A randomized controlled trial investigated color therapy in 60 patients with Parkinson's disease. The intervention group received exposure to purple, yellow, and orange light over 7 weeks, with sessions totaling 45 minutes, while the control group received no intervention. Post-test data were collected at week 8.
The intervention group showed statistically significant decreases in Parkinson Fatigue Scale (PFS-16) scores (p = 0.05) and Beck Depression Inventory (BDI) scores (p = 0.05). Quality of life measured by the SF-36 scale showed a significant increase (p < 0.05). The abstract does not report baseline scores, magnitude of change, absolute numbers, effect sizes, or confidence intervals.
Safety and tolerability data were not reported in the abstract. The p-value for fatigue and depression outcomes was exactly 0.05, which is at the conventional threshold for statistical significance. The abstract lacks details on randomization methods, blinding, and analysis approaches.
While this RCT suggests potential benefits of color therapy for Parkinson's symptoms, clinicians should interpret these findings cautiously due to missing methodological details, unreported effect magnitudes, and absent safety information. Further research with complete reporting is needed to assess clinical utility.
View Original Abstract ↓
BACKGROUND: When compared with healthy people, fatigue, depression, and a lower quality of life are frequently experienced by Parkinson's patients. Color therapy has effects such as reducing depression and improving focusing problems.
AIM: Examining the effects of color therapy on fatigue, depression, and quality of life in Parkinson's patients constitutes the aim of the present study.
METHOD: This randomized controlled trial was conducted with 60 Parkinson's patients (30 intervention, 30 control). In the first and second weeks, the intervention group received color therapy 3 days per week, consisting of 15-min exposures to purple, yellow, and orange light (totaling 45 min per session). No intervention was performed during the third and fourth weeks. In the fifth and seventh weeks, a single weekly session was administered, applying each color for 15 min (totaling 45 min), while no intervention was carried out in the sixth week. Post-test data were collected in the eighth week. The control group received no intervention. Data collection tools included a "Patient Information Form," "Parkinson Fatigue Scale (PFS-16)," "Beck Depression Inventory (BDI)," and "SF-36 Quality of Life Scale."
RESULTS: The total mean score and sub-dimension scores of PFS-16 and the total mean score of BDI decreased statistically significantly in the intervention group (p = 0.05). The intervention also caused a significant increase in SF-36 quality of life total score and sub-dimension mean scores of the intervention group (p < 0.05).
CONCLUSION: Color therapy application was found to decrease the level of fatigue and depression and improve the quality of life in Parkinson's patients.