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https://www.readbyqxmd.com/read/29624522/low-energy-availability-plasma-lipids-and-hormonal-profiles-of-recreational-athletes
#1
Katherine Black, Joanne Slater, Rachel C Brown, Rebecca Cooke
Black, K, Slater, J, Brown, RC, and Cooke, R. Low energy availability, plasma lipids, and hormonal profiles of recreational athletes. J Strength Cond Res XX(X): 000-000, 2018-It has been postulated that low energy availability (LEA) impacts bone health, hormonal concentrations, and cardiovascular function. This study describes the lipid levels, hormonal profiles, and nutrient intakes of recreationally active adults at risk of LEA compared with those not at risk. Thirty-eight women who meet or exceed the New Zealand guidelines for physical activity participated...
April 5, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29559922/correlation-between-resting-testosterone-cortisol-ratio-and-sound-induced-vasoconstriction-at-fingertip-in-men
#2
Yuuki Ooishi
A sound-induced sympathetic tone has been used as an index for orienting responses to auditory stimuli. The resting testosterone/cortisol ratio is a biomarker of social aggression that drives an approaching behavior in response to environmental stimuli, and a higher testosterone level and a lower cortisol level can facilitate the sympathetic response to environmental stimuli. Therefore, it is possible that the testosterone/cortisol ratio is correlated with the sound-induced sympathetic tone. The current study investigated the relationship between the resting testosterone/cortisol ratio and vasoconstriction induced by listening to sound stimuli...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29558827/choosing-fighting-competitors-among-men-testosterone-personality-and-motivations
#3
Javier I Borráz-León, Ana Lilia Cerda-Molina, Markus J Rantala, Lilian Mayagoitia-Novales
Higher testosterone levels have been positively related to a variety of social behaviors and personality traits associated with intrasexual competition. The aim of this study was to evaluate the role of testosterone levels and personality traits such as aggressiveness, competitiveness, and self-esteem on the task of choosing a fighting competitor (a rival) with or without a motivation to fight. In Study 1, a group of 119 men participated in a task for choosing a rival through pictures of men with high-dominant masculinity versus low-dominant masculinity...
January 2018: Evolutionary Psychology: An International Journal of Evolutionary Approaches to Psychology and Behavior
https://www.readbyqxmd.com/read/29522931/salivary-cortisol-and-cortisone-responses-to-short-term-psychological-stress-challenge-in-late-adolescent-and-young-women-with-different-hyperandrogenic-states
#4
Marco Mezzullo, Flaminia Fanelli, Guido Di Dalmazi, Alessia Fazzini, Daniela Ibarra-Gasparini, Marianna Mastroroberto, Jenny Guidi, Antonio Maria Morselli-Labate, Renato Pasquali, Uberto Pagotto, Alessandra Gambineri
Hyperandrogenic disorders have been associated with psychological distress, reduced quality of life, anxiety and depression. The hypothalamic-pituitary-adrenal (HPA) axis plays a pivotal role in the adaptive response to stressor events. Salivary cortisol (SalF) and cortisone (SalE) testing have been proven to be useful in the evaluation of HPA-axis activity. This study investigated whether SalF and SalE responses to two putative stressor levels differed between the hyperandrogenic states in late adolescent and young women, thus measuring the HPA-axis adaptive response to acute stress events...
February 24, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29505951/linking-testosterone-and-antisocial-behavior-in-at-risk-transitional-aged-youth-contextual-effects-of-parentification
#5
Frances R Chen, Jacinda K Dariotis, Douglas A Granger
Parentification refers to parents bestowing adult-like roles on children within families, and studies have linked parentification to individual differences in risk and resilience. The depth of our understanding of the pathways that translate parentification into risk for negative developmental outcomes remains shallow. This study examined whether parentification has a contextual effect moderating the expression of links between testosterone and antisocial behavior. Eighty-three participants (M age = 21...
February 23, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29472732/is-the-technical-performance-of-young-soccer-players-influenced-by-hormonal-status-sexual-maturity-anthropometric-profile-and-physical-performance
#6
Alexandre Moreira, Marcelo Massa, Carlos R Thiengo, Rafael Alan Rodrigues Lopes, Marcelo R Lima, Roel Vaeyens, Wesley P Barbosa, Marcelo S Aoki
The aim of this study was to examine the influence of hormonal status, anthropometric profile, sexual maturity level, and physical performance on the technical abilities of 40 young male soccer players during small-sided games (SSGs). Anthropometric profiling, saliva sampling, sexual maturity assessment (Tanner scale), and physical performance tests (Yo-Yo and vertical jumps) were conducted two weeks prior to the SSGs. Salivary testosterone was determined by the enzyme-linked immunosorbent assay method. Technical performance was determined by the frequency of actions during SSGs...
December 2017: Biology of Sport
https://www.readbyqxmd.com/read/29468906/quantification-of-10-steroid-hormones-in-human-saliva-from-chinese-adult-volunteers
#7
Jian Liu, Xuemei Qiu, Daoming Wang, Yantao Li, Yang Zong, Yichen Liu, Yue Zhang, Ping Yang, Yong Zuo, Huanming Yang, Jian Wang, Yutao Du, Jin Zi
Objective This study was performed to investigate the effects of age and sex on 10 salivary steroid hormones and analyze the correlations between salivary and plasma hormones. Methods The concentrations of 10 salivary steroid hormones in 1090 Chinese adult volunteers were examined using liquid chromatography-tandem mass spectrometry, and a related investigation was performed on the concentrations of salivary hormones in this population. Results The concentrations of androstenedione (A4), 17α-hydroxyprogesterone (17-OHP), aldosterone (ALD), cortisone (COR), corticosterone (CORT), cortisol (F), progesterone (P), and testosterone were significantly different between men and women (Student's t-test)...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29458935/everybody-was-kung-fu-fighting-the-beneficial-effects-of-tai-chi-qigong-and-self-defense-kung-fu-training-on-psychological-and-endocrine-health-in-middle-aged-and-older-men
#8
A Walther, T J Lacker, U Ehlert
BACKGROUND: Higher age is associated to a variety of physical and mental disorders. Age-related changes in steroid secretion have been suggested to be an underlying mechanism leading to frailty, depression, and sexual dysfunction. However, Tai chi qigong and similar forms of exercise have been shown to improve a great variety of health-related parameters in older individuals. METHODS: We examined 56 self-reporting healthy men actively practicing Tai chi qigong and/or self-defense Kung-fu and 55 age-matched self-reporting healthy controls...
February 2018: Complementary Therapies in Medicine
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
#9
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
#10
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
#11
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
#12
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...
February 2018: Hormones and Behavior
https://www.readbyqxmd.com/read/29197795/reproductive-steroids-and-adhd-symptoms-across-the-menstrual-cycle
#13
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...
February 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29195161/prenatal-and-pubertal-testosterone-affect-brain-lateralization
#14
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...
February 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29175736/brain-structural-connectivity-during-adrenarche-associations-between-hormone-levels-and-white-matter-microstructure
#15
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...
February 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29171482/-sleep-quality-and-hormone-levels-in-the-morning-and-evening-hours-under-chemical-pollution
#16
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
#17
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 2 waves. PARTICIPANTS: The sample included 902 adolescent twins, 49% female, aged 13-20 years (M = 15...
February 2018: 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
#18
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...
February 2018: 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
#19
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...
January 2018: 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
#20
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
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