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OBJECTIVE: Growing research indicates that daily stress is associated with poorer same-day cognitive performance, for example, memory and attention. However, it is unclear whether this relationship holds across diverse ages and engagement in physical activity (PA), or whether these factors might buffer the relationship between daily stress and subjective cognitive function. METHODS: Ecological momentary assessment data were collected from adults aged 25-88 across British Columbia, Canada. For 14 days, participants (N = 204) wore a tri-axial physical activity monitor, reported stressor occurrence in mobile surveys 4 times per day, and rated their subjective attention and memory at the end of each day. RESULTS: Multilevel models evaluated daily stressor occurrence as a predictor of subjective attention and memory, with same-day PA engagement and age as moderators. Subjective attention and memory were lower on days when a stressor had occurred, compared to stressor-free days. Neither PA nor age moderated the within-person associations of daily stressors with subjective cognition. CONCLUSION: The lack of stress-buffering effects for same-day PA and age raises questions about the contexts in which PA promotes cognitive functioning and about age-related processes underlying stress and cognition. Future work could examine the mechanisms that might explain the link between daily stress and cognition function, as well as the associations of different intensity and forms of physical activity on stress across age groups.
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Behavioral and social scientists have identified many nonbiological predictors of mortality. An important limitation of much of this research, however, is that risk factors are not studied in comparison with one another or from across different fields of research. It therefore remains unclear which factors should be prioritized for interventions and policy to reduce mortality risk. In the current investigation, we compare 57 factors within a multidisciplinary framework. These include (i) adverse socioeconomic and psychosocial experiences during childhood and (ii) socioeconomic conditions, (iii) health behaviors, (iv) social connections, (v) psychological characteristics, and (vi) adverse experiences during adulthood. The current prospective cohort investigation with 13,611 adults from 52 to 104 y of age (mean age 69.3 y) from the nationally representative Health and Retirement Study used weighted traditional (i.e., multivariate Cox regressions) and machine-learning (i.e., lasso, random forest analysis) statistical approaches to identify the leading predictors of mortality over 6 y of follow-up time. We demonstrate that, in addition to the well-established behavioral risk factors of smoking, alcohol abuse, and lack of physical activity, economic (e.g., recent financial difficulties, unemployment history), social (e.g., childhood adversity, divorce history), and psychological (e.g., negative affectivity) factors were also among the strongest predictors of mortality among older American adults. The strength of these predictors should be used to guide future transdisciplinary investigations and intervention studies across the fields of epidemiology, psychology, sociology, economics, and medicine to understand how changes in these factors alter individual mortality risk.
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Previsões , Mortalidade/tendências , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Comunicação Interdisciplinar , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Fatores de Risco , Estados Unidos/epidemiologiaRESUMO
With an increasing number of children attending regular early childhood education and care (ECEC), this setting presents an opportunity to develop physical activity habits and movement skills of children. These behaviours play an important role in the development and well-being of children. In 2017, an Active Play Standard was introduced in British Columbia, Canada, to mandate practices related to physical activity, screen time and movement skill development in licensed ECEC. A capacity-building initiative including training and online resources was released alongside these guidelines to support implementation. The purpose of this study was to qualitatively examine the barriers and facilitators ECEC practitioners faced in implementing the standard, and to explore the role of the capacity-building initiative. Data were collected via semi-structured telephone interviews with educators (n = 23). Data were coded using thematic analysis and sorted into three major themes influencing provision of physical activity opportunities: attributes and impact of the Active Play standard and capacity-building workshop, characteristics of providers and characteristics of ECEC settings. Future studies should consider targeting factors including organizational culture and climate, and provider capacity to provide physical activity and fundamental movement skill programming, and support for facility level policies and collaborative planning processes that create a positive physical activity culture.
