Mechanisms of improved body composition among perimenopausal women practicing Meditative Movement: a proposed biobehavioral model.

OBJECTIVES: Weight gain and unfavorable body composition are prevalent among midlife/older women throughout menopause. These shifts may negatively impact health, well-being, and longevity. Efforts to attenuate weight and body composition changes are traditionally driven by manipulation of diet and/or exercise; however, sustained results are limited, possibly because the full spectrum of biobehavioral systems is not addressed by diet and exercise alone. We propose a biobehavioral model detailing mechanisms of body composition decline among perimenopausal women and the associated components of Meditative Movement (ie, tai chi, qigong, yoga) that address each of these factors. METHODS: Based on our previous work and extensive review of the literature, we developed a multifactorial and multidimensional biobehavioral model including factors that most directly relate to body composition among perimenopausal women: 1) psychological (ie, stress and mood, mindfulness and self-compassion, body awareness), 2) behavioral (ie, sleep, physical activity, eating behaviors), and 3) physiological (ie, cortisol, estrogen). Relationships between each factor, Meditative Movement practice components, and predicted effects on body composition were explored in detail. RESULTS: Our model describes select psychological, behavioral, and physiological factors, and potential mechanistic pathways of Meditative Movement practice driving improved changes in body composition and weight outcomes for perimenopausal women. CONCLUSIONS: The proposed model details a novel, evidence-supported means to reduce the risk of deleterious shifts in body composition throughout perimenopause and menopause thereafter. We suggest that these changes may occur directly and/or indirectly through psychological, behavioral, and physiological mechanisms that facilitate the desired changes in body composition.

Well-being predictors of body composition and associated behavioral risk factors in midlife/older women participating in a meditative movement intervention: an exploratory analysis.

Introduction: Greater than 40% of women are obese, a key risk factor for cardiometabolic, neurocognitive disease, mood disorders, and certain cancers. Obesity and unfavorable body composition can compromise physical and psychological health and well-being. Preliminary evidence demonstrates Meditative Movement (i.e., Tai Chi Easy) improves health outcomes and body composition among midlife/older women. This single-group pilot study explored relationships between well-being predictors related to body composition and associated behavioral risk factors in midlife/older women pre-to-post Tai Chi Easy intervention. Methods: Eligible women 45-75 years old, participated in once-weekly 30-minute Tai Chi Easy classes over 8-weeks. Pre/post-intervention data included self-report surveys and on-site body composition. Multivariate linear regression models were fitted with putative predictor variables having correlations p-values of 0.20 or less with sleep quality and eating behaviors. Results: Participants (N = 36) (M age = 53.7) were White (80.4%) and attended ≥ 4 years of college (70.6%). Analyses resulted in one independent variable per model as a predictor of the dependent variables of sleep quality and emotional eating. Results indicated: (1) stress explained 13.4% sleep quality variance (F (2, 20) = 2.71, p = 0.09) and (2) self-compassion explained 42.1% emotional eating variance (F (2, 31) = 12.54, p < .01). Conclusion: Findings suggest stress and self-compassion partially explain variance in the dependent variables of sleep quality and emotional eating, both associated behavioral risk factors of body composition. Additional research may guide interventions to test efficacy and examine mediators to improve well-being predictors, body composition, and associated behavioral risk factors among midlife/older women.

Pilot study of tai chi and qigong on body composition, sleep, and emotional eating in midlife/older women.

