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https://www.readbyqxmd.com/read/28546677/longitudinal-and-immediate-effect-of-kundalini-yoga-on-salivary-levels-of-cortisol-and-activity-of-alpha-amylase-and-its-effect-on-perceived-stress
#1
Jocelyn N García-Sesnich, Mauricio Garrido Flores, Marcela Hernández Ríos, Jorge Gamonal Aravena
CONTEXT: Stress is defined as an alteration of an organism's balance in response to a demand perceived from the environment. Diverse methods exist to evaluate physiological response. A noninvasive method is salivary measurement of cortisol and alpha-amylase. A growing body of evidence suggests that the regular practice of Yoga would be an effective treatment for stress. AIMS: To determine the Kundalini Yoga (KY) effect, immediate and after 3 months of regular practice, on the perception of psychological stress and the salivary levels of cortisol and alpha-amylase activity...
May 2017: International Journal of Yoga
https://www.readbyqxmd.com/read/28546084/-sex-differences-in-a-real-academic-stressor-cognitive-appraisal-and-the-cortisol-response
#2
Susanne Helbig, Jutta Backhaus
Women and men differ in their physiological and psychological stress response but only a few studies have analyzed this sex difference in a naturalistic setting and focused on cognitive stress appraisal. In the present study, the salivary cortisol concentration of 24 female and 22 male subjects was measured before and several times after an oral academic presentation given by themselves (stress condition) or given by a fellow student (control condition). Feelings of subjective stress and nervousness were assessed simultaneously to the saliva samples and a questionnaire for cognitive stress appraisal was conducted right before the oral presentation...
May 22, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28539532/relationship-between-sociability-toward-humans-and-physiological-stress-in-dogs
#3
Yoon-Joo Shin, Nam-Shik Shin
Sociability is an essential trait for dogs to successfully interact with humans. In this study, the relationship between sociability and physiological stress was examined. Additionally, whether differences exist between companion dogs (C group) and shelter dogs (S group) was examined. Overall, healthy 37 dogs (C group=21 and S group=16) were examined. After 5 min of walking, the dog and the owner (or the chief manager) rested freely in the experimental location for 5 min. The behavioral test with 6 categories was conducted to evaluate sociability over 4 min...
May 25, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28528891/salivary-steroids-hormones-well-being-and-physical-performance-during-an-intensification-training-period-followed-by-a-tapering-period-in-youth-rhythmic-gymnasts
#4
Kizzy Antualpa, Marcelo Saldanha Aoki, Alexandre Moreira
This study examined the effect of an intensification period (IT; 4weeks; after a habitual training period; HT) followed by a tapering period (TP; 2weeks) on salivary hormones (testosterone - T and cortisol - C), well-being (WB), and physical performance in 23 rhythmic gymnasts (RG; Under-11 group [G1], Under-13 group [G2], and >13 group [G3]). The session-rating of perceived exertion was used to quantify the daily internal training load (ITL). The WB questionnaire was completed daily. Physical performance tests and saliva sampling were carried out at the beginning of the IT (T1), after IT (T2), and after TP (T3)...
May 18, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28527679/salivary-steroid-response-and-competitive-anxiety-in-elite-basketball-players-effect-of-opponent-level
#5
Ademir F S Arruda, Marcelo S Aoki, Ana Carolina Paludo, Alexandre Moreira
This study examined the effect of playing matches against different opponent teams (hard match; HM, medium match; MM, and easy match; EM) on pre-match testosterone concentration (T), pre-to-post match cortisol (C) concentration, and pre-competitive anxiety (CSAI-2 questionnaire) in 20 elite male basketball players. One training session (TS) was also assessed (control condition). Saliva steroids were determined by ELISA. The pre-T concentration was significantly lower for the TS (163±54pmolL(-1)), compared to the three official matches (EM: 208±82pmolL(-1), MM: 213±57pmolL(-1), and HM: 218±37pmolL(-1)) (p<0...
