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Ovarian hormones AND exercise

D Đuričić, S Vince, H Valpotić, I Žura Žaja, R Turk, M Lojkić, I Getz, V Berta, M Samardžija
The aim of this study was to determine onset of puberty in Cameroon Dwarf goats (CDGs) kept as pets in northwestern Croatia by determining progesterone (PGS) and insulin-like growth factor-I (IGF-I) levels in the blood by RIA methods. The first cyclic ovarian activity was estimated according to hormone profiles as determined in CDG in a moderate climate environment. Sixteen female CDG kids were kept in stables with access to pasture which provided space for exercise. The goat kids born in winter (December-January-February), spring (March-April-May), summer (June-July-August) and autumn (September-October-November) were assigned into four groups according to the season of the year of birth (n = 4 in each group)...
December 14, 2016: Reproduction in Domestic Animals, Zuchthygiene
Seyedeh Nazanin Seyed Saadat, Fahimeh Mohammadghasemi, Hannan Ebrahimi, Hanieh Rafati Sajedi, Gelayol Chatrnour
BACKGROUND: Physical exercise is known to be a stressor stimulus that leads to reproductive disruption. OBJECTIVE: The aim of this study was to evaluate the effect of forced swimming on the uterus and ovaries in mice. MATERIALS AND METHODS: Adult mice (N=24) were divided into the following three groups: A, control; B, swimming in water (10(o)C); and C, swimming in water (23(o)C). Swimmers swam for 5 min daily for 5 consecutive days/ wk during 2 wks...
October 2016: International Journal of Reproductive Biomedicine (Yazd, Iran)
Audrey J R Lim, Zhongwei Huang, Seok Eng Chua, Michael S Kramer, Eu-Leong Yong
CONTEXT: Few studies have examined the associations between sleep duration, shiftwork, and exercise to the infrequent menstruation, hyperandrogenism, and ovarian morphological changes observed in women with polycystic ovarian syndrome (PCOS). OBJECTIVE: To examine whether lifestyle factors, including short sleep duration, insufficient exercise, and shiftwork, alone or in combination, are associated with the reproductive and metabolic abnormalities typical of PCOS in a healthy population...
2016: PloS One
Giovanna Muscogiuri, Stefano Palomba, Antonio Simone Laganà, Francesco Orio
BACKGROUND: Polycystic ovary syndrome (PCOS) is a complex syndrome characterized by reproductive and metabolic implications. Lifestyle changes, such as diet and exercise, are considered first-line treatment for women affected by PCOS. Pharmacologic treatments target the hormonal and metabolic dysregulations associated to the disease such as insulin resistance, anovulation, hirsutism and menstrual irregularities. OBJECTIVE: To focus on the role of inositol isoforms, as well as Mediterranean and ketogenic diets, as possible therapeutic strategies in PCOS women...
2016: Current Pharmaceutical Design
Alexis B Jones, Rebecca Gupton, Kathleen S Curtis
The beneficial effects of physical exercise to reduce anxiety and depression and to alleviate stress are increasingly supported in research studies. The role of ovarian hormones in interactions between exercise and anxiety/stress has important implications for women's health, given that women are at increased risk of developing anxiety-related disorders, particularly during and after the menopausal transition. In these experiments, we tested the hypothesis that estrogen enhances the positive impact of exercise on stress responses by investigating the combined effects of exercise and estrogen on anxiety-like behaviors and stress hormone levels in female rats after an acute stressor...
September 15, 2016: Behavioural Brain Research
Chi Eung Danforn Lim, Rachel W C Ng, Ke Xu, Nga Chong Lisa Cheng, Charlie C L Xue, Jian Ping Liu, Nini Chen
BACKGROUND: Polycystic ovarian syndrome (PCOS) is characterised by the clinical signs of oligo-amenorrhoea, infertility and hirsutism. Conventional treatment of PCOS includes a range of oral pharmacological agents, lifestyle changes and surgical modalities. Beta-endorphin presents in the follicular fluid of both normal and polycystic ovaries. It was demonstrated that the beta-endorphin levels in ovarian follicular fluid of otherwise healthy women who were undergoing ovulation were much higher than the levels measured in plasma...
May 3, 2016: Cochrane Database of Systematic Reviews
Jacqueline Freire Machi, Danielle da Silva Dias, Sarah Cristina Freitas, Oscar Albuquerque de Moraes, Maikon Barbosa da Silva, Paula Lázara Cruz, Cristiano Mostarda, Vera M C Salemi, Mariana Morris, Kátia De Angelis, Maria-Cláudia Irigoyen
OBJECTIVE: The aim of this study was to evaluate the effects of aging on metabolic, cardiovascular, autonomic, inflammatory, and oxidative stress parameters after ovarian hormone deprivation (OVX). METHODS: Female Wistar rats (3 or 22 months old) were divided into: young controls, young ovariectomized, old controls, and old ovariectomized (bilateral ovaries removal). After a 9-week follow-up, physical capacity, metabolic parameters, and morphometric and cardiac functions were assessed...
