Vindiš Jan, Pelclová Jana, Jašková Paulína, Hron Karel
Faculty of Physical Culture, Palacký University Olomouc, Olomouc, Czech Republic.
Faculty of Science, Palacký University Olomouc, Olomouc, Czech Republic.
Sci Rep. 2025 Jul 9;15(1):24729. doi: 10.1038/s41598-025-09645-0.
This study introduces the concept of the "Goldilocks Day" - the optimal 24-hour time-use of intensity- or posture-specific composition specifically tailored for young-old (65-70 years) and old-old (> 70 years) adults. We aimed (1) to describe optimal 24-hour time-use of compositions for each health outcome, and (2) identify the 'Goldilock Day' for all outcomes together. This approach, involving backwards pivot coordinates (bpcs), we provide a clearer interpretation of physical behavior data, offering practical insights for healthy aging. Data were collected from 309 older adults (65 + years) in Czechia, using accelerometers worn on the non-dominant wrist to assess intensity-specific behaviors (sedentary behavior - SB, light physical activity - LPA, moderate-to-vigorous physical activity - MVPA, and sleep) and on the right thigh and waist to assess posture-specific behaviors (lying, sitting, standing, moving, and walking). Health outcomes included body mass index (BMI), fall risk, fear of falling, and overall physical performance as assessed by the Short Physical Performance Battery. Compositional regression models, based on the bpcs, were used to assess the relationships between time-use and these outcomes. In young-old adults, the time-use composition for optimal BMI included 7.5 h of sleep, 12.0 h of SB, 3.2 h of LPA, and 1.4 h of MVPA. Old-old adults displayed slightly lower MVPA (1.0 h) and increased SB (12.8 h). Generally, higher MVPA and lower SB were associated with better physical performance and reduced fear of falling. The optimal "Goldilocks Day" for both age groups highlighted the benefits of higher physical activity and reduced sedentary time, with significant implications for personalized health recommendations and improved health outcomes in Czech older adults.
本研究引入了“金发姑娘日”的概念——专为年轻老年人（65 - 70岁）和年长老年人（> 70岁）量身定制的、针对强度或姿势特定构成的最佳24小时时间利用方式。我们的目标是：（1）描述每种健康结果的最佳24小时时间利用构成；（2）共同确定所有结果的“金发姑娘日”。通过这种涉及反向枢轴坐标（bpc）的方法，我们对身体行为数据提供了更清晰的解释，为健康老龄化提供了实用见解。数据收集自捷克的309名老年人（65岁及以上），使用佩戴在非优势手腕上的加速度计来评估强度特定行为（久坐行为 - SB、轻度身体活动 - LPA、中度至剧烈身体活动 - MVPA和睡眠），并使用佩戴在右大腿和腰部的加速度计来评估姿势特定行为（躺卧、坐着、站立、移动和行走）。健康结果包括体重指数（BMI）、跌倒风险、跌倒恐惧以及通过简短身体性能测试评估的总体身体性能。基于bpc的构成回归模型用于评估时间利用与这些结果之间的关系。在年轻老年人中，达到最佳BMI的时间利用构成包括7.5小时睡眠、12.0小时SB、3.2小时LPA和1.4小时MVPA。年长老年人的MVPA略低（1.0小时），SB增加（12.8小时）。一般来说，较高的MVPA和较低的SB与更好的身体性能和降低的跌倒恐惧相关。两个年龄组的最佳“金发姑娘日”都突出了更高身体活动和减少久坐时间的益处，这对捷克老年人的个性化健康建议和改善健康结果具有重要意义。
