Graduate School of Sport Sciences, Waseda University, Saitama, Japan.
Faculty of Health Sciences, University of Human Arts and Sciences, Saitama, Japan.
PLoS One. 2018 Apr 16;13(4):e0195384. doi: 10.1371/journal.pone.0195384. eCollection 2018.
Subjective cognitive complaints (SCC) might be a meaningful indicator of dementia onset or mild cognitive impairment, and identifying the related factors of SCC could contribute to preventing these diseases. However, the relationship between SCC and lifestyle factors remains largely unproven. The purpose of this study was to examine the association of type of sedentary behavior, physical activity, or their combination with SCC among community-dwelling older adults. In 2016, 6677 community-living elderly were recruited to participate in a survey investigating cognition, physical activity, and sedentary behavior. In total, 5328 participants responded to the questionnaire (79.8% valid response rate). SCC was assessed using the National Functional Survey Questionnaire (Kihon checklist). The relationships between SCC and physical activity, sedentary behavior (reading books or newspapers, and television viewing), or combined physical activity and sedentary behavior were examined via multiple logistic regression analysis. The analysis revealed that moderate-to-vigorous physical activity (≥150 min/week) was significantly related with a lower risk of SCC (odds ratio [OR] = 0.85; 95% confidence interval [CI] = 0.74-0.97), and that reading behavior showed a dose-response relationship with SCC (OR for 10-20 min/day = 0.63; 95% CI = 0.53-0.75; OR for 20-30 min/day = 0.59; 95% CI = 0.49-0.71; OR for ≥30 min/day = 0.47; 95% CI = 0.39-0.57). In addition, among those reporting high physical activity and ≥30 min/day for reading time, the OR for SCC was 0.40 (95% CI = 0.32-0.50) compared with the combined group reporting lower physical activity and non-readers. The present study shows that increased physical activity and reading time may be related to a reduced risk for SCC among community-dwelling older adults.
主观认知主诉 (SCC) 可能是痴呆症发病或轻度认知障碍的一个有意义的指标，识别 SCC 的相关因素有助于预防这些疾病。然而，SCC 与生活方式因素之间的关系在很大程度上仍未得到证实。本研究旨在研究社区居住的老年人中，不同类型的静坐行为、身体活动或两者的组合与 SCC 之间的关系。2016 年，招募了 6677 名社区居住的老年人参与一项调查认知、身体活动和静坐行为的调查。共有 5328 名参与者回答了问卷（有效应答率为 79.8%）。SCC 使用国家功能调查问卷（Kihon 清单）进行评估。通过多项逻辑回归分析，研究了 SCC 与身体活动、静坐行为（阅读书籍或报纸和看电视）或两者结合的关系。分析表明，中等到剧烈的身体活动（≥150 分钟/周）与 SCC 的风险降低显著相关（比值比 [OR] = 0.85；95%置信区间 [CI] = 0.74-0.97），阅读行为与 SCC 呈剂量反应关系（每天阅读 10-20 分钟的 OR = 0.63；95%CI = 0.53-0.75；每天阅读 20-30 分钟的 OR = 0.59；95%CI = 0.49-0.71；每天阅读≥30 分钟的 OR = 0.47；95%CI = 0.39-0.57）。此外，在报告高身体活动和每天阅读时间≥30 分钟的人群中，SCC 的 OR 为 0.40（95%CI = 0.32-0.50），与报告较低身体活动和不阅读的综合组相比。本研究表明，增加身体活动和阅读时间可能与社区居住的老年人 SCC 风险降低有关。