May 17, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28527589/competition-related-testosterone-cortisol-and-perceived-personal-success-in-recreational-women-athletes
#6
Kathleen V Casto, Aileen Rivell, David A Edwards
Thirty-five women participating in one or more intramural flag-football games provided saliva samples before, immediately after, and 10min after competition and completed an after-competition questionnaire appraising their own performance during the game. As seen in other studies of elite athletes, these recreational athletes, on average, showed significant elevations in testosterone (T) and cortisol (C) across the competition period - the "competition effect". In winners and losers, T levels at all time points measured were positively related to athletes' appraisals of their own individual performance...
May 17, 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/28526030/prenatal-bisphenol-a-exposure-and-dysregulation-of-infant-hypothalamic-pituitary-adrenal-axis-function-findings-from-the-apron-cohort-study
#7
Gerald F Giesbrecht, Maede Ejaredar, Jiaying Liu, Jenna Thomas, Nicole Letourneau, Tavis Campbell, Jonathan W Martin, Deborah Dewey
BACKGROUND: Animal models show that prenatal bisphenol A (BPA) exposure leads to sexually dimorphic disruption of the neuroendocrine system in offspring, including the hypothalamic-pituitary-adrenal (HPA) neuroendocrine system, but human data are lacking. In humans, prenatal BPA exposure is associated with sex-specific behavioural problems in children, and HPA axis dysregulation may be a biological mechanism. The objective of the current study was to examine sex differences in associations between prenatal maternal urinary BPA concentration and HPA axis function in 3 month old infants...
May 19, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28521309/care-transitions-and-adult-day-services-moderate-the-longitudinal-links-between-stress-biomarkers-and-family-caregivers-functional-health
#8
Yin Liu, David M Almeida, Michael J Rovine, Steven H Zarit
BACKGROUND: Stress biomarkers have been linked to health and well-being. There are, however, few studies on how dysregulation in the hypothalamic-pituitary-adrenal axis and sympathetic nervous system actually affects functional health of family caregivers of persons with dementia. Further, it is not clear whether and how factors affecting caregiving stressor exposures such as care transitions and adult day services (ADS) use may affect such association. OBJECTIVE: First, to examine the association of daily stress biomarkers and functional health over time among family caregivers of persons with dementia...
May 19, 2017: Gerontology
https://www.readbyqxmd.com/read/28515946/the-responses-of-subjective-feeling-task-performance-ability-cortisol-and-hrv-for-the-various-types-of-floor-impact-sound-a-pilot-study
#9
Seok Hyeon Yun, Sang Jin Park, Chang Sun Sim, Joo Hyun Sung, Ahra Kim, Jang Myeong Lee, Sang Hyun Lee, Jiho Lee
BACKGROUND: Recently, noise coming from the neighborhood via floor wall has become a great social problem. The noise between the floors can be a cause of physical and psychological problems, and the different types of floor impact sound (FIS) may have the different effects on the human's body and mind. The purpose of this study is to assess the responses of subjective feeling, task performance ability, cortisol and HRV for the various types of floor impact. METHODS: Ten men and 5 women were enrolled in our study, and the English listening test was performed under the twelve different types of FIS, which were made by the combinations of bang machine (B), tapping machine (T), impact ball (I) and sound-proof mattress (M)...
2017: Annals of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28511046/effects-of-stress-on-women-s-preference-for-male-facial-masculinity-and-their-endocrine-correlates
#10
Beate Ditzen, Simona Palm-Fischbacher, Lara Gossweiler, Livia Stucky, Ulrike Ehlert
Women's preferences for masculinity in men's faces seem to vary across the menstrual cycle and are assumed to be strongest around ovulation. A number of hormones have been proposed to underlie these subtle cyclic shifts. Furthermore, mating preferences are context-dependent, and stress has been found to alter mate choice, both in animals and humans. Currently, the effects of stress on women's preference for masculinity remain unknown. To examine the hormonal basis and the impact of stress on facial masculinity preference, we tested for within-subject changes in 52 healthy young women who underwent the Trier Social Stress Test (TSST) and the placebo-TSST in randomized order in the late follicular and mid-luteal phases of their menstrual cycle...
