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Menstrual cycle AND Exercise

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https://www.readbyqxmd.com/read/29535576/skeletal-muscle-estrogen-receptor-activation-in-response-to-eccentric-exercise-up-regulates-myogenic-related-gene-expression-independent-of-differing-serum-estradiol-levels-occurring-during-the-human-menstrual-cycle
#1
Mackenzie Haines, Sarah K McKinley-Barnard, Thomas L Andre, Josh J Gann, Paul S Hwang, Darryn S Willoughby
This study sought to determine if the differences in serum estradiol we have previously observed to occur during the mid-follicular (MF) and mid-luteal (ML) phases of the female menstrual cycle could be attributed to estrogen-induced receptor activation and subsequent effects on myogenic-related genes which may otherwise impact muscle regeneration in response to eccentric exercise. Twenty-two physically-active females (20.9 ± 1.4 years, 63.5 ± 9.0 kg, 1.65 ± 0.08 m) underwent an eccentric exercise bout of the knee extensors during the MF and ML phases of their 28-day menstrual cycle...
March 2018: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29517358/functional-hypothalamic-amenorrhea-and-its-psychological-correlates-a-controlled-comparison
#2
Ivana Pentz, Sandra Nakić Radoš
OBJECTIVE: The goal of the study was to examine differences between adolescents and young women with functional hypothalamic amenorrhea (FHA) and control groups in personality traits, eating attitudes and behaviours, and perception of parental behaviour. BACKGROUND: The FHA is stress-induced anovulation, both related to metabolic challenges, such as excessive exercise and malnutrition, and psychogenic challenges, such as perfectionism and poor coping strategies...
April 2017: Journal of Reproductive and Infant Psychology
https://www.readbyqxmd.com/read/29504728/the-role-of-lifestyle-changes-in-the-treatment-of-polycystic-ovary-syndrome
#3
Magdalena Smyka, Barbara Grzechocinska, Miroslaw Wielgos
Polycystic ovary syndrome is one of the most common endocrinopathy of the reproductive age. Heterogenity of its clinical symptoms is related to the presence of a number of phenotypes of this disfunction, hence the necessity for individualized treatment is needed. A change of a lifestyle, well-balanced diet and physical activity are the most effective medical way contributing to the improvement of carbohydrate metabolism parameters and weight reduction which reactivates regular ovulation and facilitates getting pregnant...
February 6, 2018: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/29455431/menstrual-phase-and-the-vascular-response-to-acute-resistance-exercise
#4
Jacqueline A Augustine, Kayla N Nunemacher, Kevin S Heffernan
INTRODUCTION: Aerobic exercise has a favorable effect on systemic vascular function, reducing both central (large elastic artery) and peripheral (smaller muscular artery) stiffness. The effects of resistance exercise (RE) on arterial stiffness are more complex. Acute RE increases central artery stiffness while decreasing peripheral stiffness. To date, the majority of studies have been performed in predominantly male participants. PURPOSE: To examine the effect of acute RE on central and peripheral arterial stiffnesses in women, a secondary purpose was to explore the influence of cyclic changes in estrogen status across the menstrual cycle on the arterial response to acute RE...
February 17, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29425972/a-longitudinal-analysis-of-salivary-testosterone-concentrations-and-competitiveness-in-elite-and-non-elite-women-athletes
#5
Blair T Crewther, Christian J Cook
BACKGROUND: There is evidence linking women's T to competitive behaviours in sport and exercise. To advance this work, we examined the longitudinal relationships between salivary testosterone (sal-T) and competitiveness in athletic women who differ in training status. METHODS: Elite (n = 9) and non-elite (n = 21) women athletes were monitored on days 6-8 (follicular phase), 13-15 (ovulatory phase) and 20-22 (Luteal phase) of a menstrual cycle with two repeats...
