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https://www.readbyqxmd.com/read/29425971/competition-stage-influences-perceived-performance-but-does-not-affect-rating-of-perceived-exertion-and-salivary-neuro-endocrine-immune-markers-in-elite-young-basketball-players
#1
Ademir Felipe Schultz de Arruda, Marcelo Saldanha Aoki, Ana Carolina Paludo, Gustavo Drago, Alexandre Moreira
This study examined the effects of competition stage on the salivary concentration of testosterone (T), cortisol (C), alpha-amylase (sAA), and IL-1ß cytokine, perceived performance (PP) and session rating of perceived exertion (session-RPE) in elite youth basketball players (age, 15.8 ± 0.8 yrs.; stature, 190.9 ± 7.9 cm; body mass, 90.0 ± 16.9 kg) from two age-categories (U16; n = 7; U17; n = 7). Two winning playoff matches (FM; playing for the championship; 1 for each age-category) and two winning regular stage matches (RM; 1 for each age category, played against opponents ranked 2nd place), were assessed in the current study...
February 6, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29353364/testosterone-and-proactive-reactive-aggression-in-youth-the-moderating-role-of-harsh-discipline
#2
Frances R Chen, Adrian Raine, Douglas A Granger
This study tests a biosocial model of the link between testosterone and proactive-reactive aggression in youth at varying levels of harsh discipline. Given that proactive aggression is used to gain power and status and the importance of social learning in its formation, we hypothesized that testosterone would be associated with proactive aggression at higher levels of harsh discipline, and that this relationship would be more pronounced in boys than girls. Participants (n = 445; 50% male; M age = 11...
January 20, 2018: Journal of Abnormal Child Psychology
https://www.readbyqxmd.com/read/29336775/neural-correlates-of-emotional-action-control-in-anger-prone-women-with-borderline-personality-disorder
#3
Katja Bertsch, Karin Roelofs, Paul Jonathan Roch, Bo Ma, Saskia Hensel, Sabine C Herpertz, Inge Volman
BACKGROUND: Difficulty in controlling emotional impulses is a crucial component of borderline personality disorder (BPD) that often leads to destructive, impulsive behaviours against others. In line with recent findings in aggressive individuals, deficits in prefrontal amygdala coupling during emotional action control may account for these symptoms. METHODS: To study the neurobiological correlates of altered emotional action control in individuals with BPD, we asked medication-free, anger-prone, female patients with BPD and age- and intelligence-matched healthy women to take part in an approach-avoidance task while lying in an MRI scanner...
January 12, 2018: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/29246659/bayesian-informed-evidence-against-modulation-of-androstadienone-effects-by-genotypic-receptor-variants-and-participant-sex-a-study-assessing-stroop-interference-control-mood-and-olfaction
#4
Jonas Hornung, Hannes Noack, Mara Thomas, Gisbert Farger, Vanessa Nieratschker, Jessica Freiherr, Birgit Derntl
The androgen derivative androstadienone (AND) is present in human sweat and may act as human chemosignal. Though effects of AND have been reported with respect to emotional and cognitive processes, results have been highly inconsistent. For this reason, it is likely that AND-action is dependent on modulatory factors. Here we wanted to specifically investigate the impact of genotypic variations of the AND-receptor OR7D4, as well as the influence of participant sex and concomitant hormonal fluctuations on AND-action during emotional interference processing, olfactory performance and mood assessments...
December 12, 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/29197795/reproductive-steroids-and-adhd-symptoms-across-the-menstrual-cycle
#5
Bethan Roberts, Tory Eisenlohr-Moul, Michelle M Martel
Although Attention-Deficit/Hyperactivity Disorder shows (ADHD) male predominance, females are significantly impaired and exhibit additional comorbid disorders during adolescence. However, no empirical work has examined the influence of cyclical fluctuating steroids on ADHD symptoms in women. The present study examined estradiol (E2), progesterone (P4), and testosterone (T) associations with ADHD symptoms across the menstrual cycle in regularly-cycling young women (N=32), examining trait impulsivity as a moderator...