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Cuidado da Criança , Creches , Criança , Pré-Escolar , Humanos , Colúmbia Britânica , Exercício Físico , Saúde da CriançaRESUMO
BACKGROUND: Exposure to chronic psychological stress across multiple life domains (multi-domain chronic burden) is associated with poor health. This may be because multi-domain chronic burden influences daily-level emotional processes, though this hypothesis has not been thoroughly tested. PURPOSE: The current study tested whether (a) multi-domain chronic burden is associated with greater exposure to daily stressors and (b) multi-domain chronic burden compounds negative affect on days with stressors compared to stressor-free days. METHODS: The MIDUS Study (Wave II) and the National Study of Daily Experiences sub-study were conducted from 2004 to 2006 (N = 2,022). Participants reported on eight life domains of psychological stress used to create a multi-domain chronic burden summary score. For eight consecutive days, participants reported the daily occurrence of stressful events and daily negative affect. RESULTS: Participants with greater multi-domain chronic burden were significantly more likely to report daily stressors. There was also a significant interaction between multi-domain chronic burden and daily stressors on negative affect: participants with higher multi-domain chronic burden had greater negative affect on stressor days than stressor-free days compared to those with lower multi-domain chronic burden. CONCLUSION: Participants with higher multi-domain chronic burden were more likely to report daily stressors and there was a compounding effect of multi-domain chronic burden and daily stressors on negative affect. These results suggest that experiencing a greater amount of psychological stress across multiple life domains may make daily stressors more toxic for daily affect.
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Emoções , Estresse Psicológico , Humanos , Estresse Psicológico/psicologiaRESUMO
BACKGROUND: Previous research suggests that there is a bidirectional relationship between incidental affect (i.e., how people feel in day-to-day life) and physical activity behavior. However, many inconsistencies exist in the body of work due to the lag interval between affect and physical activity measurements. PURPOSE: Using a novel continuous-time analysis paradigm, we examined the temporal specificity underlying the dynamic relationship between positive and negative incidental affective states and moderate-to-vigorous physical activity (MVPA). METHODS: A community sample of adults (n = 126, Mage = 27.71, 51.6% Male) completed a 14-day ambulatory assessment protocol measuring momentary positive and negative incidental affect six times a day while wearing a physical activity monitor (Fitbit). Hierarchical Bayesian continuous-time structural equation modeling was used to elucidate the underlying dynamics of the relationship between incidental affective states and MVPA. RESULTS: Based on the continuous-time cross-effects, positive and negative incidental affect predicted subsequent MVPA. Furthermore, engaging in MVPA predicted subsequent positive and negative incidental affect. Incidental affective states had a greater relative influence on predicting subsequent MVPA compared to the reciprocal relationship. Analysis of the discrete-time coefficients suggests that cross-lagged effects increase as the time interval between measurements increase, peaking at about 8 h between measurement occasions before beginning to dissipate. CONCLUSIONS: The results provide support for a recursive relationship between incidental affective states and MVPA, which is particularly strong at 7-9 hr time intervals. Future research designs should consider these medium-term dynamics, for both theory development and intervention.
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Exercício Físico , Monitores de Aptidão Física , Adulto , Humanos , Masculino , Feminino , Teorema de Bayes , Exercício Físico/psicologia , EmoçõesRESUMO
BACKGROUND: The number of adults across the globe with significant depressive symptoms has grown substantially during the COVID-19 pandemic. The extant literature supports exercise as a potent behaviour that can significantly reduce depressive symptoms in clinical and non-clinical populations. OBJECTIVE: Using a suite of mobile applications, at-home exercise, including high intensity interval training (HIIT) and/or yoga, was completed to reduce depressive symptoms in the general population in the early months of the pandemic. METHODS: A 6-week, parallel, multiarm, pragmatic randomised controlled trial was completed with four groups: (1) HIIT, (2) Yoga, (3) HIIT+yoga, and (4) waitlist control (WLC). Low active, English-speaking, non-retired Canadians aged 18-64 years were included. Depressive symptoms were measured at baseline and weekly following randomisation. RESULTS: A total of 334 participants were randomised to one of four groups. No differences in depressive symptoms were evident at baseline. The results of latent growth modelling showed significant treatment effects in depressive symptoms for each active group compared with the WLC, with small effect sizes (ESs) in the community-based sample of participants. Treatment groups were not significantly different from each other. Effect sizes were very large (eg, week 6 ES range=-2.34 to -2.52) when restricting the analysis only to participants with high depressive symptoms at baseline. CONCLUSIONS: At-home exercise is a potent behaviour to improve mental health in adults during the pandemic, especially in those with increased levels of depressive symptoms. Promotion of at-home exercise may be a global public health target with important personal, social and economic implications as the world emerges scathed by the pandemic. TRIAL REGISTRATION NUMBER: NCT04400279.
