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Menstrual cycle AND Exercise

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https://www.readbyqxmd.com/read/27900769/influence-of-menstrual-phase-and-arid-vs-humid-heat-stress-on-autonomic-and-behavioural-thermoregulation-during-exercise-in-trained-but-unacclimated-women
#1
Tze-Huan Lei, Stephen R Stannard, Blake G Perry, Zachary J Schlader, James D Cotter, Toby Mündel
We studied thermoregulatory responses of ten well-trained (VO2 max, 57 (7) mL min(-1) kg(-1) ) eumenorrheic women exercising in dry and humid heat, across their menstrual cycle. They completed four trials, each of resting and cycling at fixed intensities (125 and 150 W), to assess autonomic regulation, then self-paced intensity (30-min work trial), to assess behavioural regulation. Trials were in early-follicular (EF) and mid-luteal (ML) phases in dry (DRY) and humid (HUM) heat matched for wet bulb globe temperature (WBGT, 27°C)...
November 29, 2016: Journal of Physiology
https://www.readbyqxmd.com/read/27898641/oral-contraceptive-use-dampens-physiological-adaptations-to-sprint-interval-training
#2
Mia A Schaumberg, David G Jenkins, Xanne A K Janse de Jonge, Lynne M Emmerton, Tina L Skinner
PURPOSE: Oral contraceptive (OC) use reduces peak aerobic capacity (V˙O2peak), however, whether it also influences adaptations to training has yet to be determined. This study aimed to examine the influence of OC use on peak performance [peak power output (PPO)] and physiological adaptations [V˙O2peak and peak cardiac output (Q˙peak)] following sprint interval training (SIT) in recreationally-active women. METHODS: Women taking an OC (n=25) or experiencing natural regular menstrual cycles (MC; n=16) completed an incremental exercise test to assess V˙O2peak, PPO, and Q˙peak before, immediately after, and four weeks following 12 sessions of SIT...
November 28, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27870902/sleep-duration-exercise-shift-work-and-polycystic-ovarian-syndrome-related-outcomes-in-a-healthy-population-a-cross-sectional-study
#3
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
https://www.readbyqxmd.com/read/27832807/sex-specific-variation-in-signaling-pathways-and-gene-expression-patterns-in-human-leukocytes-in-response-to-endotoxin-and-exercise
#4
Asghar Abbasi, Rodolfo de Paula Vieira, Felix Bischof, Michael Walter, Masoud Movassaghi, Nicole C Berchtold, Andreas M Niess, Carl W Cotman, Hinnak Northoff
BACKGROUND: While exercise effects on the immune system have received increasing attention in recent years, it remains unclear to what extent gender and fluctuations in sex hormones during menstrual cycle influence immunological responses to exercise. METHODS: We investigated mRNA changes induced through exhaustive exercise (half-marathon; pre-exercise and post-exercise [30 min, 3 h, 24 h] on whole blood cultures ± lipopolysaccharide [LPS] [1 h]) with a specific focus on sex differences (men vs women in luteal phase) as an extension of our previous study...
November 10, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27739188/dopamine-noradrenaline-reuptake-inhibition-in-women-improves-endurance-exercise-performance-in-the-heat
#5
P Cordery, N Peirce, R J Maughan, P Watson
Catecholamine reuptake inhibition improves the performance of male volunteers exercising in warm conditions, but sex differences in thermoregulation, circulating hormones, and central neurotransmission may alter this response. With local ethics committee approval, nine physically active women (mean ± SD age 21 ± 2 years; height 1.68 ± 0.08 m; body mass 64.1 ± 6.0 kg; VO2peak 51 ± 7 mL/kg/min) were recruited to examine the effect of pre-exercise administration of Bupropion (BUP; 4 × 150 mg) on prolonged exercise performance in a warm environment...
October 13, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/27730736/let-s-talk-about-sex-where-are-the-young-females-in-blood-flow-restriction-research
#6
Brittany R Counts, Lindy M Rossow, Kevin T Mattocks, J Grant Mouser, Matthew B Jessee, Samuel L Buckner, Scott J Dankel, Jeremy P Loenneke
Low-load resistance exercise with the blood flow restriction (BFR) has been shown to increase muscle size similar to that of traditional high-load resistance training. Throughout the BFR literature, there is a vast difference between the quantity of young females included in the literature compared to young males, older males and older females. Therefore, the purpose of this minireview is to discuss the underrepresentation of young females in the BFR literature and review the potential physiologic reasons as to why they may have been excluded...
