Effect of restorative yoga vs. stretching on diurnal cortisol dynamics and psychosocial outcomes in individuals with the metabolic syndrome: the PRYSMS randomized controlled trial

Autor: Sarah Corey, Elissa S. Epel, Maria Rosario G. Araneta, Roger J. Cole, Michael Schembri, Sarah B. Pawlowsky, Elizabeth Barrett-Connor, Alka M. Kanaya
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Male
6.6 Psychological and behavioural
Hydrocortisone
Waking cortisol
Endocrinology
Diabetes and Metabolism
Medical and Health Sciences
Dexamethasone
law.invention
Social support
Endocrinology
Randomized controlled trial
law
Chronic stress
Psychiatry
Metabolic Syndrome
Depression
Rehabilitation
Middle Aged
Circadian Rhythm
Psychiatry and Mental health
Mental Health
Female
Psychology
Psychosocial
medicine.drug
Adult
medicine.medical_specialty
Clinical Trials and Supportive Activities
Stress
Bedtime
Article
Young Adult
Clinical Research
Muscle Stretching Exercises
Behavioral and Social Science
Complementary and Integrative Health
medicine
Humans
Saliva
Biological Psychiatry
Aged
Endocrine and Autonomic Systems
Yoga
Psychology and Cognitive Sciences
Evaluation of treatments and therapeutic interventions
Social Support
medicine.disease
Affect
Diurnal cortisol
Physical therapy
Psychological
Pituitary-Adrenal Function Tests
Metabolic syndrome
Body mass index
Mind and Body
Stress
Psychological
Zdroj: Psychoneuroendocrinology, vol 49, iss 1
Popis: Summary Purpose Chronic stimulation and dysregulation of the neuroendocrine system by stress may cause metabolic abnormalities. We estimated how much cortisol and psychosocial outcomes improved with a restorative yoga (relaxation) versus a low impact stretching intervention for individuals with the metabolic syndrome. Methods We conducted a 1-year multi-center randomized controlled trial (6-month intervention and 6-month maintenance phase) of restorative yoga vs. stretching. Participants completed surveys to assess depression, social support, positive affect, and stress at baseline, 6 months and 12 months. For each assessment, we collected saliva at four points daily for three days and collected response to dexamethasone on the fourth day for analysis of diurnal cortisol dynamics. We analyzed our data using multivariate regression models, controlling for study site, medications (antidepressants, hormone therapy), body mass index, and baseline cortisol values. Results Psychosocial outcome measures were available for 171 study participants at baseline, 140 at 6 months, and 132 at 1 year. Complete cortisol data were available for 136 of 171 study participants (72 in restorative yoga and 64 in stretching) and were only available at baseline and 6 months. At 6 months, the stretching group had decreased cortisol at waking and bedtime compared to the restorative yoga group. The pattern of changes in stress mirrored this improvement, with the stretching group showing reductions in chronic stress severity and perseverative thoughts about their stress. Perceived stress decreased by 1.5 points (−0.4; 3.3, p = 0.11) at 6 months, and by 2.0 points (0.1; 3.9, p = 0.04) at 1 year in the stretching compared to restorative yoga groups. Post hoc analyses suggest that in the stretching group only, perceived increases in social support (particularly feelings of belonging), but not changes in stress were related to improved cortisol dynamics. Conclusions We found significant decreases in salivary cortisol, chronic stress severity, and stress perception in the stretching group compared to the restorative yoga group. Group support during the interactive stretch classes may have contributed to these changes.
Databáze: OpenAIRE
Externí odkaz: