Effects of Whole-Body Cryostimulation on Stress Biomarkers and Psychological Well-Being in Parkinson's Disease: A Pilot Study.

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Background: Parkinson's disease (PD) is a progressive neurodegenerative disorder characterized not only by motor impairments but also by debilitating non-motor symptoms (NMS) such as anxiety, depression, fatigue, and sleep disturbances. These symptoms are often resistant to dopaminergic therapies and significantly impact patients' quality of life. Whole-body cryostimulation (WBC) has emerged as a promising non-pharmacological intervention with potential effects on stress modulation and psychological well-being. Materials and Methods: In total, 14 patients with idiopathic PD underwent 10 WBC sessions (-110 °C for 2 min) over two weeks. Blood samples for cortisol and serotonin were collected before and after the first and last sessions. Patients completed standardized questionnaires evaluating anxiety (STAI-Y1, Y2), depression (BDI), fatigue (FSS), sleep quality (SCI), and daytime sleepiness (ESS) at baseline and after the final session. Results: Significant reductions in serum cortisol and improvements in serotonin levels were observed. Psychological assessments showed decreased anxiety and depression scores, with improvements in fatigue and sleepiness (p Discussion and Conclusions: Repeated WBC sessions were safe and well-tolerated and were associated with biochemical and psychological improvements. These preliminary findings support WBC as a promising complementary intervention for alleviating NMS in PD. Further randomized controlled studies are warranted to confirm these results.

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