The effects of yoga and quiet rest on subjective levels of anxiety and physiological correlates: a 2-way crossover randomized trial

dc.creatorRobert-McComb, Jacalyn J.
dc.creatorAlbracht-Schulte, Kembraen_US
dc.creator.orcid0000-0003-3315-5001en_US
dc.date.accessioned2018-10-22T19:07:08Z
dc.date.available2018-10-22T19:07:08Z
dc.date.issued2018-10-17
dc.description.abstractAbstract Background: Rest or acute exercise can decrease state anxiety, with some evidence showing exercise to prevent laboratory-induced elevations in anxiety. No study has examined whether yoga provides short-term protection against laboratory-induced anxiety. The aim of this study was to examine the effectiveness of an acute YogaFit session on state anxiety and measures of heart rate variability (HRV) to determine whether yoga provides short-term protection against emotional picture stimuli. Methods: A randomized repeated-measures crossover clinical trial was performed. Forty healthy, female college students completed a 30 min session of YogaFit and a time-matched seated rest condition on separate days. After each condition, participants viewed 30 min of emotional picture stimuli. State anxiety, heart rate and time-domain and frequency-domain measures of HRV were assessed baseline, post- condition, and post-exposure to emotional stimuli. Data were analysed using a condition x time (2 × 3) repeated-measures ANOVA. Results: Post-hoc comparisons indicate the following: (1) state anxiety significantly decreased from baseline to post-condition for both yoga and rest (p = 0.001) but returned to baseline values following exposure to emotional stimuli (p < 0.001) for both conditions; (2) heart rate decreased post-condition to post-exposure (p = 0.020) and baseline to post-exposure (p = 0.033) for both conditions; (3) time-domain measure of HRV showed a significant increase in HRV between baseline and post-condition (p = 0 .019), post-condition and post-exposure (p = 0 .007), and between baseline and post-exposure (p < 0.001). Conclusions: Both YogaFit and seated rest were effective at acutely reducing state anxiety post-condition, but not at preventing an induced anxiety response post-exposure. Following exposure to the emotionally stimulating pictures, there was a shift from the high frequency-domain to the low frequency-domain and an increase in the time-domain measure of HRV for both the YogaFit and the quiet rest condition.en_US
dc.description.sponsorshipTexas Tech Open Access Initiativeen_US
dc.identifier.citationAlbracht-Schulte, K., & Robert-McComb, J. (2018). The effects of yoga and quiet rest on subjective levels of anxiety and physiological correlates: a 2-way crossover randomized trial. BMC Complementary and Alternative Medicine, 18(1), 280.en_US
dc.identifier.govdocNCT03458702
dc.identifier.other10.1186/s12906-018-2343-1
dc.identifier.urihttp://hdl.handle.net/2346/82001
dc.language.isoengen_US
dc.publisherBMCen_US
dc.subjectAffect (Psychology)en_US
dc.subjectEmotionsen_US
dc.subjectHeart rate monitoringen_US
dc.subjectAutonomic nervous systemen_US
dc.titleThe effects of yoga and quiet rest on subjective levels of anxiety and physiological correlates: a 2-way crossover randomized trialen_US
dc.typeArticleen_US

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