May 3, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28505199/stress-and-salivary-cortisol-in-emergency-medical-dispatchers-a-randomized-shifts-control-trial
#11
Sarah Bedini, François Braun, Laurence Weibel, Michel Aussedat, Bruno Pereira, Frédéric Dutheil
Stress at work is a public health concern. Phone operators in emergency medical dispatch centers are particularly at risk. We aimed to demonstrate that the most stressful time for emergency medical dispatchers is the shift when they receive emergency incoming calls, with cortisol as a biomarker of stress. For each emergency medical dispatcher, we measured outcomes over a control day and during three types of shift: Incoming emergency call, Dispatch and Re-assessment. The pattern of shifts was randomized. Saliva was sampled every 15 minutes for 2 hours, i...
2017: PloS One
https://www.readbyqxmd.com/read/28504492/salivary-and-serum-cortisol-levels-in-newborn-infants
#12
María V Forclaz, Eduardo Moratto, Alicia Pennisi, Silvina Falco, Graciela Olsen, Patricia Rodríguez, Regina Papazian, Ignacio Bergadá
INTRODUCTION: Given that serum cortisol level interpretation in newborn infants (NBIs) is hard, the objective of this study was to correlate baseline salivary and serum cortisol levels and to describe salivary cortisol levels in the first month of life. POPULATION AND METHODS: Descriptive, prospective, longitudinal, and correlational study. Term NBIs were selected from the Division of Neonatology of Hospital Nacional Profesor Alejandro Posadas in 2014. Cortisol was measured in saliva specimens while cortisol, cortisol-binding globulin, and albumin were measured in blood specimens...
June 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28498527/adolescent-conflict-appraisals-moderate-the-link-between-marital-conflict-and-physiological-stress-reactivity
#13
Rachel G Lucas-Thompson, Erika S Lunkenheimer, Douglas A Granger
The goal of this study was to advance understanding of how adolescent conflict appraisals contribute uniquely, and in combination with interparental conflict behavior, to individual differences in adolescent physiological reactivity. Saliva samples were collected from 153 adolescents (52% female; ages 10-17 years) before and after the Trier Social Stress Test. Saliva was assayed for cortisol and alpha-amylase. Results revealed interactive effects between marital conflict and conflict appraisals. For youth who appraised parental conflict negatively (particularly as threatening), negative marital conflict predicted dampened reactivity; for youth who appraised parental conflict less negatively, negative marital conflict predicted heightened reactivity...
March 2017: Journal of Research on Adolescence: the Official Journal of the Society for Research on Adolescence
https://www.readbyqxmd.com/read/28491342/hair-cortisol-and-lifetime-discrimination-moderation-by-subjective-social-status
#14
Kymberlee M O'Brien, Jerrold Meyer, Edward Tronick, Celia L Moore
Discrimination has been associated with elevated cortisol as measured in saliva, blood, and urine. This study investigated the association between lifetime discrimination and hair cortisol concentrations, considered a measure of chronic stress. We recruited 180 young adults from diverse backgrounds. Participant responses to lifetime discrimination, home stress, and subjective status measures were recorded. Lifetime discrimination significantly predicted hair cortisol concentrations, supporting past research that discrimination experiences impact neuroendocrine systems...
