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1.
J Phys Act Health ; 21(7): 645-656, 2024 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-38575136

RESUMO

BACKGROUND: We used nationally representative data to explore associations among location of residence (rural/urban) and perceived barriers to physical activity (PA) in Canadian youth. METHODS: We analyzed the 2017 Canadian Community Health Survey, Barriers to Physical Activity Rapid Response data for 12- to 17-year-old youth. Nine items from the survey assessing perceived barriers to PA were combined into 3 barrier domains: resources, motivational, and socioenvironmental. The likelihood of reporting barriers to PA based on rural-urban location was examined using survey-weighted binary logistic regression following a model fitting approach. Sociodemographic factors were modeled as covariates and tested in interaction with location. For each barrier domain, we derived the best-fitting model with fewest terms. RESULTS: There were no location-specific effects related to reporting any barrier or motivation-related PA barriers. We found a sex by location interaction predicting the likelihood of reporting resource-related barriers. Rural boys were less likely to report resource-related barriers compared with urban boys (odds ratio [OR] = 0.42 [0.20, 0.88]). Rural girls were more likely to report resource-related barriers compared with boys (OR = 3.72 [1.66, 8.30]). Regarding socioenvironmental barriers, we observed a significant body mass index by location interaction demonstrating that rural youth with body mass index outside the "normal range" showed a higher likelihood of reporting socioenvironmental barriers compared with urban youth (OR = 2.38 [1.32, 4.30]). For urban youth, body mass index was unrelated to reporting socioenvironmental barriers (OR = 1.07 [0.67, 1.71]). CONCLUSION: PA barriers are not universal among Canadian youth. Our analyses highlight the importance of testing interactions in similar studies as well as considering key sociodemographic characteristics when designing interventions.


Assuntos
Exercício Físico , População Rural , População Urbana , Humanos , Adolescente , Masculino , Feminino , Estudos Transversais , Canadá , Exercício Físico/psicologia , Criança , Inquéritos Epidemiológicos , Motivação , Fatores Sexuais , Características de Residência , Fatores Sociodemográficos
2.
Clin Neuropsychol ; : 1-32, 2024 Mar 27.
Artigo em Inglês | MEDLINE | ID: mdl-38533627

RESUMO

Objectives: We aimed to describe the methods of smartphone-based cognitive ecological momentary assessment designs in clinical populations, with an intention to evaluate how the role of sex and/or gender has been considered in the design and analyses, particularly including female-specific physiology. Methods: This scoping review was conducted based on JBI scoping review methodology. On March 2nd, 2023, we searched for literature across four databases. Screening of the results and data extraction were conducted in duplicate according to the a priori methods in the pre-registered protocol. Results: 31 articles were included in this review. Participants ranged in age from 15-85 years old with various clinical disorders. Prompts were given between 1-7 times per day for 7-84 days. Executive function was the most frequently assessed cognitive domain. Over half the studies (n = 17, 55%) did not investigate the effects of sex and/or gender, and only one study considered the impact of hormonal therapy. Many studies (n = 14, 45%) used sex and gender interchangeably or incorrectly. Conclusions: Studies varied in design, with heterogeneity in the reporting of methodological information. The lack of attention to sex/gender on neuropsychological outcomes can lead to confusion and contradiction regarding its potential impact on cognition in clinical populations. This may hinder the identification of effective interventions for those assigned female at birth who have been overlooked or considered indistinguishable from their male counterparts. Given the well-documented impact of sex/gender on cognition, it is essential that future neuropsychological research, especially EMA-based studies, prioritize investigating sex/gender to ensure better outcomes for all.