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COVID-19 , Aplicativos Móveis , Adulto , Canadá , Depressão/prevenção & controle , Terapia por Exercício/métodos , Humanos , PandemiasRESUMO
BACKGROUND: Childhood trauma (CT) increases the risk of adult depression. Buffering effects require an understanding of the underlying persistent risk pathways. This study examined whether daily psychological stress processes - how an individual interprets and affectively responds to minor everyday events - mediate the effect of CT on adult depressive symptoms. METHODS: Middle-aged women (N = 183) reported CT at baseline and completed daily diaries of threat appraisals and negative evening affect for 7 days at baseline, 9, and 18 months. Depressive symptoms were measured across the 1.5-year period. Mediation was examined using multilevel structural equation modeling. RESULTS: Reported CT predicted greater depressive symptoms over the 1.5-year time period (estimate = 0.27, s.e. = 0.07, 95% CI 0.15-0.38, p < 0.001). Daily threat appraisals and negative affect mediated the effect of reported CT on depressive symptoms (estimate = 0.34, s.e. = 0.08, 95% CI 0.22-0.46, p < 0.001). Daily threat appraisals explained more than half of this effect (estimate = 0.19, s.e. = 0.07, 95% CI 0.08-0.30, p = 0.004). Post hoc analyses in individuals who reported at least moderate severity of CT showed that lower threat appraisals buffered depressive symptoms. A similar pattern was found in individuals who reported no/low severity of CT. CONCLUSIONS: A reported history of CT acts as a latent vulnerability, exaggerating threat appraisals of everyday events, which trigger greater negative evening affect - processes that have important mental health consequences and may provide malleable intervention targets.
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Leukocyte telomere length, a marker of immune system function, is sensitive to exposures such as psychosocial stressors and health-maintaining behaviors. Past research has determined that stress experienced in adulthood is associated with shorter telomere length, but is limited to mostly cross-sectional reports. We test whether repeated reports of chronic psychosocial and financial burden is associated with telomere length change over a 5-year period (years 15 and 20) from 969 participants in the Coronary Artery Risk Development in Young Adults (CARDIA) Study, a longitudinal, population-based cohort, ages 18-30 at time of recruitment in 1985. We further examine whether multisystem resiliency, comprised of social connections, health-maintaining behaviors, and psychological resources, mitigates the effects of repeated burden on telomere attrition over 5 years. Our results indicate that adults with high chronic burden do not show decreased telomere length over the 5-year period. However, these effects do vary by level of resiliency, as regression results revealed a significant interaction between chronic burden and multisystem resiliency. For individuals with high repeated chronic burden and low multisystem resiliency (1 SD below the mean), there was a significant 5-year shortening in telomere length, whereas no significant relationships between chronic burden and attrition were evident for those at moderate and higher levels of resiliency. These effects apply similarly across the three components of resiliency. Results imply that interventions should focus on establishing strong social connections, psychological resources, and health-maintaining behaviors when attempting to ameliorate stress-related decline in telomere length among at-risk individuals.
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Vasos Coronários , Fatores Socioeconômicos , Encurtamento do Telômero , Telômero/metabolismo , Adolescente , Adulto , Vasos Coronários/patologia , Estudos Transversais , Feminino , Comportamentos Relacionados com a Saúde , Humanos , Leucócitos/metabolismo , Estudos Longitudinais , Masculino , Resiliência Psicológica , Fatores de Risco , Apoio Social , Telômero/genética , Fatores de Tempo , Adulto JovemRESUMO
BACKGROUND: The responsibility and stress of being a family caregiver are associated with reduced physical and mental health. PURPOSE: To examine whether a 24-week aerobic exercise program improves multiple aspects of psychological functioning in family caregivers. METHODS: Family caregivers of patients with Alzheimer's disease and other dementias (n = 68) were recruited and randomized into either an aerobic exercise group (n = 34) or a waitlist control group (n = 34). The exercise group was assigned a 24-week aerobic training program that incrementally increased the intensity, duration, and frequency of the exercise program until 150 min of moderate to vigorous activity were completed per week by the ninth week. Twelve measures of psychological functioning were administered at baseline and compared with responses completed following the intervention. RESULTS: Multilevel modeling revealed significant decreases in caregiver burden (ß = -4.60, 95% confidence interval [CI] = [-8.82, -0.38], RLMM2 = 0.11) and depression (ß = -2.59, 95% CI = [-4.79, -0.38], RLMM2 = 0.13), as well as increases in mastery (ß = 1.78, 95% CI = [0.09, 3.46], RLMM2 = .04) in the exercise intervention group compared to the control group. CONCLUSION: Family caregivers report high levels of depression and caregiver burden. Engagement in a 24-week exercise intervention can ameliorate the perceived burden of caregiving, symptoms of depression, and their sense of mastery.
