess body fat was defined as ≥ 25% in male and ≥ 30% among female adolescents. Less than 60 minutes of moderate to vigorous daily physical activity defined one as sedentary and greater than 2 hours of screen time per day was defined as excessive. Results: The prevalence of excess body fat was 46.5%. Only 24.7% of the sample performed recommended amounts of physical activity and 92.3% engaged in excess screen time. Approximately one-fifth of our sample (19.2%) used ATS. The main barriers to active transport were traffic, distance and safety. Those that used ATS had lower body fat and fewer hours of sedentary behavior.