3.
BMC Public Health ; 23(1): 2216, 2023 11 10.
Artigo em Inglês | MEDLINE | ID: mdl-37950219

RESUMO

BACKGROUND: Physical activity occurs across various domains including leisure/recreation, for transportation, or for work or household reasons. Rural and urban active living environments are characterized by different opportunities for physical activity within each domain which may translate into different patterns of behavior. The aim of this study was to compare rural-urban differences in physical activity across different domains, and explore interactions between sociodemographic factors, physical activity domains, and rurality. METHODS: We used self-reported data collected across three physical activity domains (active transportation, recreation, occupational/household) and relevant sociodemographic variables from the Canadian Community Health Survey. Adjusting for sociodemographic factors, we did two separate cross-sectional analyses: 1) binary logistic regression to determine the odds of reporting any activity in each domain, and 2) ordinary least squares regression using the sub-samples reporting > 0 min per week of activity to compare how much activity was reported in each domain. RESULTS: Our final survey weighted sample of Canadian adults (mean age 47.4 years) was n = 25,669,018 (unweighted n = 47,266). Rural residents were less likely to report any active transportation (OR = 0.59, 95% CI [0.51, 0.67], p < .0001). For recreational physical activity, rural males had lower odds (OR = 0.75, 95% CI [0.67, 0.83], p < .0001) and rural females had higher odds (OR = 1.19, 95% CI [1.08, 1.30], p = .0002) of reporting any participation compared to urban residents. Rural males (OR = 1.90, 95% CI [1.74, 2.07], p < .0001) and females (OR = 1.33, 95% CI [1.21, 1.46], p < .0001) had higher odds of reporting any occupational or household physical activity. CONCLUSIONS: Urban residents tend to participate in more active transportation, while rural residents participate in more occupational or household physical activity. Location-based differences in physical activity are best understood by examining multiple domains and must include appropriate sociodemographic interactions, such as income and sex/gender.


Assuntos
Exercício Físico , Atividades de Lazer , Adulto , Masculino , Feminino , Humanos , Pessoa de Meia-Idade , Estudos Transversais , Canadá , Viagem
4.
Prev Med Rep ; 30: 102061, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36531104

RESUMO

Considering interactions between barriers to physical activity, sociodemographic factors, and rurality can support an equity-focused approach to physical activity promotion. In this cross-sectional analysis of the Canadian Community Health Survey Barriers to Physical Activity Rapid Response module, we compared self-reported individual and social-environmental correlates of physical activity between rural and urban residents and explored interactions with sociodemographic factors. Lack of social support was associated with lower odds of meeting physical activity guidelines for rural residents (OR = 0.71 [0.57,0.89], p = 0.003), but not for urban residents (OR = 0.99 [0.84,1.17], p =.931). Limited access to low-cost facilities was associated with lower odds of meeting physical activity guidelines (OR = 0.85 [0.73,0.98], p = 0.030) regardless of location, but was reported more commonly as a barrier by rural males (27.3 % vs 8.6 % urban) and females (30.0 % vs 9.1 % urban). Inadequate social support was associated with lower odds of meeting physical activity guidelines in females (OR = 0.79 [0.66,0.94], p =.009), but not males (OR = 0.99 [0.84,1.17], p =.931). Individual-level barriers such as time, costs, enjoyment, and confidence were associated with meeting physical activity guidelines for both rural and urban residents. Social-environmental factors appear to be the main contributors to physical activity inequities between rural and urban residents. Interventions designed to bolster social connectedness may support physical activity engagement for people living in rural communities.

5.
Front Psychol ; 13: 972193, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36405132

RESUMO

concepts are defined as concepts that cannot be experienced directly through the sensorimotor modalities. Explaining our understanding of such concepts poses a challenge to neurocognitive models of knowledge. One account of how these concepts come to be represented is that sensorimotor representations of grounded experiences are reactivated in a way that is constitutive of the abstract concept. In the present experiment, we investigated how sensorimotor information might constitute GOD-related concepts, and whether a person's self-reported religiosity modulated this grounding. To do so, we manipulated both the state of the body (i.e., kneeling vs. sitting) and the state of stimuli (i.e., spatial position on the screen) in two tasks that required conceptual categorization of abstract words. Linear Mixed Effects model fitting procedures were used to determine which manipulated factors best predicted response latency and accuracy in both tasks. We successfully replicated previous research demonstrating faster categorization of GOD-related words when they were presented at the top of the screen. Importantly, results demonstrated that the kneeling posture manipulation enhanced this effect, as did religiosity, as participants who scored higher in religiosity showed a greater effect of the posture manipulation on the speed with which word categorization occurred when those words were presented in the higher visuospatial presentation condition. Overall, we interpreted our findings to suggest that directly manipulating sensorimotor information can facilitate the categorization of abstract concepts, supporting the notion that this information in part constitutes the representation of abstract concepts.

