PDF(Pubmed)
Abstract：
This study investigates the effects of different types of physical activity (PA) on the physical fitness (PF) of young children in Japan, with a particular focus on how substituting sedentary behavior (SB) with active behaviors influences PF. We conducted a cross-sectional analysis of 1843 participants aged 3-6 years from northeastern Japan. Using triaxial accelerometers, we quantified PA, and PF was assessed via standardized tests. The innovative application of isotemporal substitution modeling (ISM) allowed us to analyze the impact of reallocating time from SB to more active states, specifically moderate-to-vigorous physical activity (MVPA) and light physical activity (LPA). Our findings reveal a robust association between increased MVPA and enhanced PF outcomes, underscoring the health benefits of reducing SB. Notably, replacing SB with LPA also showed beneficial effects on certain PF metrics, indicating LPA\'s potential role in early childhood fitness. These results highlight the critical importance of promoting MVPA and minimizing sedentary periods to bolster PF in young children. The study offers vital insights for shaping public health policies and emphasizes the need to cultivate an active lifestyle from an early age to secure long-term health advantages.
摘要：
本研究调查了日本不同类型的体育锻炼（PA）对幼儿体质（PF）的影响，特别关注用主动行为代替久坐行为(SB)如何影响PF。我们对日本东北部3-6岁的1843名参与者进行了横断面分析。使用三轴加速度计，我们量化了PA，和PF通过标准化测试进行评估。等时替代模型（ISM）的创新应用使我们能够分析将时间从SB重新分配到更活跃状态的影响，特别是中等至剧烈的体力活动（MVPA）和轻度体力活动（LPA）。我们的研究结果表明，MVPA增加和PF结果增强之间存在密切的关联，强调减少SB的健康益处。值得注意的是,用LPA代替SB也显示出对某些PF指标的有益影响，表明LPA在儿童早期健身中的潜在作用。这些结果凸显了促进MVPA和最大程度地减少久坐时间以增强幼儿PF的至关重要性。该研究为制定公共卫生政策提供了重要见解，并强调需要从小培养积极的生活方式，以确保长期的健康优势。