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Cuidadores/psicologia , Exercício Físico/psicologia , Idoso , Doença de Alzheimer/enfermagem , Demência/enfermagem , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Análise Multinível , São Francisco/epidemiologia , Método Simples-CegoRESUMO
BACKGROUND: In response to the COVID-19 pandemic, experts in mental health science emphasized the importance of developing and evaluating approaches to support and maintain the mental health of older adults. OBJECTIVE: The aim of this study was to assess whether a group-based exercise program relative to a personal exercise program (both delivered online) and waitlist control (WLC) can improve the psychological health of previously low active older adults during the early stages of the COVID-19 pandemic. METHODS: The Seniors COVID-19 Pandemic and Exercise (SCOPE) trial was a 3-arm, parallel randomized controlled trial conducted between May and September 2020 in which low active older adults (aged ≥65 years) were recruited via media outlets and social media. After baseline assessments, consented participants were randomized to one of two 12-week exercise programs (delivered online by older adult instructors) or a WLC condition. A total of 241 older adults (n=187 women) provided baseline measures (via online questionnaires), were randomized (ngroup=80, npersonal=82, ncontrol=79), and completed measures every 2 weeks for the duration of the trial. The trial's primary outcome was psychological flourishing. Secondary outcomes included global measures of mental and physical health, life satisfaction, and depression symptoms. RESULTS: The results of latent growth modeling revealed no intervention effects for flourishing, life satisfaction, or depression symptoms (P>.05 for all). Participants in the group condition displayed improved mental health relative to WLC participants over the first 10 weeks (effect size [ES]=0.288-0.601), and although the week 12 effect (ES=0.375) was in the same direction the difference was not statistically significant (P=.089). Participants in the personal condition displayed improved mental health, when compared with WLC participants, in the same medium ES range (ES=0.293-0.565) over the first 8 weeks, and while the effects were of a similar magnitude at weeks 10 (ES=0.455, P=.069) and 12 (ES=0.258, P=.353), they were not statistically significant. In addition, participants in the group condition displayed improvements in physical health when compared with the WLC (ES=0.079-0.496) across all 12 weeks of the study following baseline. No differences were observed between the personal exercise condition and WLC for physical health (slope P=.271). CONCLUSIONS: There were no intervention effects for the trial's primary outcome (ie, psychological flourishing). It is possible that the high levels of psychological flourishing at baseline may have limited the extent to which those indicators could continue to improve further through intervention (ie, potential ceiling effects). However, the intervention effects for mental and physical health point to the potential capacity of low-cost and scalable at-home programs to support the mental and physical health of previously inactive adults in the COVID-19 pandemic. TRIAL REGISTRATION: ClinicalTrials.gov NCT04412343; https://clinicaltrials.gov/ct2/show/NCT04412343.
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COVID-19 , Pandemias , Idoso , Exercício Físico , Feminino , Humanos , Saúde Mental , SARS-CoV-2RESUMO
Stress can influence health throughout the lifespan, yet there is little agreement about what types and aspects of stress matter most for human health and disease. This is in part because "stress" is not a monolithic concept but rather, an emergent process that involves interactions between individual and environmental factors, historical and current events, allostatic states, and psychological and physiological reactivity. Many of these processes alone have been labeled as "stress." Stress science would be further advanced if researchers adopted a common conceptual model that incorporates epidemiological, affective, and psychophysiological perspectives, with more precise language for describing stress measures. We articulate an integrative working model, highlighting how stressor exposures across the life course influence habitual responding and stress reactivity, and how health behaviors interact with stress. We offer a Stress Typology articulating timescales for stress measurement - acute, event-based, daily, and chronic - and more precise language for dimensions of stress measurement.
