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Background: Physical inactivity is a major public health concern worldwide. Leisure time is an important domain of physical activity that draws the attention of researchers due to its voluntary characteristic. Understanding the barriers that prevent individuals to be engaged in leisure time physical activity should be an ongoing concern that has the potential to lead to better strategies and interventions to promote physical activity in the populations. Objectives: This study explored perceived barriers to leisure time physical activity (LTPA) in Brazilian adults living in a midsize city. Methods: A total of 1213 adults were evaluated on barriers to LTPA. LTPA was assessed using the section four of the International Physical Activity Questionnaire. Barriers were assessed using a list of 22 factors that prevent individuals engaging in LTPA. Results: Women, insufficiently active men and women, and low incoming individuals reported a higher number of barriers in average compared to their counterparts. Lack of time and feeling too lazy presented the strongest association with being inactive during leisure time. Conclusions: Understanding factors related to physical inactivity can help authorities in creating strategies, and developing effective health promotion programs.
Childhood obesity seems to be increasing at a disturbing rate. Exercise and diet are recommended to combat this epidemic. Light and moderate physical activity is associated with health benefits, whereas intense physical activity is associated with normal BMI and low cardiovascular risk. The aim of this study was to assess the metabolic response to a graded exercise test (GXT) in children with different body weight. Eight boys and nine girls underwent a GXT on a treadmill according to Blake protocol. These children were 7-9 years old. The participants were divided into three groups according to their body weight: normal-weight, overweight, and obese. After GXT, lactate and HDL levels increased significantly in all three groups (p < 0.05). In this experimental trial, we show that HDL level increased after a single session of intense exercise in children regardless of body weight.
Schools are a key
setting for promoting physical activity in children. There is little evidence
on the potential of widely implemented programs to improve the quality of
physical education (PE). The aim was to assess the effects of a short training
course for classroom teachers on the quality of PE, assessed as activity time
during PE. A quasi-experimental study was conducted with 6 intervention (N = 86) and 13 control classes (N = 151). Schools
were selected in a random procedure (26.9% participation). Participation
in children was 86.2% (mean age 7.8 years, 48.9% girls). Physical activity
was assessed objectively using accelerometers. Effect on time spent in
sedentary, moderate, vigorous and moderate-to-vigorous (MVPA) activities, steps
and counts/minute during PE were analysed using t-tests and mixed linear
models. Physical activity time increased significantly in the intervention but
not in the control group between baseline and follow-up (relative increase in
moderate-to-vigorous physical activity of 12% in intervention group). Increases
were strongest in girls and in children inactive at baseline. In the mixed
linear models adjusted for clustering, the effects were significant in girls
for vigorous activities, sedentary time and counts/minute, in inactive
children for steps. Results indicate that a short training course for classroom
teachers can have subtle positive effects on physical activity time during PE.
Girls and the most inactive children at baseline profited most from the