臨床症状
Yi Fang1, Allysa Quick2, Sasha Milton1
1University of California, San Francisco, San Francisco, CA, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
まとめ
高齢者では、長時間の睡眠と過度の就床時間は認知機能障害のリスク増加と関連する。寝付けないことはこのリスクを低下させる可能性があり、睡眠モニタリングが高齢期における検出を助けることが示唆される。
科学分野:
- 老年医学; 睡眠医学; 神経学
背景:
- 加齢は睡眠と認知機能に影響を与える。; 睡眠障害は認知機能低下と関連している。; 最も高齢のグループにおける主観的な睡眠特性と認知機能障害との関連は、十分に研究されていない。
研究 の 目的:
- 主観的な睡眠特性と、新たに発生した認知機能障害との関連を調査すること。; 特に最も高齢の(90歳以上)グループにおけるこれらの関連を調べること。
主な方法:
- 4つの米国コホート(MAP、MARS、MrOS、SOF)の調和されたデータが分析された。; 睡眠測定には、睡眠時間、就床時間、睡眠の質、日中の眠気、睡眠困難が含まれた。; Poisson回帰を用いて、共変量を調整した後、年齢層別化されたグループにおける認知機能障害(MCI/認知症)との関連を調べた。
主要な成果:
- 90歳以上のグループでは、長時間の睡眠(8時間超)が認知機能障害のリスク増加と関連していた(RR=2.167)。; 80〜90歳のグループでは、過度の就床時間(8時間超)が認知機能障害のリスク増加と関連していた(RR=1.201)。; 睡眠困難(週3回以上)は、80〜90歳のグループでリスク低下と関連していた(RR=0.831)。
結論:
- 長時間の睡眠と過度の就床時間は、80歳以上の成人における認知機能障害のリスク増加を予測する。; これらの睡眠パターンは、高齢期における認知機能障害の潜在的なマーカーとして役立つ可能性がある。; 個別化された睡眠モニタリングは、認知機能低下の早期検出を支援する可能性がある。
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