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Alostase/fisiologia , Emoções/fisiologia , Desenvolvimento Humano/fisiologia , Modelos Biológicos , Estresse Psicológico/fisiopatologia , Humanos , Estresse Psicológico/classificação , Estresse Psicológico/etiologia , Estresse Psicológico/psicologiaRESUMO
BACKGROUND: Chronic caregiving stress may accelerate biological aging; however, the ability to integrate the meaning of caregiving through self-awareness, adaptation, and growth can buffer the negative effects of stress. Narrative researchers have shown that people who coherently integrate difficult experiences into their life story tend to have better mental health, but no prior study has examined the prospective association between narrative identity and biological indicators, such as telomere length. We tested whether narrative identity might be prospectively associated with resilience to long-term parenting stress, depressive symptoms, and protection from telomere shortening, especially among caregivers. METHODS: We conducted a semi-structured interview about parenting and quantified narrative themes by applying well-validated, standardized coding systems with high inter-rater reliability among 88 mothers: 32 "caregivers" (mothers with a child diagnosed with an autism spectrum disorder), and 56 "controls" (mothers with a neurotypical child). To assess longitudinal changes, we measured mental health (parenting stress [PS], depressive symptoms [DS]) and leukocyte telomere length [LTL], a biomarker of aging, at baseline and again 18â¯months later. We examined whether narrative identity themes were related to these outcomes and whether associations differed across caregivers versus controls. RESULTS: Caregivers exhibited significantly higher basal levels of PS and DS relative to controls (all p'sâ¯<â¯.05), but no significant difference in LTL (pâ¯>â¯.05). Caregivers rated higher in the narrative theme of integration showed healthier future 18-month trajectories in PS (Bâ¯=â¯-0.832, 99% CI: [-1.315, -0.155], pâ¯<â¯.01) and LTL (Bâ¯=â¯1.193, 99% CI: [0.526, 2.130], pâ¯<â¯.01), but no differences in depressive symptoms (pâ¯>â¯.05), adjusting for age and antidepressant use. Analyses examining affective themes in caregiver narratives did not demonstrate significant associations. Narrative themes did not predict outcomes in controls. CONCLUSIONS: The data suggest that narratives reflecting coherent integration, but not necessarily affect, prospectively relate to psychological and biological stress resilience. Maternal caregivers' ability to tell an integrated story of their parenting experiences forecasts lower parenting stress and telomere shortening over time. This study suggests the possibility that helping individuals better integrate the meaning of stressful experiences, but not necessarily to affectively redeem them, may constitute a potential novel target for intervention among chronically stressed populations such as caregivers.
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Cuidadores/psicologia , Estresse Fisiológico/fisiologia , Telômero/fisiologia , Adulto , Senescência Celular/fisiologia , Depressão/psicologia , Feminino , Humanos , Leucócitos , Saúde Mental , Mães , Narração , Terapia Narrativa/métodos , Poder Familiar/psicologia , Estudos Prospectivos , Reprodutibilidade dos Testes , Resiliência Psicológica , Estresse Psicológico/genética , Estresse Psicológico/psicologia , Inquéritos e Questionários , Encurtamento do Telômero/fisiologiaRESUMO
Stress over the lifespan is thought to promote accelerated aging and early disease. Telomere length is a marker of cell aging that appears to be one mediator of this relationship. Telomere length is associated with early adversity and with chronic stressors in adulthood in many studies. Although cumulative lifespan adversity should have bigger impacts than single events, it is also possible that adversity in childhood has larger effects on later life health than adult stressors, as suggested by models of biological embedding in early life. No studies have examined the individual vs. cumulative effects of childhood and adulthood adversities on adult telomere length. Here, we examined the relationship between cumulative childhood and adulthood adversity, adding up a range of severe financial, traumatic, and social exposures, as well as comparing them to each other, in relation to salivary telomere length. We examined 4,598 men and women from the US Health and Retirement Study. Single adversities tended to have nonsignificant relations with telomere length. In adjusted models, lifetime cumulative adversity predicted 6% greater odds of shorter telomere length. This result was mainly due to childhood adversity. In adjusted models for cumulative childhood adversity, the occurrence of each additional childhood event predicted 11% increased odds of having short telomeres. This result appeared mainly because of social/traumatic exposures rather than financial exposures. This study suggests that the shadow of childhood adversity may reach far into later adulthood in part through cellular aging.