Weight gain and related adverse changes in body composition are prevalent among midlife and older women and contribute to chronic disease (e.g., type 2 diabetes, hypertension, depression). Tai Chi (TC) and Qigong (QG), forms of Meditative Movement, demonstrate improved physical/psychological symptoms and body composition. Using a standardized TC/QG protocol, we explored pre/post intervention differences in percent body fat and factors related to body composition in midlife/older women. In the context of a single-group pilot study, females ages 45-75 (N = 51) enrolled in an 8-week TC/QG intervention. Primary outcome measures of body composition, sleep quality, emotional eating and select secondary outcome psycho-emotional factors (perceived stress, mood state, mindfulness, self-compassion, body awareness) were collected. Change in percent body fat did not reach statistical significance (p = .30, M =  0.35, 95% CI [- 0.32, 1.0]). Sleep quality improved significantly, p = .04, M = - 0.88, 95% CI [-1.71, - 0.04]. Emotional eating changed in the expected direction, but not significantly, p = .08, M =  -0.16, 95% CI [-0.34, 0.02]. Significant differences were found in body awareness, p = .01, M =  0.36, 95% CI [0.08, 0.63] and perceived stress, p = .05, M =  -2.36, 95% CI [-4.76, 0.04]. Preliminary results are promising as results showed improvements in factors related to healthy body composition. Refined research is needed to understand if/how TC/QG may improve body composition among midlife and older women.

The neural correlates of mindfulness-induced depression reduction in adults with autism spectrum disorder: A pilot study.

Adults with autism spectrum disorder (ASD) experience high rates of depression and anxiety, and some evidence suggests mindfulness-based stress reduction (MBSR) is effective in reducing these symptoms. However, the neural mechanisms of symptom alleviation, and benefit of MBSR beyond education/support groups are unknown. Maladaptive forms of self-reflection are linked to ASD, depression, and anxiety. In this pilot study, we hypothesized (a) MBSR would reduce depression and anxiety in adults with ASD and (b) a mechanism of symptom alleviation would be increased blood oxygen level-dependent signal in neural self-reflection hubs. Twenty-eight adults were randomly assigned to an 8-week MBSR group (n = 15) or a support group (n = 13) that met for the same amount of time with relaxation education materials. Based on previous self-reflection literature in ASD, regions of interest (ROIs) were middle cingulate cortex (MCC) and ventromedial prefrontal cortex (vmPFC). Only the MBSR group demonstrated significant reductions in depression, and neither group significantly changed in anxiety. Only the MBSR group increased activity of right MCC during self-reflection, and the increase correlated with depression alleviation. There were no changes in vmPFC for the MBSR group or either ROI for the support/education group. Seed-to-voxel connectivity analysis revealed that only the MBSR group increased functional connectivity between right MCC and pre/postcentral gyrus, suggesting MBSR may increase primary sensorimotor input to higher order cognitive brain regions. Taken together, MBSR may be effective for reducing depression in adults with ASD, and the neural mechanism may be increasing frontal circuit involvement during self-directed thought.

Nurse practitioner and physician assistant physical activity counseling knowledge, confidence and practices.

OBJECTIVE: This exploratory cross-sectional study examined nurse practitioners' (NPs) and physician assistants' (PAs) perceptions about their physical activity counseling practices. METHOD: Participants were currently practicing NPs (n=240) and PAs (n=78) primarily in Arizona, USA during 2010. Participants completed a modified version of the Promotion of Physical Activity by Nurse Practitioners Questionnaire either online or in person during a practitioner specific conference. Mann-Whitney U tests and Chi-Square analyses examined differences between NPs and PAs. RESULTS: NP respondents were older (48 vs. 40 yrs, p<0.001) and more likely to be female (94% vs. 76%; p<0.001) compared to PAs. The majority of respondents (NPs:75%; PAs:64%; p<0.07) reported routinely counseling patients about physical activity. There were no differences in perceived knowledge (p=0.10) or confidence (p=0.75) to provide physical activity counseling between NPs and PAs. Approximately half of all respondents reported receiving training to provide physical activity counseling as part of their educational preparation to become a health practitioner (p=0.18). CONCLUSION: Study results indicate that NPs and PAs are knowledgeable, confident and currently providing some level of physical activity counseling to patients. However, the majority of respondents are interested in receiving additional training to aid in providing physical activity counseling.