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Sex AND exercise

Rafael Mesquita, Frits M E Franssen, Sarah Houben-Wilke, Nicole H M K Uszko-Lencer, Lowie E G W Vanfleteren, Yvonne M J Goërtz, Fabio Pitta, Emiel F M Wouters, Martijn A Spruit
BACKGROUND: It remains unknown whether and to what extent impaired left ventricular ejection fraction (LVEF) affects physical and psychological status in COPD. We aimed to compare health outcome measures between COPD patients with and without impaired LVEF after adjusting for age, sex, BMI and FEV1. METHODS: Impaired LVEF was defined as values <50%. 85 COPD patients with impaired LVEF and 85 COPD patients with normal LVEF were matched for sex, age, BMI and FEV1...
October 11, 2016: International Journal of Cardiology
Susan E Luczak, Rubin Khoddam, Sheila Yu, Tamara L Wall, Anna Schwartz, Steve Sussman
BACKGROUND AND OBJECTIVES: We conducted a review of the prevalence and co-occurrence of 12 types of addictions in US ethnic/racial groups and discuss the implications of the results for genetic research on addictions. METHODS: We utilized MEDLINE and PsycINFO databases to review the literature on alcohol, tobacco, marijuana, illicit drugs, gambling, eating/food, internet, sex, love, exercise, work, and shopping. We present results for each addiction based on total US prevalence, prevalence within ethnic groups, and co-occurrence of addictions among ethnic groups when available...
October 19, 2016: American Journal on Addictions
Luciana G Madeira, Renata Lf Passos, Juliana F de Souza, Nilton A Rezende, Luiz O C Rodrigues
Objective: Neurofibromatosis type 1 (NF1) causes neural and cutaneous disorders and reduced exercise capacity. Exercise/heat exposure increasing internal temperature must be compensated by eccrine sweat function and warmed skin vasodilation. We suspected NF1 could adversely affect eccrine sweat function and/or vascular thermoregulatory responses (VTR). Methods: The eccrine sweat function and VTR of 25 NF1 volunteers (14 males, 11 females; 16-57 years old) were compared with 23 non-NF1 controls matched by sex, age, height and weight (CG)...
October 2016: Arquivos de Neuro-psiquiatria
Steven J Keteyian, Dennis J Kerrigan, Jonathan K Ehrman, Clinton A Brawner
PURPOSE: To describe exercise training workloads, estimated as metabolic equivalents of task (METs) both upon exit from cardiac rehabilitation (CR) and as the change in MET level following CR, stratified by age, sex, initial MET level, number of sessions completed, and qualifying event at entry into CR. METHODS: A retrospective study involving 8319 (31% female) patients who completed ≥9 exercise training sessions in the early outpatient CR program at Henry Ford Hospital...
October 14, 2016: Journal of Cardiopulmonary Rehabilitation and Prevention
Martin Schultz, Chloe Park, James Sharman, Abigail Fraser, Laura Howe, Debbie Lawlor, Nish Chaturvedi, George Davey Smith, Alun Hughes
OBJECTIVE: Dynamic exercise results in an increase to systolic blood pressure (BP). Irrespective of resting BP, some individuals may experience an exaggerated rise in systolic BP with exercise, which in adulthood, is associated with greater risk of developing hypertension, cardiovascular morbidity and mortality. It is not known if exercise BP is associated with adverse cardiovascular risk during adolescence. We determined associations of exercise BP with left ventricular mass (LVM) in adolescents, with consideration of the possible confounding effect of body composition...
September 2016: Journal of Hypertension
Richard S Metcalfe, Nicolas Tardif, Dylan Thompson, Niels B J Vollaard
Previously it has been reported that reduced-exertion high-intensity interval training (REHIT; total training time of 3 × 10 min per week) improves maximal aerobic capacity in both sedentary men and women, but improves insulin sensitivity in men only. The aim of the present study was to determine whether there is a true sex difference in response to REHIT, or that these findings can be explained by the large interindividual variability in response inherent to all exercise training. Thirty-five sedentary participants (18 women; mean ± SD age for men and women, respectively: age, 33 ± 9 and 36 ± 9 years; body mass index, 25...