February 6, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29417063/the-effect-of-aerobic-exercise-on-primary-dysmenorrhea-a-clinical-trial-study
#6
Zahra Mohebbi Dehnavi, Farzaneh Jafarnejad, Zahra Kamali
INTRODUCTION: Primary dysmenorrhea without pelvic pathology is one of the most common complaints in women's medicine. Primary dysmenorrhea can affect the quality of life of women. Aerobic exercise is one of the ways to reduce the severity of primary dysmenorrhea. The present study aimed to determine the effect of 8 weeks of aerobic exercise on the severity of primary dysmenorrhea. METHODS: This is a clinical trial study performed on 70 students with primary dysmenorrhea in dormitories of Mashhad University of Medical Sciences in 2015...
2018: Journal of Education and Health Promotion
https://www.readbyqxmd.com/read/29380957/pilot-study-an-acute-bout-of-high-intensity-interval-exercise-increases-12-5-h-gh-secretion
#7
Sarah E Deemer, Todd J Castleberry, Chris Irvine, Daniel E Newmire, Michael Oldham, George A King, Vic Ben-Ezra, Brian A Irving, Kyle D Biggerstaff
The purpose of this study was to test the hypothesis that high-intensity interval exercise (HIE) significantly increases growth hormone (GH) secretion to a greater extent than moderate-intensity continuous exercise (MOD) in young women. Five young, sedentary women (mean ± SD; age: 22.6±1.3 years; BMI: 27.4±3.1 kg/m2 ) were tested during the early follicular phase of their menstrual cycle on three occasions. For each visit, participants reported to the laboratory at 1700 h, exercised from 1730-1800 h, and remained in the laboratory until 0700 h the following morning...
January 2018: Physiological Reports
https://www.readbyqxmd.com/read/29345213/matcha-green-tea-drinks-enhance-fat-oxidation-during-brisk-walking-in-females
#8
Mark Elisabeth Theodorus Willems, Mehmet Akif Şahin, Matthew David Cook
Intake of the catechin epigallocatechin gallate and caffeine has been shown to enhance exercise-induced fat oxidation. Matcha green tea powder contains catechins and caffeine and is consumed as a drink. We examined the effect of Matcha green tea drinks on metabolic, physiological and perceived intensity responses during brisk walking. Thirteen females (age: 27±8 yr, body mass: 65±7 kg, height: 166±6 cm) volunteered. Resting metabolic equivalent (1-MET) was measured using Douglas bags (1-MET: 3.4±0.3 ml·kg-1 ·min-1 )...
January 18, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29280410/iron-balance-and-iron-supplementation-for-the-female-athlete-a-practical-approach
#9
Charles R Pedlar, Carlo Brugnara, Georgie Bruinvels, Richard Burden
Maintaining a positive iron balance is essential for female athletes to avoid the effects of iron deficiency and anaemia and to maintain or improve performance. A major function of iron is in the production of the oxygen and carbon dioxide carrying molecule, haemoglobin, via erythropoiesis. Iron balance is under the control of a number of factors including the peptide hormone hepcidin, dietary iron intake and absorption, environmental stressors (e.g. altitude), exercise, menstrual blood loss and genetics. Menstruating females, particularly those with heavy menstrual bleeding are at an elevated risk of iron deficiency...
March 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29273090/exercise-and-reproductive-function-in-polycystic-ovary-syndrome-protocol-of-a-systematic-review
#10
Isis Kelly Dos Santos, Romilson de Lima Nunes, Gustavo Mafaldo Soares, Tecia Maria de Oliveira Maranhão, Paulo Moreira Silva Dantas
BACKGROUND: Although many post-participation outcomes in different types of physical training (e.g., aerobic and strength) have been previously investigated for the treatment of polycystic ovary syndrome, there is no recent systematic review of the relationship between various types of intervention and the reproductive function of women with PCOS. The current paper describes a systematic review protocol on the benefits of physical exercise and dietary or drug interventions on endocrinological outcomes in women with PCOS...