6.
SSM Popul Health ; 16: 100964, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34841038

RESUMO

BACKGROUND: Individual differences in physical activity behavior are associated with a collection of individual and environmental factors manifesting as barriers to participation. Understanding how barriers to physical activity differ based on sociodemographic characteristics can support identification and elimination of health inequities. OBJECTIVES: To compare the odds of reporting individual and environmental barriers to physical activity in rural and urban adults, and explore interactions between rural-urban location and sociodemographic factors to characterize patterns in barriers to physical activity. DESIGN: Cross-sectional. METHODS: We analyzed the 2017 Canadian Community Health Survey Barriers to Physical Activity Rapid Response, with a final weighted sample of 24,499,462 (unweighted n=21,967). The likelihood of reporting each barrier domain based on rural-urban location was examined using binary logistic regression following a model-fitting approach with sociodemographic characteristics as covariates or interaction terms. RESULTS: Adjusting for sociodemographic factors, rural residents showed 85% higher odds of reporting at least one social or built environmental barrier (OR=1.85 [1.66, 2.07]). Compared to urban residents, rural residents showed significantly higher odds of reporting barriers to facility access (OR=4.15 [3.58, 4.83]) and a lack of social support to be active (OR=1.17 [1.04, 1.32]). Urban residents reported lower preference for physical activity, lower enjoyment of physical activity and lower confidence in their ability to regularly engage in physical activity. Interactions between socioeconomic status and location were identified related to enjoyment and confidence to be active. There was no effect of location on predicting the odds of reporting an individual resource-related variable (e.g., time, energy). CONCLUSIONS: Despite being more likely than urban residents to prefer and enjoy physical activity, rural residents have fewer opportunities and receive less social support to be active. It is important to consider geographic location when characterizing barriers to physical activity and in the development of context-specific health promotion strategies.

7.
Front Hum Neurosci ; 15: 684412, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34658813

RESUMO

Intersectionality contends that sex/gender is constituted of and with other social categories, and that the social structures giving rise to inequality should be addressed in research. This is a powerful and important perspective from which to investigate the processes and consequences of social group memberships, one which has been overlooked by most neuroscientific research. In particular, neurofeminism, a field of critical neuroscience that challenges neuroscientific assumptions, methods and interpretations of data that reinforce sexism, has ignored intersectionality to date. In contrast, research in the field of psychology has been engaging with intersectionality for more than a decade. In reflecting on how intersectionality has advanced feminist research in psychology, this paper provides a critical analysis of potential novel research avenues for neurofeminism. We identify three main research themes guided by intersectionality. The first theme involves research centered on understanding the socio-structural causes of health inequalities experienced by individuals with intersecting marginalized social identities; the second concerns research addressing the psychological processing of social group memberships that underlies the enactment of systemic discriminatory practices; and the third theme comprises intersectionality research that aims to challenge psychological epistemology. Drawing parallels between the fields of psychology and neuroscience, we explore the potential benefits and risks of advancing an intersectionality-informed neurofeminism.

8.
Can J Public Health ; 112(4): 748-757, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-33977500

RESUMO

OBJECTIVES: The goal of this study was to compare the odds of meeting physical activity (PA) guidelines among adults living in rural and urban areas of Canada. METHODS: Data from the 2017 cycle of the Canadian Community Health Survey were analyzed using binomial logistic regression with a sample of 47,266 adults representing a survey-weighted total of 25,669,018. The odds of meeting PA guidelines were determined based on self-reported moderate-to-vigorous PA (<150 min per week or ≥150 min per week). Communities were categorized as urban or rural based on population size and density. Individual-level correlates included in the model were self-identified sex, age, body mass index, highest level of education, household income, perceived health, and sense of belonging to community. RESULTS: Approximately 56.6% of rural and 59.3% of urban adults reported meeting recommended PA levels when location was examined as a sole predictor. The best-fit model adjusted for all individual-level factors showed a significant sex × location interaction. Males in rural communities were more likely to report meeting PA guidelines (odds = 0.90 or 47.4%) than males in urban areas (odds = 0.78 or 43.8%), whereas females living in rural communities (odds = 0.58 or 36.7%) were less likely to report meeting PA guidelines than females in urban areas (odds = 0.65 or 39.4%). CONCLUSION: The association between rural-urban residence and meeting PA guidelines appears to be contingent on self-identified sex differences. Future work should explore how gender- and location-related variables interact to influence self-reported PA engagement.