July 7, 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
Mahmoud Al Rifai, Jaideep Patel, Rupert K Hung, Khurram Nasir, Steven J Keteyian, Clinton A Brawner, Jonathan K Ehrman, Sherif Sakr, Roger S Blumenthal, Michael J Blaha, Mouaz H Al-Mallah
BACKGROUND: Cardiorespiratory fitness protects against mortality; however, little is known about the benefits of improved fitness in individuals with a family history of coronary heart disease. We studied the association between cardiorespiratory fitness and risk of incident coronary heart disease and all-cause mortality, hypothesizing an inverse relationship similar to individuals without a family history of coronary heart disease. METHODS: We included 57,999 patients (53±13 years; 49% females; 29% Black), from the Henry Ford Exercise Testing (FIT) Project...
October 14, 2016: American Journal of Medicine
Donald Nuss, Robert J Obermeyer, Robert E Kelly
Historically, pectus excavatum (PE) was reported to be congenital, but in our experience only 22% are noticed in the first decade of life. Thus far, genetic studies support an autosomal recessive heritability, which coincides with only 40% of our patients having some positive family history, but is also contradictory given a constant sex ratio of 4:1 in favor of males. This inconsistency may be explained by the effect of more than one pectus disease-associated allele. Once the deformity is noticed, it tends to progress slowly until puberty, when rapid progression is often seen...
September 2016: Annals of Cardiothoracic Surgery
Wouter J Harmsen, Gerard M Ribbers, Bart Zegers, Emiel M Sneekes, Stephan F E Praet, Majanka H Heijenbrok-Kal, Ladbon Khajeh, Fop van Kooten, Sebastiaan J C M M Neggers, Rita J van den Berg-Emons
Patients with aneurysmal subarachnoid hemorrhage (a-SAH) show long-term fatigue and face difficulties in resuming daily physical activities. Impaired muscle strength, especially of the lower extremity, impacts the performance of daily activities and may trigger the onset of fatigue complaints. The present study evaluated knee muscle strength and fatigue in patients with a-SAH. This study included 33 patients, 6 months after a-SAH, and 33 sex-matched and age-matched healthy controls. Isokinetic muscle strength of the knee extensors and flexors was measured at 60 and 180°/s...
October 12, 2016: International Journal of Rehabilitation Research. Revue Internationale de Recherches de Réadaptation
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
Elisa Fabbri, Chee W Chia, Richard G Spencer, Kenneth W Fishbein, David A Reiter, Donnie Cameron, Ariel C Zane, Zenobia A Moore, Marta Gonzalez-Freire, Marco Zoli, Stephanie A Studenski, Rita R Kalyani, Josephine M Egan, Luigi Ferrucci
Whether individuals with insulin resistance but without criteria for diabetes exhibit reduced mitochondrial oxidative capacity is unclear; addressing this question could guide research for new therapeutics. We investigated 248 non-diabetic participants from the Baltimore Longitudinal Study of Aging (BLSA) to determine whether impaired mitochondrial capacity is associated with prediabetes, insulin resistance, duration and severity of hyperglycemia exposure. Mitochondrial capacity was assessed as post-exercise phosphocreatine recovery time constant (τPCr) by (31)P-magnetic resonance spectroscopy, with higher τPCr reflecting reduced capacity...
October 13, 2016: Diabetes
Sean Mendez, Louis Watanabe, Rachel Hill, Meredith Owens, Jason Moraczewski, Glenn C Rowe, Nicole C Riddle, Laura K Reed
Obesity is one of the dramatic health issues affecting developed and developing nations, and exercise is a well-established intervention strategy. While exercise-by-genotype interactions have been shown in humans, overall little is known. Using the natural negative geotaxis of Drosophila melanogaster, an important model organism for the study of genetic interactions, a novel exercise machine, the TreadWheel, can be used to shed light on this interaction. The mechanism for inducing exercise with the TreadWheel is inherently gentle, thus minimizing possible confounding effects of other stressors...
2016: PloS One
Nese Direk, Marieke J H J Dekker, Annemarie I Luik, Clemens Kirschbaum, Yolanda B de Rijke, Albert Hofman, Witte J G Hoogendijk, Henning Tiemeier
Determinants of the hypothalamic-pituitary-adrenal (HPA) axis functioning are increasingly explored in population-based studies. However, functional tests measuring the negative feedback of the HPA axis cannot easily be implemented into large observational studies. Furthermore, high doses of dexamethasone often completely suppress the HPA axis in healthy persons. This study aimed to detect the effects of the health, lifestyle and sociodemographic factors, psychiatric problems and cognitive functions on the negative feedback of the HPA axis using a very low-dose (0...