October 11, 2016: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/27621181/circulating-follistatin-displays-a-day-night-rhythm-and-is-associated-with-muscle-mass-and-circulating-leptin-levels-in-healthy-young-humans
#7
Athanasios D Anastasilakis, Stergios A Polyzos, Elpida C Skouvaklidou, Georgios Kynigopoulos, Zacharias G Saridakis, Aggeliki Apostolou, Georgios A Triantafyllou, Thomai Karagiozoglou-Lampoudi, Christos S Mantzoros
PURPOSE: Follistatin may affect lean and fat mass and be implicated in metabolic diseases. We aimed to elucidate physiological predictors of circulating follistatin variation in healthy young humans. PROCEDURES: This was an observational, cross-sectional study with two additional prospective observational arms (circadian, seasonal sub-studies) and one prospective interventional arm (mixed meal sub-study). Healthy, young individuals of both sexes (n=122) were subjected to anthropometric and body composition measurements and their eating and exercise behavior profiles were assessed by validated questionnaires...
October 2016: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/27584558/assessment-of-the-menstrual-cycle-eating-disorders-and-self-esteem-of-polish-adolescents
#8
Agnieszka Drosdzol-Cop, Monika Bąk-Sosnowska, Dominika Sajdak, Agnieszka Białka, Agnieszka Kobiołka, Grzegorz Franik, Violetta Skrzypulec-Plinta
INTRODUCTION: Eating disorders are an important factor in menstrual cycle disorders in girls. Moreover, low self-esteem among adolescent girls may be a risk factor for eating disorders. The aim of the study was to assess the menstrual cycle, eating habits and self-esteem of Polish adolescents. METHODS: The study was conducted from January 2014 to March 2015 and included 623 girls, aged 15-19, from randomly selected junior high schools in Silesia, Poland, in which their menstrual cycle, risk of eating disorders and self-esteem were evaluated...
September 1, 2016: Journal of Psychosomatic Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/27582584/premenopausal-trabecular-bone-loss-is-associated-with-a-family-history-of-fragility-fracture
#9
J C Prior, C L Hitchcock, Y M Vigna, V Seifert-Klauss
INTRODUCTION: Although a fragility fracture family history (FFFH+) has repeatedly been shown to be associated with lower bone mineral density (BMD), its relationship to human BMD change is unclear. Animal research, however, documented that different purebred strains within rodent species have wide ranges in rates of bone acquisition during growth as well as in change post-ovariectomy. Our objective was to compare the rate of premenopausal spinal trabecular BMD change between women with and without a general family history of fragility fracture...
August 2016: Geburtshilfe und Frauenheilkunde
https://www.readbyqxmd.com/read/27506589/sympathetic-neural-and-cardiovascular-responses-during-static-handgrip-exercise-in-women-with-a-history-of-hypertensive-pregnancy
#10
Abigail S L Stickford, Yoshiyuki Okada, Stuart A Best, Rosemary S Parker, Benjamin D Levine, Qi Fu
PURPOSE: Women with a history of hypertensive pregnancy are at greater risk for future cardiovascular events; however, the mechanisms for this increased risk are unknown. Evidence suggests that an exercise stimulus unmasks latent hypertensive tendencies, identifying individuals at the greatest risk for developing cardiovascular disease. The current study examined the hypothesis that women with a hypertensive pregnancy history exhibit an augmented exercise pressor response. METHODS: Normotensive women with a history of healthy pregnancy (CON; n = 9) and hypertensive pregnancy (HP+; n = 12) were studied during the mid-luteal phase of the menstrual cycle...
August 9, 2016: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/27465478/the-effect-of-the-menstrual-cycle-and-water-consumption-on-physiological-responses-during-prolonged-exercise-at-moderate-intensity-in-hot-conditions
#11
Hideki Hashimoto, Toshimichi Ishijima, Katsuhiko Suzuki, Mitsuru Higuchi
BACKGROUND: Reproductive hormones are likely to be involved in thermoregulation through body fluid dynamics. In the present study, we aimed to investigate the effect of the menstrual cycle and water consumption on physiological responses to prolonged exercise at moderate intensity in hot conditions. METHODS: Eight healthy young women with regular menstrual cycles performed cycling exercise for 90 minutes at 50% V̇O2peak intensity during the low progesterone (LP) level phase and high progesterone (HP) level phase, with or without water consumption, under hot conditions (30°C, 50% relative humidity)...
