Effects of stress management interventions on heart rate variability in adults with cardiovascular disease: a systematic review and meta-analysis.

Meta-analysis was used to investigate the potential benefits of stress management interventions (SMIs) on vagally-mediated heart rate variability (HRV) in adults with cardiovascular disease. Electronic bibliographic databases were searched through August 2022. Randomized controlled trials and quasi-experimental studies assessing effects of SMIs on HRV were included. Methodological quality was assessed with a standardized checklist. A pooled effect size was calculated for vagally-mediated HRV indices (standard deviation of normal-to-normal intervals, root mean square of the successive differences, and high frequency power) using random effects models. Fourteen studies (1202 participants, Mage: 59 ± 6.25 years; 25% ± 16% women; 61% ± 22% White) were included. Ten studies (11 effects) reported short-term HRV assessment; a small between-group difference emerged for vagally-mediated HRV (d+ = .27, 95% confidence interval [CI] 0.01-0.52, k = 11). Most interventions examined biofeedback; these studies yielded a small between-group difference on vagally-mediated HRV (d+ = 0.31, 95% CI 0.09-0.53, k = 7, Q [6] = 3.82, p = .70, I2 = 11%). This is the first systematic examination of the effect of SMIs on HRV in adults with CVD. Findings suggest a small effect of SMIs on vagally-mediated HRV, with biofeedback likely driving the effect. More research is required to fully understand whether this benefit on vagally-mediated HRV applies to other SMIs.

Mindfulness-Based Interventions for Adults Living with HIV/AIDS: A Systematic Review and Meta-analysis.

This meta-analysis examined the effects of mindfulness-based interventions (MBIs) on stress, psychological symptoms, and biomarkers of disease among people living with HIV/AIDS (PLWHA). Comprehensive searches identified 16 studies that met the inclusion criteria (N = 1059; M age = 42 years; 20% women). Participants had been living with HIV for an average of 8 years (range = < 1-20 years); 65% were currently on antiretroviral therapy. Between-group analyses indicated that depressive symptoms were reduced among participants receiving the MBIs compared to controls (d+ = 0.37, 95% CI 0.03, 0.71). Within-group analyses showed reductions in psychological symptoms (i.e., less anxiety, fewer depressive symptoms) and improved quality of life over time among MBI participants (d+s = 0.40-0.85). No significant changes were observed for immunological outcomes (i.e., CD4 counts) between- or within-groups. MBIs may be a promising approach for reducing psychological symptoms and improving quality of life among PLWHA. Studies using stronger designs (i.e., randomized controlled trials) with larger sample sizes and longer follow-ups are needed to clarify the potential benefits of MBIs for PLWHA.

The effects of yoga among adults with type 2 diabetes: A systematic review and meta-analysis.

The purpose of this meta-analysis was to examine the effects of yoga for glycemic control among adults with type 2 diabetes (T2DM). Comprehensive electronic databases searches located 2559 unique studies with relevant key terms. Studies were included if they (1) evaluated a yoga intervention to promote T2DM management, (2) used a comparison group, (3) reported an objective measure of glycemic control at post-intervention, and (4) had follow-up length or post-test of at least 8weeks from baseline. Independent raters coded participant, design and methodological characteristics and intervention content. Summary effect sizes and 95% confidence intervals (CI) were calculated. Twenty-three studies with 2473 participants (mean age=53years; 43% women) met eligibility criteria. Compared with controls, yoga participants were successful in improving their HbA1c (d+=0.36, 95% CI=0.16, 0.56; k=16), FBG (d+=0.58, 95% CI=0.40, 0.76; k=20), and PPBG (d+=0.40, 95% CI=0.23, 0.56; k=14). Yoga was also associated with significant improvements in lipid profile, blood pressure, body mass index, waist/hip ratio and cortisol levels. Overall, studies satisfied an average of 41% of the methodological quality (MQ) criteria; MQ score was not associated with any outcome (Ps >0.05). Yoga improved glycemic outcomes and other risk factors for complications in adults with T2DM relative to a control condition. Additional studies with longer follow-ups are needed to determine the long-term efficacy of yoga for adults with T2DM.