2016: Clinical Interventions in Aging
Heather C M Allaway, Emily A Southmayd, Mary Jane De Souza
An energy deficiency is the result of inadequate energy intake relative to high energy expenditure. Often observed with the development of an energy deficiency is a high drive for thinness, dietary restraint, and weight and shape concerns in association with eating behaviors. At a basic physiologic level, a chronic energy deficiency promotes compensatory mechanisms to conserve fuel for vital physiologic function. Alterations have been documented in resting energy expenditure (REE) and metabolic hormones. Observed metabolic alterations include nutritionally acquired growth hormone resistance and reduced insulin-like growth factor-1 (IGF-1) concentrations; hypercortisolemia; increased ghrelin, peptide YY, and adiponectin; and decreased leptin, triiodothyronine, and kisspeptin...
February 2016: Hormone Molecular Biology and Clinical Investigation
Wei Feng, Yan-Yan Jia, Dong-Ya Zhang, Hui-Rong Shi
In this study, we assessed the efficacy and safe usage of the oral contraceptive, Diane-35, in the treatment of polycystic ovary syndrome (PCOS) when combined with the drug metformin. Eighty-two patients with PCOS were randomly divided into two equal groups: Diane-35 treatment group and Diane-35 plus metformin group. Three treatment cycles were administered. Patients' biomedical data such as height, weight, waist circumference, hip circumference, body fat percentage, acne score, hirsutism score and serum hormone levels were selected, which were tested between the second and the fifth day of the menstrual cycle and follicle-stimulating hormone (FSH), luteinizing hormone (LH), testosterone (T), blood glucose, blood lipids and insulin levels(IR) were analyzed...
2016: Gynecological Endocrinology
Sukanya Phungphong, Anusak Kijtawornrat, Jonggonnee Wattanapermpool, Tepmanas Bupha-Intr
It is well accepted that regular exercise is a significant factor in the prevention of cardiac dysfunction; however, the cardioprotective mechanism is as yet not well defined. We have examined whether regular exercise can modulate the activity of cardiac mast cells (CMC) after deprivation of female sex hormones, as well as the density and percentage degranulation of mast cells, in ventricular tissue of ovariectomized (OVX) rats after an 11-week running program. A significant increase in CMC density with a greater percentage degranulation was induced after ovarian sex hormone deprivation...
March 2016: Journal of Physiological Sciences: JPS
Magdalena Weber-Rajek, Jan Mieszkowski, Bartłomiej Niespodziński, Katarzyna Ciechanowska
The report of the World Health Organization (WHO) of 2008 defines osteoporosis as a disease characterized by low bone mass and an increased risk of fracture. Postmenopausal osteoporosis is connected to the decrease in estrogens concentration as a result of malfunction of endocrine ovarian function. Low estrogens concentration causes increase in bone demineralization and results in osteoporosis. Physical activity, as a component of therapy of patients with osteoporosis, has been used for a long time now. One of the forms of safe physical activity is the vibration training...
March 2015: Przeglad Menopauzalny, Menopause Review
Elżbieta Sowińska-Przepiera, Elżbieta Andrysiak-Mamos, Grażyna Jarząbek-Bielecka, Aleksandra Walkowiak, Lilianna Osowicz-Korolonek, Małgorzata Syrenicz, Witold Kędzia, Anhelli Syrenicz
Functional hypothalamic amenorrhoea (FHA) is associated with functional inhibition of the hypothalamic-pituitary-ovarian axis. Causes of FHA can be classified into the three groups: 1) stress-related factors, 2) consequences of weight loss and/or underweight, and 3) consequences of physical exercise or practicing sports. Diagnosis of FHA should be based on a history of menstrual disorders. During physical examination, patients with FHA present with secondary and tertiary sex characteristics specific for the pubertal stage preceding development of the condition and with the signs of hypoestrogenism...
2015: Endokrynologia Polska
Masayuki Tanaka, Miho Kanazashi, Toshiyuki Maezawa, Hiroyo Kondo, Hidemi Fujino
Reduced ovarian hormone levels associated with menopause or ovariectomy (OVX) not only result in vascular dysfunction but also lead to structural abnormalities in capillaries. Therefore, the effect of OVX on the three-dimensional (3-D) architecture of capillary networks and the underlying molecular mechanisms were investigated in rat soleus muscle. Seven-week-old female Wistar rats were divided into the OVX and sham-treated (Sham) groups. The OVX group exhibited lower endurance exercise capacity compared to the sham group and resulted in decreased capillary diameter, number of anastomoses and capillary/anastomosis volume in soleus muscle, indicating 3-D structural abnormalities of capillary networks...