December 22, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/29207251/oral-contraceptives-modulate-the-muscle-metaboreflex-in-healthy-young-women
#11
Hanna R Parmar, Jasmin Sears, Yannick Molgat-Seon, Cara L McCulloch, Laura A McCracken, Courtney V Brown, A William Sheel, Paolo B Dominelli
There are known sex differences in blood pressure regulation. The differences are related to ovarian hormones that influence β-adrenergic receptors and the transduction of muscle sympathetic nerve activity. Oral contraceptives (OC) modulate the ovarian hormonal profile in women and therefore may alter the cardiovascular response. We questioned if OC would alter the absolute pressor response to static exercise and influence the day-to-day variability of the response. Healthy men (n = 11) and women (n = 19) completed a familiarization day and 2 experimental testing days...
December 5, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29202311/quantitative-sensory-response-of-the-scm-muscle-on-sustained-low-level-activation-simulating-co-contractions-during-bruxing
#12
Lydia Eberhard, Sophia Terebesi, Nikolaos Nikitas Giannakopoulos, Daniel Hellmann, Hans-Jürgen Schindler, Marc Schmitter, Doreen Pfau
OBJECTIVE: Bruxism is discussed as an etiological factor in the pathogenesis of orofacial and cervical pain. As the sternocleidomastoid muscle (SCM) is co-activated during clenching, our aim was to investigate, whether the muscle loading leads to peripheral or central sensitizations. DESIGN: In twenty-one healthy female volunteers, somatosensory profiles of the SCM were recorded according to the test battery of the German Research Network on Neuropathic Pain (DFNS) prior to and after an isometric muscle exercise...
February 2018: Archives of Oral Biology
https://www.readbyqxmd.com/read/29200635/the-effects-of-the-menstrual-cycle-on-the-static-balance-in-healthy-young-women
#13
Byung Joon Lee, Ki Hun Cho, Wan Hee Lee
[Purpose] The purpose of this study was to investigate the effects of the menstrual cycle on the static balance of healthy young women. [Subjects and Methods] Eighteen healthy young subjects (mean age 19.1 years; weight 57.5 kg; height 159.9 cm) participated in this study. The Good Balance system was used to measure the postural sway speed and velocity moment of subjects in the static standing posture. Subjects were measured for static balance between 1 and 3 days after menstruation and 13 days after menstruation...
November 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29197944/experience-of-symptoms-and-disease-impact-in-patients-with-adenomyosis
#14
Linda M Nelsen, William R Lenderking, Robin Pokrzywinski, Zaneta Balantac, Libby Black, Shibani Pokras, Mary Beth Enslin, Melisa Cooper, Andrea S Lukes
BACKGROUND: Adenomyosis is a poorly understood, benign disease of the uterus. OBJECTIVE: In this study, patient interviews were conducted to characterize the symptoms and impact of adenomyosis. METHODS: This was a cross-sectional study in which women with adenomyosis were recruited from five US clinics and a health-related social network forum. Participants (aged 18-55 years) were pre-menopausal with a history of regular menstrual cycles...
December 2, 2017: Patient
https://www.readbyqxmd.com/read/29083061/the-impact-of-menstrual-phase-on-brachial-artery-flow-mediated-dilatation-during-handgrip-exercise-in-healthy-premenopausal-women
#15
Katrina A D'Urzo, Trevor J King, Jennifer S Williams, Morgan D Silvester, Kyra E Pyke
What is the central question of this study? The aim of this study was to determine the influence of menstrual phase on flow-mediated dilatation in response to sustained, exercise-induced increases in shear stress. What is the main finding and its importance? We showed, for the first time, that in healthy, premenopausal women the flow-mediated dilatation stimulated by exercise-induced increases in shear stress did not fluctuate across two phases of the menstrual cycle, despite significant fluctuations in oestrogen...
February 1, 2018: Experimental Physiology
https://www.readbyqxmd.com/read/29023359/menstrual-disruption-with-exercise-is-not-linked-to-an-energy-availability-threshold
#16
Jay L Lieberman, Mary Jane De Souza, David A Wagstaff, Nancy I Williams
INTRODUCTION: Chronic reductions in energy availability (EA) suppress reproductive function. A particular calculation of EA quantifies the dietary energy remaining after exercise for all physiological functions. Reductions in LH pulse frequency have been demonstrated when EA using this calculation is < 30 kcal/ kg ffm·d. PURPOSE: We determined whether menstrual disturbances (MD) are induced when EA is < 30 kcal/ kg ffm·d. METHODS: Thirty-five sedentary, ovulatory women 18-24 yr (weight= 59...