Complementary and integrative health approaches to manage chronic pain in U.S. military populations: Results from a systematic review and meta-analysis, 1985-2019.

The objective of this study was to examine the efficacy of complementary and integrative health (CIH) approaches for reducing pain intensity (primary outcome) and depressive symptoms (secondary outcome) as well as improving physical functioning (secondary outcome) among U.S. military personnel living with chronic pain. Studies were retrieved from bibliographic databases, databases of funded research, and reference sections of relevant articles. Studies that (a) evaluated a CIH approach to promote chronic pain management among military personnel, (b) used a randomized controlled trial design, and (c) assessed pain intensity were included. Two coders extracted data from each study and calculated effect sizes. Discrepancies between coders were resolved through discussion. Comprehensive searches identified 12 studies (k = 15 interventions) that met inclusion criteria. CIH practices included cognitive-behavioral therapies (k = 5), positive psychology (k = 3), yoga (k = 2), acupuncture (k = 2), mindfulness-based interventions (k = 2), and biofeedback (k = 1). Across these studies, participants who received the intervention reported greater reductions in pain intensity (d+ = 0.44, 95% CI [0.21, 0.67], k = 15) compared to controls. Statistically significant improvements were also observed for physical functioning (d+ = 0.36, 95% CI [0.11, 0.61], k = 11) but not for depressive symptoms (d+ = 0.21, 95% CI [-0.15, 0.57], k = 8). CIH approaches reduced pain intensity and improved physical functioning. These approaches offer a nonpharmacological, nonsurgical intervention for chronic pain management for military personnel. Future studies should optimize interventions to improve depressive symptoms in military populations experiencing chronic pain. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

The impact of transcendental meditation on depressive symptoms and blood pressure in adults with cardiovascular disease: A systematic review and meta-analysis.

BACKGROUND: Transcendental Meditation (TM) as a stress management technique may offer an adjunctive strategy to improve health and well-being in adults with cardiovascular disease (CVD). OBJECTIVES: To examine the efficacy of TM to improve aspects of cardiovascular health and psychological functioning in adults with CVD. METHOD: Studies (a) evaluating TM in adults with hypertension or CVD and (b) assessing a physiological or psychological outcome were retrieved and meta-analyzed. Weighted mean effect sizes were computed to assess between- and within-group changes. RESULTS: Nine studies met inclusion criteria (N = 851; mean age = 60 ±â€¯8 years; 47% women). Between-group analyses revealed no differences between TM and control groups. However, within-group (i.e., pre- to post-intervention) analyses revealed reductions in systolic (d+ = 0.31) and diastolic (d+ = 0.53) blood pressure (BP) for the TM group. There were no changes in depressive symptoms for TM or control participants. CONCLUSIONS: TM was associated with within-group (but not between-groups) improvements in BP. Continued research using randomized controlled trials with larger samples, and measuring psychophysiological outcomes at longer follow-up intervals is recommended.

The benefits of yoga for people living with HIV/AIDS: A systematic review and meta-analysis.

BACKGROUND: People living with HIV/AIDS (PLWHA) often experience psychological stress associated with disease management. This meta-analysis examines the benefits of yoga interventions on psychological distress among PLWHA. METHODS: Included were studies that (a) evaluated a yoga intervention in PLWHA; (b) provided between-group or within-group changes; and (c) assessed a psychological, physiological, or biomedical outcome. RESULTS: Seven studies sampling 396 PLWHA (M age = 42 years, SD = 5 years; 40% women) met inclusion criteria. PLWHA who received yoga interventions reported significant improvements in perceived stress (d+ = 0.80, 95% Confidence Interval [CI] = 0.53, 1.07), positive affect (d + = 0.73, 95% CI = 0.49, 0.98), and anxiety (d+ = 0.71, 95% CI = 0.27, 1.14) compared to controls. CONCLUSION: Yoga is a promising intervention for stress management. However, the literature is limited by the small number of studies. Randomized controlled trials with objective measures of HIV-related outcomes are needed to further evaluate the benefits of yoga.