RéSUMé: OBJECTIFS: Le but de cette étude était de comparer les probabilités de respecter les recommandations en matière d'activité physique (AP) liées à la santé de la population chez les adultes vivant dans les communautés rurales et urbaines du Canada. MéTHODES: Les données du cycle 2017 de l'Enquête sur la santé dans les collectivités canadiennes ont été analysées à l'aide de régressions logistiques binomiales avec un échantillon pondéré de 47 266 participants adultes représentant 25 669 018 adultes. Les probabilités de respecter les lignes directrices de l'AP ont été déterminées en fonction de l'AP modérée à vigoureuse déclarée (<150 minutes par semaine ou ≥150 minutes par semaine) et les communautés ont été classées comme urbaines ou rurales selon la taille et la densité de la population. Les corrélats au niveau individuel inclus dans le modèle étaient les suivants : sexe auto-identifié, âge, indice de masse corporelle, niveau de scolarité le plus élevé, revenu du ménage, état de santé autoévalué et sentiment d'appartenance à la communauté. RéSULTATS: Environ 56,6 % des adultes vivant en milieu rural et 59,3 % des adultes en milieu urbain ont déclaré avoir atteint les niveaux d'AP recommandés lorsque l'emplacement a été examiné comme seul prédicteur de l'activité. Le meilleur modèle après ajustement pour tous les facteurs au niveau individuel a révélé une interaction significative entre les variables sexe x emplacement. Les hommes des communautés rurales étaient plus susceptibles de déclarer respecter les directives d'AP (odds = 0,90 ou 47,4 %) que ceux des zones urbaines (odds = 0,78 ou 43,8 %), tandis que les femmes vivant dans les communautés rurales (odds = 0,58 ou 36,7 %) étaient moins susceptibles de déclarer avoir respecté les directives d'AP par rapport à celles des communautés urbaines (odds = 0,65 ou 39,4 %). CONCLUSION: L'association entre la ruralité d'une communauté et la déclaration des AP semble dépendre des différences sexuelles auto-identifiées. Les travaux futurs devraient explorer comment les variables liées au sexe et au lieu interagissent pour influencer la participation rapportée des Canadiens aux taux AP rapportés.


Assuntos
Exercício Físico , Fidelidade a Diretrizes , População Rural , População Urbana , Adulto , Canadá , Estudos Transversais , Feminino , Fidelidade a Diretrizes/estatística & dados numéricos , Guias como Assunto , Humanos , Masculino , População Rural/estatística & dados numéricos , Autorrelato , População Urbana/estatística & dados numéricos
10.
Neurobiol Aging ; 94: 1-6, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32497876

RESUMO

Oophorectomy prior to menopause is associated with late-life dementia. Memory decline may start within 6 months after oophorectomy in middle-aged women, suggested by lower verbal and working memory performance. Unknown is whether such changes persist beyond 6 months, and whether they are reversed by estradiol. Short-term benefits of estradiol on verbal memory following oophorectomy were observed in one study, but longer term effects remain unknown. In the present study, middle-aged BRCA1/2 mutation carriers with early oophorectomy at least 1 year prior to study onset were tested on verbal and working memory with results stratified by (1) current estradiol use (n = 22) or (2) no history of estradiol use (n = 24), and compared to age-matched premenopausal controls (n = 25). Both memory abilities were adversely affected by oophorectomy, but only working memory was maintained by estradiol. Estrogen metabolite levels correlated with working memory, suggesting a role for estradiol in preserving this ability. Memory decline appears to persist after early oophorectomy, particularly for women who do not take estradiol.


