Effect of black tea aroma on sleep in women with high stress consciousness

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  • 紅茶の香りがストレス意識の高い女性の睡眠に及ぼす効果
  • コウチャ ノ カオリ ガ ストレス イシキ ノ タカイ ジョセイ ノ スイミン ニ オヨボス コウカ

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Abstract

<p>Aromas which have sedative effects are expected, based on prior aroma research, to enhance sleep quality. Expression of the sedative effect is reported to be due to suppression of the parasympathetic nervous system activity by black tea aroma. In this study we analysed the effects of tea aroma on sleep in 20 healthy females with high levels of self-perceived stress and sleep dissatisfaction over a 14-day test period. Psychological effects were observed as a reduction in perceived stress, as well as improved satisfaction with sleep quality, ease of sleep onset and sleep maintenance; while physiological data showed reduced sleep latency and bed out time, increased total sleep time, and a significant increase in sleep efficiency, suggesting black tea aroma has an ameliorating effect on sleep quality.</p>

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