Research press release


Scientific Reports

Scientific Reports: Television time and memory decline in older adults


今回、Daisy FancourtとAndrew Steptoeは、テレビの視聴とその6年後の言語記憶(単語と言語の記憶)の減退が関連するのかどうかを調べた。この研究では、英国縦断的高齢化調査(English Longitudinal Study of Aging;ELSA)のデータが用いられた。ELSAは、50歳以上の成人を対象とした全国代表研究で、3662人が参加している。調査の結果、テレビを1日当たり3時間半以上視聴することが、その後の6年間の言語記憶の減退と関連することが分かった。この関連は、座っている時間とは無関係と考えられている。先行研究の大半は、テレビの視聴を座って行う行動の代理指標と考えていた。


In adults aged 50 and over, watching television for more than 3.5 hours a day may be associated with a decline in verbal memory, according to a study published in Scientific Reports.

Daisy Fancourt and Andrew Steptoe investigated whether television viewing was associated with a decline in verbal memory (memory of words and language) six years later. The researchers used data from the English Longitudinal Study of Aging, a nationally representative study of adults aged 50 years and over, involving 3,662 participants. They found that watching for more than 3.5 hours per day was associated with a decline in verbal memory over the following six years. The association appears to be independent of time spent sitting down. Previous research had mostly considered television watching as a proxy for sedentary behaviour.

The authors considered possible explanations for the decline in verbal memory associated with watching television. They suggest that watching television reduces the amount of time that people spend on activities that could contribute to cognitive preservation, such as reading. Other screen-based activities that are more interactive, such as video gaming and using the internet, can have cognitive benefits such as improved problem-solving skills. The alert-but-passive nature of television watching, may create cognitive stress, which could contribute to memory decline, according to the authors.

doi: 10.1038/s41598-019-39354-4


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