College of Sports Science, Shenyang Normal University, Shenyang, 110034, China.
Laboratory of Sports and Exercise Medicine, Korea Maritime & Ocean University, Busan, 49112, Korea.
Sci Rep. 2024 Jun 12;14(1):13544. doi: 10.1038/s41598-024-64389-7.
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.
本研究旨在探讨不同类型的身体活动（PA）对日本幼儿体能（PF）的影响，特别关注用积极行为替代久坐行为（SB）如何影响 PF。我们对来自日本东北地区的 1843 名 3-6 岁儿童进行了横断面分析。使用三轴加速度计来量化 PA，通过标准化测试来评估 PF。创新应用等时替代模型（ISM）使我们能够分析从 SB 重新分配时间到更活跃状态（即中等到剧烈体力活动 [MVPA] 和轻体力活动 [LPA]）的影响。我们的研究结果表明，MVPA 的增加与 PF 结果的改善之间存在紧密关联，这凸显了减少 SB 的健康益处。值得注意的是，用 LPA 替代 SB 对某些 PF 指标也显示出有益的效果，表明 LPA 在幼儿体能方面的潜在作用。这些结果突出了在幼儿中促进 MVPA 和减少久坐时间以增强 PF 的至关重要性。该研究为制定公共卫生政策提供了重要的见解，并强调了从早期开始培养积极生活方式以确保长期健康优势的必要性。