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Longevidade/genética , Telômero/genética , Idoso , Idoso de 80 Anos ou mais , Senescência Celular , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Razão de Chances , Vigilância em Saúde Pública , Fatores de Risco , Estresse Psicológico , Encurtamento do Telômero , Estados UnidosRESUMO
Chronic psychological stress is associated with accelerated biological aging, immune dysfunction, and premature morbidity and mortality. Changes in the relative proportions of T cell subpopulations are thought to be a characteristic of immunological aging; however, understanding of whether these changes are associated with chronic psychological stress is incomplete. This study investigated associations between chronic caregiving stress and distributions of T cell phenotypes in a sample of high stress mothers of children with Autism Spectrum Disorder (caregivers; nâ¯=â¯91) and low stress mothers of neurotypical children (controls; nâ¯=â¯88). Immune markers assessed were naïve (CD45RAâ¯+â¯CD62L+), central memory (CD45RA-CD62L+), and effector memory (CD45RA-CD62L-) CD4+ and CD8+ T cells. We also examined the ratio of effector to naïve (E:N) CD4+ and CD8+ T cells. In models adjusted for age, body mass index, race/ethnicity, and antidepressant use, caregivers displayed higher percentages of effector memory CD8+ and CD4+ T cells as well as lower percentages of naïve CD8+ T cells and central memory CD8+ and CD4+ T cells compared to controls. Caregivers also displayed significantly higher E:N ratios for both CD4+ and CD8+ T cells. These findings were also independent of cytomegalovirus infection status. Furthermore, higher parental stress, across both groups, was related to several immune parameters. These findings provide preliminary evidence that chronic parental caregiving stress is associated with changes in relative proportions of T cell subpopulations that are consistent with accelerated immunological aging.
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Cuidadores/psicologia , Estresse Psicológico/imunologia , Subpopulações de Linfócitos T/imunologia , Adulto , Transtorno do Espectro Autista , Linfócitos T CD4-Positivos/metabolismo , Linfócitos T CD8-Positivos/metabolismo , Feminino , Citometria de Fluxo/métodos , Humanos , Memória Imunológica/fisiologia , Imunofenotipagem/métodos , Imunossenescência/fisiologia , Selectina L/análise , Selectina L/sangue , Antígenos Comuns de Leucócito/análise , Antígenos Comuns de Leucócito/sangue , Pessoa de Meia-Idade , Mães/psicologia , Estresse Psicológico/fisiopatologia , Subpopulações de Linfócitos T/fisiologiaRESUMO
PURPOSE: Comfort eating is a prevalent behavior. Prior research shows that comfort eating is associated with reduced stress responses and increased metabolic risk across adolescence, young adulthood, and middle adulthood. The purpose of the current research was to test if comfort eating prospectively predicted all-cause mortality in older adulthood. METHOD: The US Health and Retirement Study is an ongoing, nationally representative, longitudinal study of older adults. The final sample for the present study (N = 1445) included participants randomly selected to report how often they comfort ate. Comfort eating data were collected in 2008 and all-cause mortality data were collected in 2014. Participants also reported how often they consumed high-fat/sugar food as well as their height and weight in 2008. RESULTS: For each 1-unit increase in comfort eating, the expected odds of all-cause mortality (n = 255 deceased) decreased by 14%, OR = 0.86, p = 0.048, 95% CI [0.74, 0.99]. This analysis statistically accounted for other predictors of mortality in the sample including age, biological sex, race, highest educational degree attained, moderate and vigorous exercise, smoking, and cumulative illness. High-fat/sugar intake did not mediate (or diminish) the association but body mass index did. CONCLUSION: Comfort eating-irrespective of consuming high-fat/sugar food-may be associated with reduced mortality in older adults because it may promote greater body mass, and greater body mass is associated with lower risk of mortality in nationally representative samples. Interventionists might consider both beneficial and detrimental aspects of comfort eating across the lifespan.