November 28, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29195161/prenatal-and-pubertal-testosterone-affect-brain-lateralization
#6
T Beking, R H Geuze, M van Faassen, I P Kema, B P C Kreukels, T G G Groothuis
After decades of research, the influence of prenatal testosterone on brain lateralization is still elusive, whereas the influence of pubertal testosterone on functional brain lateralization has not been investigated, although there is increasing evidence that testosterone affects the brain in puberty. We performed a longitudinal study, investigating the relationship between prenatal testosterone concentrations in amniotic fluid, pubertal testosterone concentrations in saliva, and brain lateralization (measured with functional Transcranial Doppler ultrasonography (fTCD)) of the Mental Rotation, Chimeric Faces and Word Generation tasks...
November 6, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29175736/brain-structural-connectivity-during-adrenarche-associations-between-hormone-levels-and-white-matter-microstructure
#7
Marjolein E A Barendse, Julian G Simmons, Michelle L Byrne, Marc L Seal, George Patton, Lisa Mundy, Stephen J Wood, Craig A Olsson, Nicholas B Allen, Sarah Whittle
Levels of the adrenal hormones dehydroepiandrosterone (DHEA), its sulfate (DHEAS), and testosterone, have all been linked to behavior and mental health during adrenarche, and preclinical studies suggest that these hormones influence brain development. However, little is known about how variation in these hormones is associated with white matter structure during this period of life. The current study aimed to examine associations between DHEA, DHEAS, and testosterone, and white matter microstructure during adrenarche...
November 16, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29171482/-sleep-quality-and-hormone-levels-in-the-morning-and-evening-hours-under-chemical-pollution
#8
R O Budkevich, E V Budkevich
AIM: To evaluate self-assessment of sleep and the level of hormones in the morning and evening in chemical pollution conditions. MATERIAL AND METHODS: Three hundred adolescent and adult men living in the regions with low and high levels of chemical pollution were examined using questionnaires for self-assessment of quality of sleep, sleep hygiene, daytime sleepiness. Levels of cortisol and testosterone in the saliva were determined in the morning and evening hours by ELISA...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/29161770/twin-models-of-environmental-and-genetic-influences-on-pubertal-development-salivary-testosterone-and-estradiol-in-adolescence
#9
Andrew D Grotzinger, Frank D Mann, Megan W Patterson, Kathrin Herzhoff, Jennifer L Tackett, Elliot M Tucker-Drob, K Paige Harden
OBJECTIVE: Research on sources of variation in adolescent's gonadal hormone levels is limited. We sought to decompose individual differences in adolescent testosterone, estradiol and pubertal status, into genetic and environmental components. DESIGN: A sample of male and female adolescent twins from the greater Austin and Houston areas provided salivary samples, with a subset of participants providing longitudinal data at two waves. PARTICIPANTS: The sample included 902 adolescent twins, 49% female, ages 13-20 years (M = 15...
November 21, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/29155118/patterns-of-neuroendocrine-coupling-in-9-year-old-children-effects-of-sex-body-mass-index-and-life-stress
#10
Sarah R Black, Matthew D Lerner, Elizabeth A Shirtcliff, Daniel N Klein
Previous investigations have explored stress and pubertal hormones in parallel; it has been a recent development, however, to explore the relationships between different hormones during puberty, and how this hormonal cross-talk may be influenced by the environment. The current study investigated neuroendocrine coupling, or the extent to which hormones are correlated within the individual, and also investigated early life stressors that may influence coupling. Participants were 405 adrenarcheal children (mean Tanner stage=1...