Assuntos
Cognição , Demência/etiologia , Menopausa , Salpingo-Ooforectomia/efeitos adversos , Adulto , Fatores Etários , Proteína BRCA2/genética , Demência/prevenção & controle , Demência/psicologia , Estradiol/administração & dosagem , Feminino , Heterozigoto , Humanos , Transtornos da Memória/etiologia , Transtornos da Memória/prevenção & controle , Transtornos da Memória/psicologia , Memória de Curto Prazo , Pessoa de Meia-Idade , Fatores de Tempo , Ubiquitina-Proteína Ligases/genética
11.
Menopause ; 26(1): 45-65, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-29994973

RESUMO

OBJECTIVE: Recent evidence suggests that early or induced menopause increases the risk for cognitive impairment and dementia. Given the potential for different cognitive outcomes due to menopause types, it is important that present research on menopause and cognition distinguishes between types. The aim of this project was to determine to what extent research looking at cognition in postmenopausal women published in one year, 2016, accounted for menopausal type. METHODS: We searched MEDLINE, EMBASE, and PsychINFO using keywords and MeSH terms for menopause and cognition. We included any research paper reporting a cognitive outcome measure in a menopausal human population. Differentiation between the types of menopause was defined by four categories: undifferentiated, demographic differentiation (menopause type reported but not analyzed), partial differentiation (some but not all types analyzed), and full differentiation (menopause types factored into analysis, or recruitment of only one type). RESULTS: Fifty research articles were found and analyzed. Differentiation was distributed as follows: undifferentiated, 38% (19 articles); demographic differentiation, 16% (8); partial differentiation, 28% (14); and full differentiation, 18% (9). CONCLUSIONS: This review revealed that although some clinical studies differentiated between the many menopauses, most did not. This may limit their relevance to clinical practice. We found that when menopause types are distinguished, the differing cognitive outcomes of each type are clarified, yielding the strongest evidence, which in turn will be able to inform best clinical practice for treating all women.


Assuntos
Cognição/fisiologia , Disfunção Cognitiva , Menopausa/fisiologia , Menopausa/psicologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Envelhecimento/fisiologia , Envelhecimento/psicologia , Feminino , Humanos , Pessoa de Meia-Idade , Terminologia como Assunto , Adulto Jovem
13.
J Health Psychol ; 22(12): 1563-1569, 2017 10.
Artigo em Inglês | MEDLINE | ID: mdl-26929171

RESUMO

This brief report tests the mediating effect of self-esteem in the relationship between body dissatisfaction and symptoms of depression and anxiety. A sample of 409 adolescents (females = 58.4%) aged between 14 and 18 years completed the Rosenberg Self-Esteem Scale, the Contour Drawing Rating Scale, the Multidimensional Anxiety Scale for Children, and the Center for Epidemiologic Studies Depression Scale. Overall, results for the indirect effects analysis were significant for both anxiety and depression, which confirmed the mediating role of self-esteem. Thus, a negative perception of one's body image has the effect of lowering self-esteem, which in turn increases psychological distress.


Assuntos
Ansiedade/psicologia , Imagem Corporal/psicologia , Depressão/psicologia , Autoimagem , Estresse Psicológico/psicologia , Adolescente , Ansiedade/diagnóstico , Estudos Transversais , Depressão/diagnóstico , Feminino , Humanos , Masculino , Escalas de Graduação Psiquiátrica , Estresse Psicológico/diagnóstico
14.
Psychoneuroendocrinology ; 72: 119-30, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27398882