January 2017: Health Psychology Open
https://www.readbyqxmd.com/read/28484379/testosterone-and-cortisol-jointly-predict-the-ambiguity-premium-in-an-ellsberg-urns-experiment
#15
Giuseppe Danese, Eugénia Fernandes, Neil V Watson, Samuele Zilioli
Previous literature has tried to establish whether and how steroid hormones are related to economic risk-taking. In this study, we investigate the relationship between testosterone (T) and cortisol (C) on one side and attitudes toward risk and ambiguity on the other. We asked 78 male undergraduate students to complete several tasks and provide two saliva samples. In the task "Reveal the Bag," participants expressed their beliefs on an ambiguous situation in an incentivized framework. In the task "Ellsberg Bags," we elicited from the participants through an incentive-compatible mechanism the reservation prices for a risky bet and an ambiguous bet...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28468292/stress-in-school-some-empirical-hints-on-the-circadian-cortisol-rhythm-of-children-in-outdoor-and-indoor-classes
#16
Ulrich Dettweiler, Christoph Becker, Bjørn H Auestad, Perikles Simon, Peter Kirsch
This prospective longitudinal survey compared the stress levels of students taught using an outdoor curriculum in a forest, with children in a normal school setting. We were especially interested in the effect outdoor teaching might have on the children's normal diurnal cortisol rhythm. 48 children (mean age = 11.23; standard deviation (SD) = 0.46) were enrolled, with 37 in the intervention group (IG), and 11 in the control group (CG). The intervention consisted of one full school day per week in the forest over the school year...
April 30, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28466664/increasing-levels-of-saliva-alpha-amylase-in-electrohypersensitive-ehs-patients
#17
Soafara Andrianome, Laurent Hugueville, René de Seze, Brahim Selmaoui
THE PURPOSE: The objective of this study was to assess the level of various salivary and urinary markers of patients with EHS and to compare them with those of the healthy control group. MATERIALS AND METHODS: We analyzed samples from 30 EHS individuals and a matched control group of 25 individuals (non EHS) aged between 22 and 66. We quantified cortisol both in saliva and urine, alpha amylase (sAA), immunoglobulin A and C Reactive Protein levels in saliva and neopterin in urine (uNeopterin)...
May 3, 2017: International Journal of Radiation Biology
https://www.readbyqxmd.com/read/28452825/joint-impact-of-early-life-adversity-and-comt-val158met-rs4680-genotypes-on-the-adult-cortisol-response-to-psychological-stress
#18
William R Lovallo, Mary-Anne Enoch, Kristen H Sorocco, Andrea S Vincent, Ashley Acheson, Andrew J Cohoon, Colin A Hodgkinson, David Goldman
OBJECTIVE: Exposure to stress during critical periods of development can diminish stress reactivity by the hypothalamic-pituitary-adrenocortical axis. Genetic characteristics may further modify this effect of early adversity, leading to a gene-by-environment (G x E) interaction on stress reactivity in adulthood. Val-allele carriers of a common polymorphism of the COMT gene (Val158Met, rs4680) have rapid removal of catecholamines in the prefrontal cortex, limbic system, and reward centers...
April 27, 2017: Psychosomatic Medicine
https://www.readbyqxmd.com/read/28444531/multifaceted-sexual-desire-and-hormonal-associations-accounting-for-social-location-relationship-status-and-desire-target
#19
Sara B Chadwick, Shannon M Burke, Katherine L Goldey, Sari M van Anders
Sexual desire is typically measured as a unitary erotic phenomenon and is often assumed by biological and biomedical researchers, as well as the lay public, to be directly connected to physiological parameters like testosterone (T). In the present study, we empirically examined how conceptualizing sexual desire as multifaceted might clarify associations with T and contextual variables. To do so, we used the Sexual Desire Questionnaire (DESQ), which assesses multifaceted dyadic sexual desire, to explore how contextual variables such as social location, relationship status, and desire target (e...
April 25, 2017: Archives of Sexual Behavior
https://www.readbyqxmd.com/read/28444055/prospects-of-studies-on-violence-adolescence-and-cortisol-a-systematic-literature-review
#20
Leonardo Planel Lugarinho, Joviana Quintes Avanci, Liana Wernersbach Pinto
Violence has a negative impact on adolescents and affects their quality of life. It causes stress and requires the victim's adaptive capacity, which can cause psychological and biological changes. Hormone cortisol levels have been used as stress biomarker in several studies. This paper aims to perform a systematic literature review of publications on cortisol and violence involving teenagers from 2000 to 2013. Descriptors "cortisol", "violence" and "adolescent" were used in both English and Portuguese in this review, which included bibliographic databases PubMed/Medline, Lilacs, BVS and SciELO...
April 2017: Ciência & Saúde Coletiva
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