November 16, 2017: Biological Psychology
https://www.readbyqxmd.com/read/29145707/relationship-between-testosterone-in-serum-saliva-and-urine-during-treatment-with-intramuscular-testosterone-undecanoate-in-gender-dysphoria-and-male-hypogonadism
#11
Y Lood, E Aardal-Eriksson, C Webe, J Ahlner, B Ekman, J Wahlberg
Long-term testosterone replacement therapy is mainly monitored by trough levels of serum testosterone (S-T), while urinary testosterone (U-T) is used by forensic toxicology to evaluate testosterone doping. Testosterone in saliva (Sal-T) may provide additional information and simplify the sample collection. We aimed to investigate the relationships between testosterone measured in saliva, serum and urine during standard treatment with 1,000 mg testosterone undecanoate (TU) every 12th week during 1 year. This was an observational study...
November 16, 2017: Andrology
https://www.readbyqxmd.com/read/29094961/developmental-differences-in-reward-sensitivity-and-sensation-seeking-in-adolescence-testing-sex-specific-associations-with-gonadal-hormones-and-pubertal-development
#12
K Paige Harden, Frank D Mann, Andrew D Grotzinger, Megan W Patterson, Laurence Steinberg, Jennifer L Tackett, Elliot M Tucker-Drob
Sensation seeking has been found to increase, on average, from childhood to adolescence. Developmental scientists have hypothesized that this change could be driven by the rise of gonadal hormones at puberty, which affect reward-related processing in the brain. In a large, age-heterogeneous, population-based sample of adolescents and young adults (N = 810; ages 13-20 years), we tested for sex-specific associations between age, self-reported pubertal development, gonadal hormones (estradiol and testosterone) as measured in saliva, reward sensitivity as measured by a multivariate battery of in-laboratory tasks (including the Iowa gambling task, balloon analogue risk task, and stoplight task), and self-reported sensation seeking...
November 2, 2017: Journal of Personality and Social Psychology
https://www.readbyqxmd.com/read/29066595/physiological-effects-of-high-altitude-trekking-on-gonadal-thyroid-hormones-and-macrophage-migration-inhibitory-factor-mif-responses-in-young-lowlander-women
#13
Vittore Verratti, Francesca Ietta, Luana Paulesu, Roberta Romagnoli, Ilaria Ceccarelli, Christian Doria, Giorgio Fanò Illic, Camillo Di Giulio, Anna M Aloisi
Altitude hypoxia is often associated with impairment of human reproduction. In this study, hormones and macrophage migration inhibitory factor (MIF, a proinflammatory cytokine with key roles in human reproduction) were determined in seven regularly menstruating, lowlander native women living at sea level participating in 14 days of trekking at moderate and high altitude. Blood and saliva samples were collected from each subject at high altitude (5050 m a.s.l. [above sea level]), and at sea level before and after the expedition...
November 2017: Physiological Reports
https://www.readbyqxmd.com/read/28994489/short-term-resource-allocation-during-extensive-athletic-competition
#14
Daniel P Longman, Sean P Prall, Eric C Shattuck, Ian D Stephen, Jay T Stock, Jonathan C K Wells, Michael P Muehlenbein
OBJECTIVES: Following predictions from life history theory, we sought to identify acute trade-offs between reproductive effort (as measured by psychological arousal) and somatic maintenance (via functional measures of innate immunity) during conditions of severe energetic imbalance. METHODS: Sixty-six male ultramarathon runners (ages 20 to 37 years) were sampled before and after a lengthy race. Saliva and sera were collected for testosterone and immunological analyses (hemolytic complement activity and bacterial killing ability)...
October 10, 2017: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/28972598/evaluation-of-occupational-physical-load-during-6-month-international-crisis-management-operation
#15
Kai Pihlainen, Matti Santtila, Tommi Vasankari, Keijo Häkkinen, Heikki Kyröläinen
OBJECTIVES: Generally, operational military duties are associated with a variety of stressors, such as prolonged physical activity (PA). However, limited information is available on the occupational workload or changes in PA during international military operations. Thus, the aim of the study was to investigate the changes in body composition, stress biomarkers, PA, and heart rate (HR) responses of 79 male soldiers during a 6-month international crisis management operation. MATERIAL AND METHODS: Measurements were conducted 3 times in South-Lebanon during the operation...
