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Abstract：
Physical activity (PA) is an important predictor of physical and mental health preventing chronic degenerative diseases. The purpose of this study was to investigate in a group of Italian high school students whether health-related quality of life (HRQoL) and lifestyle habits (diet) are associated with the level of physical activity performed (low, moderate, high). Data were collected from 2819 adolescents (n = 951 males). HRQoL was analyzed using the Italian version of the KIDSCREEN-52. Physical activity level was analyzed using the PAQ-A, while eating habits with KIDMED. Practicing physical activity in general improves HRQoL. Specifically, adolescents practicing moderate or high PA, in single dimensions of HRQoL, showed better mood (p < 0.001), self-perception (p < 0.001), family relationships (p < 0.001), reported a higher perception of socioeconomic status (p < 0.05), relationship with peers (p < 0.001), and social acceptance (p < 0.001). High PA subjects reported increased physical (p < 0.001) and mental health (p < 0.001), increased autonomy (p < 0.001), and school learning (p < 0.001). For lifestyle habits, practicing moderate PA showed higher adherence tox the Mediterranean diet (p < 0.001). Conclusion: Our results highlighted a positive association between the frequency of PA levels, some dimensions of HRQoL, and risk behaviors. These findings demonstrated the protective role of sports not only as a preventive strategy for the onset of chronic degenerative diseases, but also as an educator of healthy lifestyle habits, thus suggesting the importance and need to implement strategies to promote sports practice.
摘要：
身体活动（PA）是预防慢性退行性疾病的身心健康的重要预测指标。这项研究的目的是在一组意大利高中生中调查与健康相关的生活质量（HRQoL）和生活习惯（饮食）是否与进行的体育锻炼水平（低，中度,高)。数据来自2819名青少年（n=951名男性）。使用KIDSCREEN-52的意大利语版本分析HRQoL。使用PAQ-A分析身体活动水平，而与KIDMED的饮食习惯。通常，进行体育锻炼可以改善HRQoL。具体来说,青少年练习中等或高PA，在HRQoL的单个维度中，表现出更好的情绪（p<0.001），自我感知(p<0.001)，家庭关系（p<0.001），报告对社会经济地位的感知更高(p<0.05)，与同龄人的关系(p<0.001)，和社会接受度(p<0.001)。高PA受试者报告身体（p<0.001）和心理健康（p<0.001）增加，自主性增强(p<0.001)，和学校学习(p<0.001)。对于生活习惯，服用中度PA对地中海饮食的依从性更高（p<0.001）。结论：我们的结果强调了PA水平的频率之间的正相关，HRQoL的某些维度，和冒险行为。这些发现证明了运动的保护作用不仅是慢性退行性疾病发作的预防策略，也是健康生活习惯的教育者，从而提出了促进体育实践的重要性和实施策略的必要性。