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Ingestão de Alimentos/psicologia , Comportamento Alimentar/psicologia , Idoso , Idoso de 80 Anos ou mais , Índice de Massa Corporal , Exercício Físico , Feminino , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Mortalidade , AposentadoriaRESUMO
BACKGROUND: Chronic psychological stress is a risk factor for cardiovascular disease and mortality. Circulating hematopoietic progenitor cells (CPCs) maintain vascular homeostasis, correlate with preclinical atherosclerosis, and prospectively predict cardiovascular events. We hypothesize that (1) chronic caregiving stress is related to reduced CPC number, and (2) this may be explained in part by negative interactions within the family. METHODS: We investigated levels of stress and CPCs in 68 healthy mothers - 31 of these had children with an autism spectrum disorder (M-ASD) and 37 had neurotypical children (M-NT). Participants provided fasting blood samples, and CD45+CD34+KDR+ and CD45+CD133+KDR+ CPCs were assayed by flow cytometry. We averaged the blom-transformed scores of both CPCs to create one index. Participants completed the perceived stress scale (PSS), the inventory for depressive symptoms (IDS), and reported on daily interactions with their children and partners, averaged over 7 nights. RESULTS: M-ASD exhibited lower CPCs than M-NT (Cohen's d=0.83; p⩽0.01), controlling for age, BMI, and physical activity. Across the whole sample, positive interactions were related to higher CPCs, and negative interactions to lower CPCs (allp's<0.05). The adverse effects of group on CPCs were significantly mediated through negative interactions with the child (indirect ß=-0.24, p⩽0.01). In the full model, greater age (ß=-0.19, p=0.04), BMI (ß=-0.18, p=0.04), and negative interactions with the child (ß=-0.33, p<0.01) were independently associated with lower CPCs. M-ASD had a less healthy lipid profile (total cholesterol/HDL), which in turn, was associated with lower CPCs. CONCLUSIONS: Chronic stress adversely impacts CPC number, an early-stage biomarker that predicts subclinical atherosclerosis and future CVD events, independent of traditional cardiovascular risk factors and inflammatory factors. Among maternal caregivers, child-related interpersonal stress appears to be a key psychological predictor of stress-related CVD risk.
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Transtorno do Espectro Autista/psicologia , Células-Tronco Hematopoéticas/metabolismo , Comportamento Materno , Estresse Psicológico/sangue , Adolescente , Adulto , Transtorno do Espectro Autista/metabolismo , Doenças Cardiovasculares/sangue , Cuidadores/psicologia , Contagem de Células , Criança , Pré-Escolar , Depressão/psicologia , Feminino , Humanos , Metabolismo dos Lipídeos , Receptores de Lipopolissacarídeos/imunologia , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Cônjuges/psicologia , Adulto JovemRESUMO
OBJECTIVE: Despite variability in the burden of elevated depressive symptoms by sex and race and differences in the incidence of metabolic syndrome, few prior studies describe the longitudinal association of depressive symptoms with metabolic syndrome in a diverse cohort. We tested whether baseline and time-varying depressive symptoms were associated with metabolic syndrome incidence in black and white men and women from the Coronary Artery Risk Development in Young Adults study. METHODS: Participants reported depressive symptoms using the Center for Epidemiologic Studies Depression Scale at four examinations between 1995 and 2010. At those same examinations, metabolic syndrome was determined. Cox proportional hazards models were used to examine the associations of depressive symptoms on the development of metabolic syndrome in 3208 participants without metabolic syndrome at baseline. RESULTS: For 15 years, the incidence rate of metabolic syndrome (per 10,000 person-years) varied by race and sex, with the highest rate in black women (279.2), followed by white men (241.9), black men (204.4), and white women (125.3). Depressive symptoms (per standard deviation higher) were associated with incident metabolic syndrome in white men (hazard ratio = 1.25, 95% confidence interval = 1.08-1.45) and white women (hazard ratio = 1.17, 95% confidence interval = 1.00-1.37) after adjustment for demographic characteristics and health behaviors. There was no significant association between depression and metabolic syndrome among black men or black women. CONCLUSIONS: Higher depressive symptoms contribute modestly to the onset of metabolic syndrome among white adults.
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Negro ou Afro-Americano/estatística & dados numéricos , Depressão/epidemiologia , Síndrome Metabólica/epidemiologia , População Branca/estatística & dados numéricos , Adulto , Negro ou Afro-Americano/etnologia , Depressão/complicações , Depressão/etnologia , Feminino , Humanos , Estudos Longitudinais , Masculino , Síndrome Metabólica/etnologia , Síndrome Metabólica/etiologia , Pessoa de Meia-Idade , Fatores Sexuais , Estados Unidos/epidemiologia , População Branca/etnologiaRESUMO
Men who have sex with men (MSM) represent almost half of new HIV infections in Canada each year. However, the vast majority of research on HIV testing among MSM has been conducted in major urban centres. The present study addressed this gap by investigating HIV testing behaviour and predictors of HIV testing among MSM living outside major urban centres, in the Interior of British Columbia. An anonymous online survey of 153 MSM assessed HIV testing behaviour and psychosocial factors that may impact HIV testing (internalized homophobia, disclosure to healthcare providers (HCPs) of same sex attraction, and gay community involvement). Almost one-quarter (24%) had never been tested and over one-third (35%) had not disclosed same sex attraction to HCPs. Internalized homophobia was associated with a lower likelihood of HIV testing, and this relationship was partially explained by the fact that those high in internalized homophobia were less likely to disclose same sex attraction to their HCPs. Neither formal nor informal involvement in the gay community was related to HIV testing, and both types of involvement were relatively low in our sample. Further research is needed to better understand the distinctive health issues facing MSM living outside major urban centres.