October 2, 2017: International Journal of Occupational Medicine and Environmental Health
https://www.readbyqxmd.com/read/28888054/maternal-salivary-testosterone-in-pregnancy-and-fetal-neuromaturation
#16
Kristin M Voegtline, Kathleen A Costigan, Janet A DiPietro
Testosterone exposure during pregnancy has been hypothesized as a mechanism for sex differences in brain and behavioral development observed in the postnatal period. The current study documents the natural history of maternal salivary testosterone from 18 weeks gestation of pregnancy to 6 months postpartum, and investigates associations with fetal heart rate, motor activity, and their integration. Findings indicate maternal salivary testosterone increases with advancing gestation though no differences by fetal sex were detected...
September 9, 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28861683/neuroendocrine-response-to-school-load-in-prepubertal-children-focus-on-trait-anxiety
#17
D Kapsdorfer, N Hlavacova, D Vondrova, L Argalasova, L Sevcikova, Daniela Jezova
At the time of school-age, the most frequent stress stimuli are related to school environment and educational process. Anxiety may play a big role in coping with stressful situations associated with school load. To approach this issue, we performed a real-life study at school during the classwork. The sample consisted of 36 healthy children aged 10 years, which were divided to low and high trait anxiety group based on the median value of the anxiety score. The investigations were carried out in the classroom during a stress condition (final exams) and non-stress condition (without any exam)...
August 31, 2017: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/28813252/oxytocin-a-parenting-hormone
#18
REVIEW
Ruth Feldman, Marian J Bakermans-Kranenburg
In non-human mammals mothering is hormone-dependent, with crucial roles for oxytocin and prolactin. While human parenting is not hormone-dependent, hormonal changes in oxytocin, vasopressin, prolactin, testosterone, and cortisol prime and accompany the expression of parenting. In the following we focus on oxytocin (OT) as a key hormone in human parenting. OT is a nine-amino-acid neuropeptide hormone which evolved from the ancient vasotocin molecule approximately 650 MYO. OT is implicated in sociality across vertebrate evolution and substantial research has pinpointed its role in birth, lactation, and maternal care in mammals...
June 2017: Current Opinion in Psychology
https://www.readbyqxmd.com/read/28804963/effect-of-housing-system-on-reproductive-behaviour-and-on-some-endocrinological-and-seminal-parameters-of-donkey-stallions
#19
A Rota, M Sgorbini, D Panzani, F Bonelli, P Baragli, N Ille, D Gatta, C Sighieri, L Casini, M M Maggiorelli, C Aurich, F Camillo
Reproductive management of male donkeys employed for artificial breeding has been poorly studied. The aim of this study was to evaluate the effect of housing system, with the animals grouped together in a paddock or kept in individual boxes, on sexual behaviour, cortisol and testosterone concentration and seminal characteristics of adult male donkeys. The study included four Amiata donkey jacks (stallions) from which ejaculates, saliva and blood were collected during two distinct 3 weeks periods, one in the group and one in the box housing system...
August 14, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28750061/endocrine-and-aggressive-responses-to-competition-are-moderated-by-contest-outcome-gender-individual-versus-team-competition-and-implicit-motives
#20
Jon K Oxford, Johanna M Tiedtke, Anna Ossmann, Dominik Özbe, Oliver C Schultheiss
This study examined hormonal responses to competition in relation to gender, social context, and implicit motives. Participants (N = 326) were randomly assigned to win or lose in a 10-round, virtual face-to-face competition, in same-sex individual- and team-competition contexts. Saliva samples, taken before and twice after the competition, were assayed for testosterone (T), estradiol (E), progesterone (P), and cortisol (C). Implicit needs for power (nPower) and affiliation (nAffiliation) were assessed with a picture-story exercise before the competition...
2017: PloS One
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