Relationships between Bedding Impressions and Objective & Subjective Sleep States Evaluated on Multiple Nights for the Same Individual

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  • 複数夜で評価した寝具印象と客観的主観的睡眠状態との関係性の検討
  • フクスウヤ デ ヒョウカ シタ シング インショウ ト キャッカンテキ シュカンテキ スイミン ジョウタイ ト ノ カンケイセイ ノ ケントウ

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The purpose of this study was to investigate that relationships between each factor of impression evaluation of a bedding environment and objective sleep states and subjective sleep feelings. 20 young male adults without problems of sleep took part in our sleep experiment which was conducted for multiple nights in a controlled environment, and the recordings of 15 participants, five nights per participant, were analyzed. We made the impression evaluation form consisting of 25 adjective pairs and conducted factor analysis. In addition, we performed correlation analysis using the factor scores and objective & subjective sleep states. Through the factor analysis, three factors “affinity”, “physical properties” and “visibility” were extracted. The correlation analysis showed that the “affinity” score and subjective sleep feelings after waking showed significant correlation. Moreover, there were significant correlations between the “physical properties” score and objective sleep states associated with Stage 3. On the other hand, there was no correlation for the “visibility” score. The present study is supposed to provide new insights into bedding impression evaluation with the different method from previous studies.

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