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Light Therapy for Cancer-Related Fatigue in (Non-)Hodgkin Lymphoma Survivors: Results of a Randomized Controlled Trial
Journal article   Open access   Peer reviewed

Light Therapy for Cancer-Related Fatigue in (Non-)Hodgkin Lymphoma Survivors: Results of a Randomized Controlled Trial

Daniëlle E. J Starreveld, Laurien A Daniels, Jacobien M Kieffer, Heiddis B Valdimarsdottir, Jessie de Geus, Mirthe Lanfermeijer, Eus J. W van Someren, G. Esther A Habers, Jos A Bosch, Cécile P. M Janus, …
Cancers, Vol.13(19), 4948
09/30/2021
DOI: 10.3390/cancers13194948
PMCID: PMC8508131
PMID: 34638428
url
https://doi.org/10.3390/cancers13194948View
Published (Version of record) Open Access

Abstract

PURPOSETo evaluate the short- and long-term effects of light therapy on fatigue (primary outcome) and sleep quality, depression, anxiety, quality of life, and circadian rhythms (secondary outcomes) in survivors of (non-)Hodgkin lymphoma presenting with chronic cancer-related fatigue. METHODSWe randomly assigned 166 survivors (mean survival 13 years) to a bright white light intervention (BWL) or dim white light comparison (DWL) group. Measurements were completed at baseline (T0), post-intervention (T1), at three (T2), and nine (T3) months follow-up. A mixed-effect modeling approach was used to compare linear and non-linear effects of time between groups. RESULTSThere were no significant differences between BWL and DWL in the reduction in fatigue over time. Both BWL and DWL significantly (p < 0.001) improved fatigue levels during the intervention followed by a slight reduction in this effect during follow-up (EST0-T1 = -0.71; EST1-T3 = 0.15). Similar results were found for depression, sleep quality, and some aspects of quality of life. Light therapy had no effect on circadian rhythms. CONCLUSIONSBWL was not superior in reducing fatigue compared to DWL in HL and DLBCL survivors. Remarkably, the total sample showed clinically relevant and persistent improvements on fatigue not commonly seen in longitudinal observational studies in these survivors.

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