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2022.05.29
カテゴリ： カテゴリ未分類
中年から老年の睡眠は7時間が最適だという調査研究の結果が報告された。長すぎても短すぎても注意力が散漫になり、記憶や理解がにぶくなり、問題の解決と決断力が衰えるという。また、7時間の睡眠は精神的健康にも良く、それ以上も以下も不安やうつ病になりやすいという。他の研究では、老年で寝つきが悪い、夜中にしばしば目が覚める人は痴呆症になりやすい、あるいは死亡が早くなるという。これは睡眠時間が短いとアルツハイマー病の原因物質のアミロイドが生成する、また長いと眠りが浅いとか断片的であるなどのためらしい。
しかしこれらの調査で示された睡眠時間と認識能の関係は原因と結果ではなく、精神的な問題があると、睡眠時間の長短に現れるのではないかというコメントもある。また、これらは平均的な結果であり、睡眠の時間と質は個人によって異なるという反論もある。適正な睡眠時間や夜中に何回も目を覚ます等の睡眠パターンは個人や年齢によって大きく異なるものだという。まとめると、一般的には7時間が適正だが、この時間帯付近で自分に最適な睡眠時間を見つけることが必要ということだろうか。
A research showed that seven hours is the optimum amount of sleep for the middle- and old-aged, and longer or shorter than seven hour sleep is associated with a reduced ability to pay attention and remember, solve problems and make decisions. Seven hour sleep is also good for mental health. If people sleep for longer or shorter than seven hours, they may suffer anxiety and depression. Old people who have difficulty falling asleep and who experience frequent awakenings are at risk for developing dementia or dying early. Too little sleep is associated with the buildup of amyloid that could causes dementia, and long sleep could be due to poor quality, fragmented sleep.
Other study showed a link between too little and too much sleep and cognitive problems are not cause and effect. Long and short sleep could be the indication of having mental problems. It was also indicated that there is individual variation in the duration and quality of sleep. Ideal amount of sleep varies among people and as we age.
It may be suggested from these studies that the optimum amount of sleep is seven hours in average, but each of us should find his or her best conditions including duration and quality.
しかしこれらの調査で示された睡眠時間と認識能の関係は原因と結果ではなく、精神的な問題があると、睡眠時間の長短に現れるのではないかというコメントもある。また、これらは平均的な結果であり、睡眠の時間と質は個人によって異なるという反論もある。適正な睡眠時間や夜中に何回も目を覚ます等の睡眠パターンは個人や年齢によって大きく異なるものだという。まとめると、一般的には7時間が適正だが、この時間帯付近で自分に最適な睡眠時間を見つけることが必要ということだろうか。
A research showed that seven hours is the optimum amount of sleep for the middle- and old-aged, and longer or shorter than seven hour sleep is associated with a reduced ability to pay attention and remember, solve problems and make decisions. Seven hour sleep is also good for mental health. If people sleep for longer or shorter than seven hours, they may suffer anxiety and depression. Old people who have difficulty falling asleep and who experience frequent awakenings are at risk for developing dementia or dying early. Too little sleep is associated with the buildup of amyloid that could causes dementia, and long sleep could be due to poor quality, fragmented sleep.
Other study showed a link between too little and too much sleep and cognitive problems are not cause and effect. Long and short sleep could be the indication of having mental problems. It was also indicated that there is individual variation in the duration and quality of sleep. Ideal amount of sleep varies among people and as we age.
It may be suggested from these studies that the optimum amount of sleep is seven hours in average, but each of us should find his or her best conditions including duration and quality.
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