The relationship between serum 25-hydroxyvitamin D levels and various parameters in “teleworking” settled as a new lifestyle: a cross-sectional study

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  • 「新しい生活様式」の在宅勤務における各種パラメータと血清 25-hydroxyvitamin D 濃度の関連性―横断研究―
  • 「 アタラシイ セイカツ ヨウシキ 」 ノ ザイタク キンム ニ オケル カクシュ パラメータ ト ケッセイ 25-hydroxyvitamin D ノウド ノ カンレンセイ : オウダン ケンキュウ

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Abstract

[Objective] Low vitamin D (VD) status is associated with the development of various diseases; however, unfortunately low VD status is common in Japan. COVID-19 pandemic forces office workers to teleworking as " a new lifestyle ", which possibly worsens their VD insufficiency. In the present study, we performed a cross-sectional study to investigate whether teleworking settled as a " new lifestyle " affects serum 25-hydroxyvitamin D (25OHD) levels. [Method] The study was performed for 116 office workers (mean age: 41.2 years; F/M: 84/32), in Yokohama, Kanagawa Prefecture from April to June 2020. Several questionnaires and blood samples were collected. VD deficiency was defined as serum 25OHD concentration less than 20 ng/mL. [Results] VD deficiency was found in 62.1% of the participants. There was no association between VD deficiency and serum 25OHD levels with either teleworking or commuting. On the other hand, stepwise multiple regression analyses showed that VD deficiency had significant odds ratios for the intake amount of VD supplements (p = 0.047) and the frequency of VD supplementation (more than 5 days per week) (p = 0.004). Furthermore, serum 25OHD levels were significantly related with sunlight exposure (p = 0.036), the intake amount of VD supplements (p = 0.004), and the frequency of VD supplementation (more than 5 days per week) (p < 0.001). [Conclusions] In the present study, the majority of office workers showed insufficient serum 25OHD levels. Stepwise multiple regression analyses showed that in office workers with teleworking or commuting between April and June 2020, VD supplementation and sunlight exposure significantly affected their serum 25OHD levels. These data indicated that active sunlight exposure and VD intake from food are effective measures for compensating insufficient VD in office workers with teleworking or commuting.

Journal

  • VITAMINS

    VITAMINS 95 (1), 12-19, 2021-01-25

    THE VITAMIN SOCIETY OF JAPAN

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