Effects of Light Therapy on Stress, Depression, Quality of Sleep and Quality of Life in Middle-Aged Women: A Randomized Controlled Trial

빛 요법이 중년여성의 스트레스, 우울, 수면의 질 및 삶의 질에 미치는 효과: 무작위 대조군 연구

  • Received : 2021.03.29
  • Accepted : 2021.07.20
  • Published : 2021.07.28


This study is a randomized controlled trial to compare the effects of light therapy on stress, depression, sleep quality and quality of life in middle-aged women. The participants of this study were 56 middle-aged women who worked at the same office. Data collection period was from August 26 to September 13 for the control group and from September 16 to October 4 for the experimental group. Subjective stress, depression, quality of sleep and quality of life in middle-aged women were measured by Numeric Rating Scale (NRS), Center for Epidemiology studies of scale (CES-D), Verran & Synder-Halpern Sleep scale (VHS) and WHO Quality of Life Scale Abbreviated Version (WHOQOL-BREF). Stress index was measured using a Canopy9 RSA (IEMBIO, Gangwondo, Korea) equipment. The data were analyzed by mean, standard deviation, real number and percentage, χ2-test, t-test, repeated measures ANOVA and ANCOVA using IBM SPSS Statistics version 25.0. The results showed that the experimental group applying light therapy had significantly lower subjective stress (F=6.30, p<.001) and higher quality of life (F=2.80, p=.049) than the control group, There was no difference in objective stress index, depression, and sleep quality. As a result, light therapy is partially effective in subjective stress and quality of life for middle-aged women, and further research is needed on middle-aged women working in work environments with limited light exposure.

본 연구는 빛 요법이 중년여성의 스트레스, 우울, 수면의 질 및 삶의 질에 미치는 효과를 비교하기 위한 무작위 대조군 연구이다. 본 연구의 대상은 I시 소재 일기관에 근무하는 중년여성 56명이며 자료수집 기간은 대조군은 2019년 8월 26일부터 9월 13일까지 실험군은 9월 16일부터 10월 4일까지 각 3주간 이루어졌다. 중년여성의 주관적 스트레스, 우울, 수면의 질 및 삶의 질은 스트레스 측정도구(NRS), 우울 측정도구(CES-D), 수면 측정도구(VHS), 삶의 질 측정도구(WHOQOL-BREF)로 측정하였으며 객관적 스트레스 지수는 Canopy9 RSA (IEMBIO, Gangwondo, Korea) 장비를 이용하여 측정하였다. 자료 분석은 IBM SPSS Statistics version 25.0을 이용하여 평균과 표준편차, 실수와 백분율, χ2-test, t-test, repeated measures ANOVA, ANCOVA로 분석하였다. 연구결과는 빛 요법을 적용한 실험군은 대조군에 비해 주관적 스트레스(F=6.30, p<.001)가 유의하게 낮았고, 삶의 질 (F=2.80, p=.049)이 유의하게 높았다. 객관적 스트레스 지수, 우울, 수면의 질에는 차이가 없는 것으로 나타났다. 결과적으로 빛 요법은 중년여성의 주관적 스트레스, 삶의 질에 부분적으로 효과를 보이고 있어 빛 노출이 제한된 직무환경에서 근무하는 중년여성을 대상으로 한 반복연구가 필요하다고 본다.



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