September 2015: Acta Histochemica
Ai Morita, Yasushi Ishigaki
Gender-difference is thought to be an important factor in the pathogenesis of glucose metabolism. Imbalances in sex hormones, such as increasing levels of progesterone or testosterone, are associated with systemic insulin resistance. After menopause, women are at an increased risk to develop visceral obesity due to the loss of endogenous ovarian hormone production. On the other hand, insulin resistance caused excess secretion of androgen, leading to menstrual disorder in obese young female. For the better management of glucose intolerance in pregnancy, the diagnostic criteria for gestational diabetes was revised in Japan...
April 2015: Nihon Rinsho. Japanese Journal of Clinical Medicine
G L Shimojo, R K Palma, J O Brito, I C Sanches, M C Irigoyen, K De Angelis
The aim of this study was to investigate the effects of resistance exercise training on hemodynamics and cardiac autonomic control in ovariectomized spontaneously hypertensive rats. Female rats were divided into 4 groups: sedentary control (SC), sedentary hypertensive (SH), sedentary hypertensive ovariectomized (SHO), and resistance-trained hypertensive ovariectomized (RTHO). Resistance exercise training was performed on a vertical ladder (5 days/week, 8 weeks) at 40-60% maximal load. Direct arterial pressure was recorded...
June 2015: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
Laura Moody, Joy Liang, Pique P Choi, Timothy H Moran, Nu-Chu Liang
Physical activity has beneficial effects on not only improving some disease conditions but also by preventing the development of multiple disorders. Experiments in this study examined the effects of wheel running on intakes of chow and palatable diet e.g. high fat (HF) or high sucrose (HS) diet in male and female Sprague-Dawley rats. Experiment 1 demonstrated that acute wheel running results in robust HF or HS diet avoidance in male rats. Although female rats with running wheel access initially showed complete avoidance of the two palatable diets, the avoidance of the HS diet was transient...
October 15, 2015: Physiology & Behavior
André L Teixeira, Plinio S Ramos, Lauro C Vianna, Djalma R Ricardo
The purpose of this study was to investigate the effects of the ovarian hormones and the use of oral contraceptive pills (OCP) on cardiac vagal withdrawal at the onset of dynamic exercise. Thirty physically active women aged 19-32 years were divided into two groups: OCP users (n = 17) and non-OCP users (n = 13). Participants were studied randomly at three different phases of the menstrual cycle: early follicular (day 3.6 ± 1.2; range 1-5), ovulatory (day 14.3 ± 0.8; range 13-16) and midluteal (day 21.3 ± 0...
2015: PloS One
Karen L Shea, Kathleen M Gavin, Edward L Melanson, Ellie Gibbons, Anne Stavros, Pamela Wolfe, John M Kittelson, Sheryl F Vondracek, Robert S Schwartz, Margaret E Wierman, Wendy M Kohrt
OBJECTIVE: Suppression of ovarian hormones in premenopausal women on gonadotropin-releasing hormone agonist (GnRH(AG)) therapy can cause fat mass (FM) gain and fat-free mass (FFM) loss. Whether this is specifically caused by a decline in serum estradiol (E2) is unknown. This study aims to evaluate the effects of GnRH(AG) with placebo (PL) or E2 add-back therapy on FM, FFM, and bone mineral density (BMD). Our exploratory aim was to evaluate the effects of resistance exercise training on body composition during the drug intervention...
October 2015: Menopause: the Journal of the North American Menopause Society
Jennifer L Reed, Mary Jane De Souza, Rebecca J Mallinson, Jennifer L Scheid, Nancy I Williams
BACKGROUND: Conditions of low energy availability (EA) (<30 kcal/kgLBM) have been associated with suppressed metabolic hormones and reductions in LH pulsatility in previously sedentary women during short-term manipulations of energy intake (EI) and exercise energy expenditure (EEE) in a controlled laboratory setting. The purpose of this study was to examine if EA, defined as EA = (EI-EEE)/kgLBM, is associated with disruptions in ovarian function in exercising women. METHODS: Menstrual status was confirmed with daily measures of urinary reproductive metabolites across 1-3 menstrual cycles or 28-day monitoring periods...
2015: Journal of the International Society of Sports Nutrition
Pratap Kumar, Shweta Arora
BACKGROUND: The effects of exercise, metformin, and orlistat on anthropometric parameters, lipid profile, endocrine parameters, and ovulation in polycystic ovarian syndrome (PCOS) women were compared. AIM: The aim was to study the efficacy of orlistat compared with metformin and exercise in PCOS. DESIGN: Randomized control trial. METHODS: A total of 90 eligible PCOS women were randomly assigned to receive either of the two drugs (orlistat or metformin) in combination with lifestyle interventions or as controls where they received lifestyle interventions alone...
October 2014: Journal of Human Reproductive Sciences
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