Physical activity (PA) is required for healthy growth, development, and maturation and plays an important role in the prevention of overweight and obesity in childhood and adolescence. Sex-differences in PA levels are well documented, with boys spending more time in PA, especially in moderate-to-vigorous activities. Following the Life History Theory, our aim is to study if PA affects the fat tissues increases during childhood and juvenile phases in both sexes.

中文翻译：

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葡萄牙学童身体投资和体育活动策略的性别差异

身体活动 (PA) 是健康成长、发育和成熟所必需的，在预防儿童和青春期超重和肥胖方面发挥着重要作用。PA 水平的性别差异有据可查，男孩在 PA 中花费的时间更多，尤其是在中等到剧烈的活动中。遵循生命史理论，我们的目标是研究 PA 是否会影响两性在儿童期和青少年期的脂肪组织增加。