RESUMO

This study assessed sexual orientation and psychobiological stress indices in relation to salivary sex hormones as part of a well-validated laboratory-based stress paradigm. Participants included 87 healthy adults that were on average 25 years old who self-identified as lesbian/bisexual women (n=20), heterosexual women (n=21), gay/bisexual men (n=26), and heterosexual men (n=20). Two saliva samples were collected fifteen minutes before and fifteen minutes after exposure to a modified Trier Social Stress Test to determine testosterone, estradiol, and progesterone concentrations via enzyme-immune assaying. Mean sex hormones were further tested in association to stress indices related to cortisol systemic output (area under the curve with respect to ground) based on ten measures throughout the two-hour visit, allostatic load indexed using 21 biomarkers, and perceived stress assessed using a well-validated questionnaire. Results revealed that lesbian/bisexual women had higher overall testosterone and progesterone concentrations than heterosexual women, while no differences were found among gay/bisexual men in comparison to heterosexual men. Lesbian/bisexual women and heterosexual men showed positive associations between mean estradiol concentrations and allostatic load, while gay/bisexual men and heterosexual women showed positive associations between mean testosterone and cortisol systemic output. In summary, sex hormone variations appear to vary according to sexual orientation among women, but also as a function of cortisol systemic output, allostatic load, and perceived stress for both sexes.


Assuntos
Alostase/fisiologia , Bissexualidade/fisiologia , Heterossexualidade/fisiologia , Homossexualidade Feminina , Homossexualidade Masculina , Hidrocortisona/metabolismo , Progesterona/metabolismo , Estresse Psicológico/metabolismo , Testosterona/metabolismo , Adulto , Sulfato de Desidroepiandrosterona/metabolismo , Estradiol/metabolismo , Feminino , Humanos , Masculino , Adulto Jovem
15.
Can J Public Health ; 107(1): e94-e99, 2016 06 27.
Artigo em Inglês | MEDLINE | ID: mdl-27348118

RESUMO

OBJECTIVES: A longer duration of homelessness is associated with poorer health outcomes. Following this logic, policies that aim to reduce repeated episodes of homelessness by addressing its root causes can result in better long-term health. This paper explores how many people return to the shelter in a Canadian context and examines factors related to returns to homelessness. METHODS: The sample included 634 adult men who participated in transitional programming at a large homeless shelter in Montreal, Quebec between 2011 and 2014. Descriptive statistics, survival analysis and multinomial logistic regression techniques were used to examine how psychosocial elements, demographic characteristics and contextual factors were related to returns to the shelter over a one-year follow-up period. RESULTS: Approximately 38% of the sample returned to the shelter within a year of program departure. A return was positively associated with a lack of support from friends and family (p < 0.05) and an imposed departure from the shelter (p < 0.05). Poor support was also associated with a faster time to return (p < 0.05) to the shelter, as was an imposed departure (p < 0.01). CONCLUSIONS: Building social networks and altering programs to accommodate those at high risk of an imposed departure may lead to fewer returns to homelessness and subsequently better health outcomes.


Assuntos
Habitação/estatística & dados numéricos , Pessoas Mal Alojadas/psicologia , Adulto , Família/psicologia , Seguimentos , Amigos/psicologia , Pessoas Mal Alojadas/estatística & dados numéricos , Humanos , Masculino , Quebeque , Fatores de Risco , Apoio Social
16.
Anxiety Stress Coping ; 29(5): 479-96, 2016 09.
Artigo em Inglês | MEDLINE | ID: mdl-26419271

RESUMO

BACKGROUND: Our knowledge with respect to psychological, endocrine, and neural correlates of attentional bias in individuals with high vulnerability to developing depression - the subclinically depressed, still remains limited. DESIGN: The study used a 2 × 2 mixed design. METHODS: Attentional bias toward happy and sad faces in healthy (N = 26) and subclinically depressed individuals (N = 22) was assessed via a neuroimaging dot-probe attention task. Participants also completed trait and state psychological measures and provided saliva samples for cortisol analysis. RESULTS: The subclinical group showed attentional bias toward happy faces; past use of problem-focused coping strategies when dealing with a personally relevant stressor as well as state levels of anxiety, together, contributed to this bias. In the control group, the happy attentional bias was positively correlated with activity in the right caudate. In the subclinical group, the bias was negatively associated with the left fusiform gyrus and positively with the left inferior parietal lobule and bilateral putamen. We observed group differences in association between cortisol levels during the task and neural activity during happy attentional bias processing within the key regions involved in attention. CONCLUSIONS: The attentional bias toward happy faces may reflect an active coping attempt by the subclinical participants.