2016: PloS One
Thomas Westergren, Sveinung Berntsen, Karin C Lødrup Carlsen, Petter Mowinckel, Geir Håland, Liv Fegran, Kai-Håkon Carlsen
BACKGROUND: Children with asthma may be less physically active than their healthy peers. We aimed to investigate if perceived exercise limitation (EL) was associated with lung function or bronchial hyperresponsiveness (BHR), socio-economic factors, prenatal smoking, overweight, allergic disease, asthma severity or physical activity (PA). METHODS: The 302 children with asthma from the 10-year examination of the Environment and Childhood Asthma birth cohort study underwent a clinical examination including perceived EL (structured interview of child and parent(s)), measure of overweight (body mass index by sex and age passing through 25kg/m(2) or above at18 years), exercise-induced bronchoconstriction (forced expiratory volume in one second (FEV1 ) pre- and post-exercise), methacholine bronchial challenge (severe BHR; provocative dose causing ≥20% decrease in FEV1≤1μmol) and asthma severity score (dose of controller medication and exacerbations last 12 months)...
October 13, 2016: Pediatric Allergy and Immunology
Joseph J Knapik, Francis G O'Connor
Exertional rhabdomyolysis (ER) is a medical condition whereby damage to skeletal muscle is induced by excessive physical activity in otherwise healthy individuals. The individual performs so much activity that he/ she presumably depletes local muscle energy stores and muscle cells are unable to maintain cellular integrity, resulting in cell damage and the release of cellular contents, with resultant secondary complications. In the military services, the incidence of ER appeared to increase in the period 2004 to 2015...
2016: Journal of Special Operations Medicine: a Peer Reviewed Journal for SOF Medical Professionals
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
Samantha G Farris, Michelle L Davis, David Rosenfield, Brooke Y Kauffman, Scarlett O Baird, Mark B Powers, Michael W Otto, Bess H Marcus, Timothy S Church, Jasper A J Smits, Michael J Zvolensky
There is little known about factors that contribute to the comorbidity of cigarette smoking and obesity. The current study sought to test whether exercise self-efficacy moderated the relation between anxiety sensitivity (fear of internal sensations) and BMI and exercise tolerance among cigarette smokers. Smokers (n = 72; 50% female; Mcpd = 19.3, SD = 10.65) were recruited to participate in a smoking cessation treatment trial. During medical screen, we measured weight, height, and exercise tolerance (functional capacity) employing a standardized maximal exercise testing protocol...
March 2016: Mental Health and Physical Activity
Marek Kociuba, Slawomir Kozieł, Raja Chakraborty, Zofia Ignasiak
Humans exhibit sex differences in competitiveness, sensation seeking and risk-taking attitude, which are required in sports. These attributes are often linked to prenatal testosterone (PT) exposure. The second-to-fourth digit length ratio (2D:4D) is an indicator of PT exposure. A lower 2D:4D indicates higher PT exposure and vice versa. Males generally have a lower 2D:4D than females. Sensation- and/or thrill-seeking behaviours have also been found to be negatively associated with 2D:4D. Boxing and judo are considered to be high-risk sports...
October 11, 2016: Journal of Biosocial Science
S V Madhu, Abhishek Raj, Stuti Gupta, S Giri, Usha Rusia
BACKGROUND: We investigated the effect of iron deficiency anemia (IDA) on levels of glycated hemoglobin (HbA1c) and to compare its levels before and after iron supplementations. METHODS: Age and sex matched subjects were enrolled and clustered in 2 groups: IDA (n=62) and healthy controls (HC; n=60). HbA1c levels were estimated by HPLC. Hemogram were estimated by hematology analyser. Serum ferritin (ELISA) and other parameters of iron profile were measured by standard guidelines of ICSH...
October 5, 2016: Clinica Chimica Acta; International Journal of Clinical Chemistry
Jesús Millán, Juan Pedro-Botet, Elisenda Climent, Joaquín Millán, Joan Rius
BACKGROUND AND OBJECTIVE: Muscle symptoms, with or without elevation of creatin kinase are one of the main adverse effects of statin therapy, a fact that sometimes limits their use. The aim of this study was to evaluate the clinical characteristics of patients treated with statins who have complained muscle symptoms and to identify possible predictive factors. PATIENTS AND METHODS: A cross-sectional one-visit, non-interventional, national multicenter study including patients of both sexes over 18 years of age referred for past or present muscle symptoms associated with statin therapy was conducted...
October 4, 2016: Clínica e Investigación en Arteriosclerosis
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