Assuntos
Atitude do Pessoal de Saúde , Infecções por HIV/diagnóstico , Homofobia/psicologia , Homossexualidade Masculina/psicologia , Internet , Programas de Rastreamento/estatística & dados numéricos , Sorodiagnóstico da AIDS/estatística & dados numéricos , Adulto , Colúmbia Britânica , Canadá , Estudos Transversais , Revelação , Infecções por HIV/prevenção & controle , Inquéritos Epidemiológicos , Humanos , Masculino , Pessoa de Meia-Idade , Estigma Social , Adulto JovemRESUMO
OBJECTIVES: Chronic exposure to psychosocial stressors is related to worse somatic health. This association applies both to stressors early in life, such as childhood adversities, and more recent life stress, such as stressful life events. This study examined whether accelerated telomere shortening, as an indicator of cellular aging, might be an explanatory mechanism. METHODS: We examined whether childhood adversities and recent stressful life events were associated with shorter telomeres in 2936 participants (mean [standard deviation] age = 41.8 [13.1] years, 66% women, 57% current depression) of the Netherlands Study of Depression and Anxiety. Telomeres are specialized nucleic acid-protein complexes at the ends of linear DNA that shorten with age; telomere length (TL) was measured with quantitative polymerase chain reaction. RESULTS: Childhood life events (ß = .004, p = .805) and childhood trauma (ß = -.023, p = .205) were not related to shorter TL. However, we found negative associations between recent stressful life events and TL. Persons had shorter telomeres if they reported more stressful life events in the past year (ß = -.039, p = .028) and 1 to 5 years ago (ß = -.042, p = .018, adjusted for sociodemographics). The relationship between stressful life events and TL became borderline significant when further adjusted for smoking status. No associations with TL were found when stressful life events occurred more than 6 years ago (p > .10). CONCLUSIONS: Results show that recent stressful life events are associated with shorter TL. This association is not observed for psychosocial stressors that occur earlier in life. Whether these results are indicative of physiological resiliency remains to be explored by future longitudinal research.
Assuntos
Adultos Sobreviventes de Eventos Adversos na Infância , Leucócitos/fisiologia , Acontecimentos que Mudam a Vida , Estresse Psicológico , Encurtamento do Telômero/fisiologia , Telômero/fisiologia , Adolescente , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Países Baixos , Fatores de Tempo , Adulto JovemRESUMO
Sleep disturbance is a key behavioral risk factor for chronic medical conditions observed at high rates among overweight and obese individuals. Systemic inflammation, including that induced by stress, may serve as a common biological mechanism linking sleep, adiposity, and disease risk. To investigate these relationships, 48 postmenopausal women (mean age=61.8) completed a standardized laboratory stress task during which time blood was collected at baseline and 30, 50 and 90+ min after stressor onset to assess circulating levels of interleukin (IL)-6, IL-10, and IL-6/IL-10 ratio. Self-reported global sleep quality was assessed using the Pittsburgh Sleep Quality Index (PSQI) while adiposity was estimated by body mass index. Sagittal diameter was obtained in clinic to estimate visceral abdominal adiposity. Multi-level growth curve models revealed that poorer self-reported sleep quality was associated with greater stress-induced increases in IL-6/IL-10 ratio. In terms of adiposity, higher sagittal diameter, but not BMI, was associated with greater IL-6 reactivity (p's<0.05). Further, associations between sleep quality and cytokine reactivity varied as a function of sagittal diameter. Among poor sleepers (1 SD above mean of PSQI score), stress-induced increases in IL-6 and IL-6/IL-10 ratio were significantly steeper in those with high visceral adiposity (1 SD above the mean of sagittal diameter) compared to those with low visceral adiposity (1 SD below the mean of sagittal diameter). In sum, poorer sleep quality and greater visceral adiposity, separately and especially in combination, are associated with greater stress-related increases in systemic inflammation. This research may help elucidate the complex link between sleep, obesity and inflammatory disease risk.