September 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27387290/heterogeneous-circulating-angiogenic-cell-responses-to-acute-maximal-exercise
#12
Daniel D Shill, Meagan P Marshburn, Hannah K Hempel, Kasey A Lansford, Nathan T Jenkins
PURPOSE: Circulating angiogenic cells (CACs) comprise multiple subpopulations of exercise-inducible peripheral blood mononuclear cells (PBMCs) that promote angiogenesis and maintain endothelial integrity. We examined the effect of acute maximal exercise on CD31, CD62E, CD14/CD31, CD34/VEGFR2, CD3/CD31, and CD3 PBMCs in young, healthy adults. METHODS: Blood samples were collected before and immediately after a graded treadmill exercise test for CAC analysis via flow cytometry...
July 6, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27382033/low-resting-metabolic-rate-in-exercise-associated-amenorrhea-is-not-due-to-a-reduced-proportion-of-highly-active-metabolic-tissue-compartments
#13
Karsten Koehler, Nancy I Williams, Rebecca J Mallinson, Emily A Southmayd, Heather C M Allaway, Mary Jane De Souza
Exercising women with menstrual disturbances frequently display a low resting metabolic rate (RMR) when RMR is expressed relative to body size or lean mass. However, normalizing RMR for body size or lean mass does not account for potential differences in the size of tissue compartments with varying metabolic activities. To explore whether the apparent RMR suppression in women with exercise-associated amenorrhea is a consequence of a lower proportion of highly active metabolic tissue compartments or the result of metabolic adaptations related to energy conservation at the tissue level, RMR and metabolic tissue compartments were compared among exercising women with amenorrhea (AMEN; n = 42) and exercising women with eumenorrheic, ovulatory menstrual cycles (OV; n = 37)...
August 1, 2016: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27362051/effects-of-menstrual-cycle-on-energy-utilization-during-exercise-in-eumenorrheic-women-3685-board-124-june-4-9-30-am-11-00-am
#14
Mikako Sakamaki-Sunaga, Kayoko Kamemoto, Mizuki Yamada, Kei Sato, Moe Machida, Sawako Wakui
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27362019/effects-of-aerobic-exercise-on-body-composition-at-different-phases-of-the-menstrual-cycle-3653-board-92-june-4-9-30-am-11-00-am
#15
P Gage Murphy, Shauna Peare, Melissa Jimenez, Murat Karabulut
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27360386/effects-of-the-menstrual-cycle-and-aerobic-exercise-on-salivary-secretory-immunoglobulin-a-1467-board-120-june-2-8-00-am-9-30-am
#16
Harumi Hayashida, Saori Yoshida, Seiichi Tanaka
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27359868/menstrual-cycle-affects-arterial-stiffness-after-high-intensity-resistance-exercise-725-board-41-june-1-3-30-pm-5-00-pm
#17
Takanobu Okamoto, Ryota Kobayashi, Mikako Sakamaki-Sunaga
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27281304/a-weight-loss-program-adapted-to-the-menstrual-cycle-increases-weight-loss-in-healthy-overweight-premenopausal-women-a-6-mo-randomized-controlled-trial
#18
Nina Rw Geiker, Christian Ritz, Sue D Pedersen, Thomas M Larsen, James O Hill, Arne Astrup
BACKGROUND: Hormonal fluctuations during the menstrual cycle influence energy intake and expenditure as well as eating preferences and behavior. OBJECTIVE: We examined the effect in healthy, overweight, premenopausal women of a diet and exercise weight-loss program that was designed to target and moderate the effects of the menstrual cycle compared with the effect of simple energy restriction. DESIGN: A total of 60 healthy, overweight, premenopausal women were included in a 6-mo weight-loss program in which each subject consumed a diet of 1600 kcal/d...
July 2016: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/27267895/sport-exercise-and-the-menstrual-cycle-where-is-the-research
#19
G Bruinvels, R J Burden, A J McGregor, K E Ackerman, M Dooley, T Richards, C Pedlar
No abstract text is available yet for this article.
June 6, 2016: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/27225433/serum-caffeine-and-paraxanthine-concentrations-and-menstrual-cycle-function-correlations-with-beverage-intakes-and-associations-with-race-reproductive-hormones-and-anovulation-in-the-biocycle-study
#20
Karen C Schliep, Enrique F Schisterman, Jean Wactawski-Wende, Neil J Perkins, Rose G Radin, Shvetha M Zarek, Emily M Mitchell, Lindsey A Sjaarda, Sunni L Mumford
BACKGROUND: Clinicians often recommend limiting caffeine intake while attempting to conceive; however, few studies have evaluated the associations between caffeine exposure and menstrual cycle function, and we are aware of no previous studies assessing biological dose via well-timed serum measurements. OBJECTIVES: We assessed the relation between caffeine and its metabolites and reproductive hormones in a healthy premenopausal cohort and evaluated potential effect modification by race...
July 2016: American Journal of Clinical Nutrition
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