Assuntos
Viés de Atenção/fisiologia , Encéfalo/fisiopatologia , Transtorno Depressivo/metabolismo , Transtorno Depressivo/psicologia , Hidrocortisona/metabolismo , Adaptação Psicológica/fisiologia , Adulto , Transtorno Depressivo/fisiopatologia , Face , Feminino , Felicidade , Humanos , Imageamento por Ressonância Magnética , Masculino , Saliva/metabolismo , Análise e Desempenho de Tarefas , Adulto Jovem
17.
Soc Cogn Affect Neurosci ; 9(10): 1632-44, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-24078020

RESUMO

This study aimed to identify vulnerability patterns in psychological, physiological and neural responses to mild psychosocial challenge in a population that is at a direct risk of developing depression, but who has not as yet succumbed to the full clinical syndrome. A group of healthy and a group of subclinically depressed participants underwent a modified Montreal Imaging Stress task (MIST), a mild neuroimaging psychosocial task and completed state self-esteem and mood measures. Cortisol levels were assessed throughout the session. All participants showed a decrease in performance self-esteem levels following the MIST. Yet, the decline in performance self-esteem levels was associated with increased levels of anxiety and confusion in the healthy group, but increased levels of depression in the subclinical group, following the MIST. The subclinical group showed overall lower cortisol levels compared with the healthy group. The degree of change in activity in the subgenual anterior cingulate cortex in response to negative evaluation was associated with increased levels of depression in the whole sample. Findings suggest that even in response to a mild psychosocial challenge, those individuals vulnerable to depression already show important maladaptive response patterns at psychological and neural levels. The findings point to important targets for future interventions.


Assuntos
Encéfalo/patologia , Depressão , Hidrocortisona/metabolismo , Comportamento Social , Adolescente , Adulto , Análise de Variância , Atenção/fisiologia , Encéfalo/irrigação sanguínea , Depressão/metabolismo , Depressão/patologia , Depressão/psicologia , Feminino , Humanos , Processamento de Imagem Assistida por Computador , Imageamento por Ressonância Magnética , Masculino , Oxigênio/sangue , Escalas de Graduação Psiquiátrica , Saliva/metabolismo , Autoimagem , Inquéritos e Questionários , Adulto Jovem
18.
Psychoneuroendocrinology ; 38(12): 3155-9, 2013 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-24055042

RESUMO

The relation between the physiologic and subjective stress responses is inconsistently reported across studies. Menstrual cycle phases variations have been found to influence the psychophysiological stress response; however little is known about possible cycle phase differences in the relationship between physiological and subjective stress responses. This study examined the effect of menstrual cycle phase in the association between subjective stress and physiological response. Forty-five women in either the follicular (n=21) or the luteal phase of the menstrual cycle were exposed to a psychosocial stress task. Salivary cortisol, cardiovascular, and subjective stress were assessed throughout the experiment. Results revealed a significant group difference in the association between peak levels of cortisol and post task subjective stress. In women in the follicular phase a negative association was observed (r(2)=0.199, p=0.04), while this relation was positive in the group of women in the luteal phase (r(2)=0.227, p=0.02). These findings suggest a possible role of sex hormones in modulating the cortisol stress response function in emotion regulation.


Assuntos
Hidrocortisona/metabolismo , Menstruação/metabolismo , Menstruação/psicologia , Estresse Psicológico/metabolismo , Estresse Psicológico/psicologia , Envelhecimento/fisiologia , Envelhecimento/psicologia , Análise de Variância , Feminino , Fase Folicular/metabolismo , Fase Folicular/psicologia , Hemodinâmica/fisiologia , Humanos , Fase Luteal/metabolismo , Fase Luteal/psicologia , Saliva/química , Saliva/metabolismo , Adulto Jovem
19.
Psychoneuroendocrinology ; 38(8): 1328-37, 2013 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-23246327

