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EN
Introduction: Although practicing physical activity according to recommendations has health benefits, many studies have reported that the level of participation is lower than recommended. Methods: In this behavioural epidemiological study, we used a correlational design to determine the contribution made by physical education (PE) classes to daily physical activity in a sample of 694 Spanish adolescents. Physical activity levels were determined using the Four by One-Day Physical Activity Questionnaire. Results: 65.1% of adolescents comply with the recommendations on PE school days, compared to 36.6% who do so on the days with no PE class. Moreover, on PE school days, they obtain significantly higher physical activity level scores compared to days with no PE class. Conclusion: The study, therefore, shows the fundamental role of PE in increasing daily physical activity levels. Proposals to improve physical activity levels in these adolescents should be put forward, with educational centres being one of the best settings to achieve this goal.
EN
The aim of this study was to verify the effects of programmed and self-selected physical activities on the physical fitness of adolescents. High school adolescents, aged between 15 and 17 years, were divided into two experimental groups: a) a self-selected physical activity group (PAS) with 55 students (aged 15.7 ± 0.7 years), who performed physical activities with self-selected rhythm at the following sports: basketball, volleyball, handball, futsal and swimming; and b) a physical fitness training group (PFT) with 53 students (aged 16.0 ± 0.7 years), who performed programmed physical fitness exercises. Both types of activity were developed during 60 min classes. To assess physical fitness the PROESP-BR protocol was used. The statistical analysis was performed by repeated measures ANOVA. The measurements of pre and post-tests showed significantly different values after PFT in: 9 minute running test, medicine ball throw, horizontal jump, abdominal endurance, running speed and flexibility. After PAS differences were detected in abdominal endurance, agility, running speed and flexibility. The intervention with programmed physical activity promoted more changes in the physical abilities; however, in the self-selected program, agility was improved probably because of the practice of sports. Therefore, physical education teachers can use PFT to improve cardiorespiratory fitness and power of lower and upper limbs and PAS to improve agility of high school adolescents.
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