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Effect of Bright Light Therapy on Depressive Symptoms in Middle-Aged and Older Patients Receiving Long-Term Hemodialysis

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  • Shu-Yi Huang

    (Institute of Medical Sciences, Tzu Chi University, Hualien City, Hualien 970301, Taiwan
    Department of Nursing, Graduate Institute of Long-Term Care, Tzu Chi University of Science and Technology, Hualien City, Hualien 973046, Taiwan)

  • Malcolm Koo

    (Graduate Institute of Long-term Care, Tzu Chi University of Science and Technology, Hualien City, Hualien 973046, Taiwan)

  • Tsung-Cheng Hsieh

    (Institute of Medical Sciences, Tzu Chi University, Hualien City, Hualien 970301, Taiwan)

  • Ru-Ping Lee

    (Institute of Medical Sciences, Tzu Chi University, Hualien City, Hualien 970301, Taiwan)

  • Huei-Chuan Sung

    (Institute of Medical Sciences, Tzu Chi University, Hualien City, Hualien 970301, Taiwan
    Graduate Institute of Long-term Care, Tzu Chi University of Science and Technology, Hualien City, Hualien 973046, Taiwan)

Abstract

Depressive symptoms are common psychiatric comorbidities among individuals receiving long-term hemodialysis. The aim of this two-arm parallel design study is to assess the effects of bright light therapy (BLT) on depressive symptoms among middle-aged and older adults receiving long-term hemodialysis. Study participants are recruited using convenient sampling from four dialysis clinics in eastern Taiwan. The eligible participants are block-randomized to either the BLT group (n = 30), with 30 min sessions of BLT five times a week for six weeks at their own home, or to the routine care control group (n = 30). The Beck Depression Inventory-II (BDI-II) scores and the salivary cortisol levels are obtained from the participants at three time points: baseline (T 0 ), week 3 (T 1 ), and week 6 (T 2 ). The results, from the generalized estimating equations, indicate that the decline in the BDI-II scores over time is significant in the BLT group at T 1 (β = −7.57, p < 0.001) and at T 2 (β = −6.20, p = 0.002) compared to the control group. The decrease in salivary cortisol levels at each visit is also significant in the BLT group at T 1 (β = −7.37, p = 0.017) and at T 2 (β = −12.22, p = 0.005) compared to the control group. Our findings support the hypothesis that a six-week program of BLT is able to alleviate depressive symptoms in middle-aged and older patients who receive long-term hemodialysis.

Suggested Citation

  • Shu-Yi Huang & Malcolm Koo & Tsung-Cheng Hsieh & Ru-Ping Lee & Huei-Chuan Sung, 2020. "Effect of Bright Light Therapy on Depressive Symptoms in Middle-Aged and Older Patients Receiving Long-Term Hemodialysis," IJERPH, MDPI, vol. 17(21), pages 1-9, October.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:21:p:7763-:d:433770
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    References listed on IDEAS

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    1. Yevgeny Botanov & Stephen S Ilardi, 2013. "The Acute Side Effects of Bright Light Therapy: A Placebo-Controlled Investigation," PLOS ONE, Public Library of Science, vol. 8(9), pages 1-1, September.
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