RESUMO

Most psychosocial stress studies assess the overall cortisol response without further identifying the temporal dynamics within hormone levels. It has been shown, however, that the amplitude of anticipatory cortisol stress levels has a unique predictive value for psychological health. So far, no "best practice" in how to investigate the anticipatory cortisol stress response has emerged. The goal of the current research was to develop a protocol that would allow for a sensitive and easy-to-implement laboratory-based investigation into anticipatory cortisol stress levels. We initially tested 26 healthy men in either an anticipation- or stress-only condition of the Trier Social Stress Test (TSST) to map the distinct timelines of anticipatory and reactive cortisol release profiles (study 1). Subsequently, we administered the TSST to 50 healthy men such that the cortisol responses to anticipatory and reactive stress components could be dissociated (study 2). In both studies we sampled saliva cortisol at high frequency (at baseline, during 10min of anticipation and during and after 10min of acute stress) and the current mood state pre- and post-stress. We found anticipatory responder rates of 20% and 40%, with peak anticipatory cortisol levels between 14 and 20min after onset of anticipation. Visible changes in reactive cortisol levels occurred only after the termination of the acute stressor. We conclude that the best practice to detect a maximum number of anticipatory responders in the TSST would be to extend the anticipation phase to 15min. In doing so, the anticipatory cortisol peak could be captured at a time-point of the actual stressor that is uninfluenced by reactive cortisol levels. Overall, we could reveal several features of anticipatory responders. Most importantly, there was a positive correlation between anticipatory and reactive stress responses. There was no association between anticipatory cortisol and alpha-amylase as well as subjective-psychological stress responses. Future studies will have to determine whether the anticipatory responders differ with respect to various stress-sensitive parameters like sex, personality, psychological wellbeing or chronic stress.


Assuntos
Antecipação Psicológica/fisiologia , Hidrocortisona/metabolismo , Estresse Psicológico/metabolismo , Adolescente , Adulto , Afeto/fisiologia , Humanos , Masculino , Saliva/metabolismo , Estresse Psicológico/psicologia , Fatores de Tempo , alfa-Amilases/metabolismo
20.
Psychoneuroendocrinology ; 36(9): 1294-302, 2011 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-21470780

RESUMO

Stress is a multidimensional construct. To accurately represent stress physiology, multiple stress measures across multiple stress-related systems should be assessed. However, associations may be masked given that different systems underlie different time courses. Salivary cortisol and alpha-amylase (sAA) are reliable biological stress markers of the sympathetic nervous system (SNS) and the hypothalamus pituitary adrenal (HPA) axis, respectively. Studies examining the link between sAA and cortisol levels in response to stress have produced inconsistent results. Here, we investigated whether the covariance of stress-induced sAA and cortisol release is dependent on the distinct temporal dynamics of the two stress markers. A total of 50 male participants were exposed to a psychological laboratory stressor with high frequency (2-min interval) saliva sampling in two independent studies. Synchronized time series of sAA and cortisol measures before, during and after stress induction were obtained. Cross-correlation analysis was applied to test for the association of sAA and cortisol levels at various stages relative to the onset of the stressor. Positive and negative cross-correlations between lagged pairs of sAA and cortisol measures were found in both studies. The strongest correlation was found for sAA preceding cortisol release by 13.5 min (r = .27, p < .001). With a smaller effect size cortisol also significantly preceded sAA by 13.5 min (r = -.16, p < .001). We suggest that sAA and cortisol stress responses are reliably associated at various time lags throughout a stressful situation. As a possible connection site between HPA axis and SNS that may underlie sAA-cortisol associations, we discuss CRF neurons of the hypothalamus involved in sympathetic regulation.


Assuntos
Hidrocortisona/metabolismo , Saliva/metabolismo , Estresse Psicológico/metabolismo , alfa-Amilases/metabolismo , Adolescente , Adulto , Humanos , Hidrocortisona/análise , Sistema Hipotálamo-Hipofisário/metabolismo , Masculino , Testes Neuropsicológicos , Sistema Hipófise-Suprarrenal/metabolismo , Tempo de Reação/fisiologia , Saliva/química , Fatores de Tempo , Adulto Jovem , alfa-Amilases/análise
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