Mindfulness-based stress reduction and physiological activity during acute stress: a randomized controlled trial
SourceHealth Psychology, 32, 10, (2013), pp. 1110-3
Article / Letter to editor
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SubjectNCEBP 8: Psychological determinants of chronic illness; NCEBP 8: Psychological determinants of chronic illness N4i 4: Auto-immunity, transplantation and immunotherapy
OBJECTIVE: The aim was to examine the effects of a Mindfulness-Based Stress Reduction (MBSR) intervention on cardiovascular and cortisol activity during acute stress. METHOD: Eighty-eight healthy community-dwelling individuals reporting elevated stress levels were randomly assigned to the MBSR protocol or a waitlist control group. Before and after the intervention period they participated in a laboratory stress protocol consisting of mental arithmetic and speech tasks. Laboratory measurements included continuous cardiovascular parameters (heart period, heart rate variability, and systolic and diastolic blood pressure [SBP and DBP]), and salivary cortisol. RESULTS: Compared to the control group and controlling for age, sex, body mass index, and beta-blockers, the MBSR group showed larger pre- to postintervention decreases in overall SBP (F(1, 58) = 4.99, p = .029, partial eta(2) = .08) and DBP (F(1, 58) = 11.09, p = .002, partial eta(2) = .16). In addition, the MBSR group exhibited smaller SBP and DBP stress-related changes from pre- to postintervention (F(2, 116) = 4.89, p = .012, partial eta(2) = .08; F(2, 116) = 6.07, p = .007, partial eta(2) = .10, respectively). No effects were obtained on other physiological measures. CONCLUSION: MBSR may help reducing blood pressure levels and blood pressure reactivity to stress.
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