October 10, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28977777/omega-3-polyunsaturated-fatty-acid-docosahexaenoic-acid-and-its-role-in-exhaustive-exercise-induced-changes-in-female-rat-ovulatory-cycle
#17
Abeer F Mostafa, Shereen M Samir, Reham M Nagib
INTRODUCTION: Exhaustive exercises can cause delayed menarche or menstrual cycle irregularities in female. Omega-3 polyunsaturated fatty acids (ω-3 PUFAs) are incorporated into a wide range of benefits in many physiological systems. AIM OF WORK: aimed to assess the role of ω-3 PUFA docosahexaenoic acid (DHA) on the deleterious effects of exhaustive exercise on female reproductive system in rats. MATERIALS AND METHODS: virgin female rats were randomly divided into four groups (12 rats in each): Control group (C), Omega 3 (ω-3) group treated with DHA, exhaustive exercise group (Ex), and exhaustive exercised rats treated with DHA...
October 4, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28970163/establishment-of-a-chronic-activity-based-anorexia-rat-model
#18
Linda Frintrop, Stefanie Trinh, Johanna Liesbrock, Lisa Paulukat, Martien J Kas, Rene Tolba, Kerstin Konrad, Beate Herpertz-Dahlmann, Cordian Beyer, Jochen Seitz
BACKGROUND: Anorexia nervosa (AN) is often a chronic eating disorder characterised by body image disturbance and low body weight often associated with starvation-induced amenorrhoea and excessive exercise. Activity-based anorexia (ABA) is an animal model representing many somatic aspects of this psychiatric illness. We systematically manipulated the extent and length of starvation and animal age to find the optimal parameters to study chronic starvation. NEW METHODS: Wistar rats had 24h/day running wheel access and received 40% of their baseline food intake until a 20% or 25% weight reduction was reached (acute starvation)...
January 1, 2018: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28930874/the-effectiveness-of-fish-oil-supplementation-in-attenuating-exercise-induced-muscle-damage-in-females-during-mid-follicular-and-mid-luteal-menstrual-phases
#19
Sarah K McKinley-Barnard, Thomas L Andre, Josh J Gann, Paul S Hwang, Darryn S Willoughby
The purpose of this study was to determine if the differences in estrogen levels during the female menstrual cycle and fish oil supplementation would attenuate eccentric exercise-induced muscle damage (EIMD) and delayed onset muscle soreness (DOMS). In a double-blind fashion, 22 physically-active females (20.9 ± 1.4 years, 63.5 ± 9.0 kg, 165.2 ± 7.5 cm) were randomly assigned to ingest either 6 grams of fish oil (n = 11) or placebo (n = 11) daily for 21 days. Participants underwent an eccentric exercise bout of the knee extensors on two occasions during the mid-follicular (MF) and mid-luteal (ML) phases of the 28-day menstrual cycle...
September 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28906053/the-effects-of-menstrual-cycle-phase-on-the-incidence-of-plateau-at-v%C3%AB-o2max-and-associated-cardiorespiratory-dynamics
#20
Dan Gordon, Adrian Scruton, Richard Barnes, James Baker, Luciano Prado, Viviane Merzbach
The purpose of this study was to examine the effect of menstrual cycle phase on maximal oxygen uptake (V˙O2max) and associated cardiodynamic responses. A total of 16 active females volunteered of which n = 10 formed the non-oral contraceptive pill group (n-OCP), displaying a regular menstrual cycle of 28·4 ± 2·2 days (age 20·6 ± 1·6 years, height 169·9 ± 6·4 cm, mass 68·7 ± 7·9 kg) and n = 6 formed the oral contraceptive pill group (OCP) (monophasic pill) (age 21·7 years ± 2·16, height 168·1 cm ± 6·8 cm, mass 61·6 ± 6·8 kg)...
September 14, 2017: Clinical Physiology and Functional Imaging
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