Search Results
Results 151 - 200 of 1112
1 2 3 4 5 6 7 8 9 10 >
Nakamura Yuki - - 2011
: To investigate the effect of menstrual cycle states on ovarian and anabolic hormonal responses to acute resistance exercise in young women. : Eight healthy women (eumenorrhea; EM) and eight women with menstrual disorders including oligomenorrhea and amenorrhea (OAM) participated in this study. The EM group performed acute resistance exercises ...
Fowler Robin M - - 2011
To characterize the hemodynamic and ventilatory responses to exercise in a group of patients with unexplained dyspnea, increased risk for pulmonary arterial hypertension (PAH), and an elevated mean pulmonary artery pressure (mPAP; >30 mm Hg) on exercise. A total of 37 symptomatic patients at risk of PAH and 20 healthy ...
Casey Darren P - - 2011
We tested the hypothesis that 1) prostaglandins (PGs) contribute to compensatory vasodilation in contracting human forearm subjected to acute hypoperfusion, and 2) the combined inhibition of PGs and nitric oxide would attenuate the compensatory vasodilation more than PG inhibition alone. In separate protocols, subjects performed forearm exercise (20% of maximum) ...
Figueroa Arturo - - 2011
OBJECTIVE:: Menopause is associated with increased arterial stiffness and reduced muscle strength. Combined resistance (RE) and endurance (EE) exercise training can decrease brachial-ankle pulse wave velocity (baPWV), an index of arterial stiffness, in young men. We tested the hypothesis that combined circuit RE and EE training would improve baPWV, blood ...
Thijssen Dick H J - - 2011
Episodic increases in shear stress have been proposed as a mechanism which induces training-induced adaptation in arterial wall remodeling in humans. To address this hypothesis in humans, we examined bilateral brachial artery wall thickness using high-resolution ultrasound in healthy men across an 8-week period of bilateral handgrip training. Unilaterally, shear ...
Fowler Robin M - - 2011
Background: Exercise-induced pulmonary arterial hypertension (EIPAH) is associated with reduced peak exercise cardiac output (CO) and aerobic capacity (peak O(2) ). We investigated the validity of the encouraged six-minute walk test (6MWT) to identify exercise limitation and estimate aerobic capacity in subjects with EIPAH. Methods: Seventeen subjects with EIPAH (56 ...
Toyama Kensuke - - 2011
BACKGROUND: Coenzyme Q10 levels are low in patients with coronary artery disease (CAD), and increasing or preserving coenzyme Q10 could be a beneficial strategy. Exercise and statins improve high-density lipoprotein cholesterol (HDL-C) levels. However, statins inhibit coenzyme Q10 biosynthesis, and the combination of statins with coenzyme Q10 supplementation increases HDL-C ...
Fahs Christopher A - - 2011
Low-intensity blood flow restricted (LI-BFR) resistance training has been shown to produce comparable increases in muscle hypertrophy to traditional high-intensity (HI) resistance training. However, a comparison of the acute vascular responses between the two types of exercise has not been made. The purpose of this study is to compare the ...
Russo Nicola - - 2011
Background: An abnormal glucose tolerance (AGT) in coronary artery disease (CAD) patients could negatively influence recovery after an acute event but the question, relevant in the field of cardiac rehabilitation (CR), is still controversial. Design: Prospective study, aiming to establish the prevalence of AGT and its possible influence on functional ...
Tong Allison - - 2012
Background  Consumer involvement in guideline development is advocated, but minimal participation, such as a nominated consumer representative on a guideline working group, can inhibit their decision-making power and contribution. Little is known about how to involve consumers more effectively in guideline development. Objective  To describe a targeted approach for involving ...
Beck Ephraim B - - 2011
Objective: Exercise training partially corrects endothelial dysfunction in patients with coronary artery disease (CAD). Growth factors like vascular endothelial growth factor (VEGF) as well as erythropoietin (EPO) are known to modulate the bioavailability of nitric oxide and, thereby, contribute to the maintenance of a normal vascular tone. The aim of ...
Salvesen Kjell Å - - 2012
To study fetal wellbeing and uteroplacental blood flow during strenuous treadmill running in the second trimester. Six pregnant Olympic-level athletes in endurance events aged 28-37 years and training 15-22 h per week before the pregnancy were tested once at 23-29 weeks of pregnancy. The women ran three to five submaximal ...
Kadoglou Nikolaos P E - - 2011
Aim: To investigate the effects of exercise on atherosclerotic plaque composition, the concentration of matrix metalloproteinases (MMPs) in the atherosclerotic plaque and the systemic circulation. Methods: Ninety apolipoprotein E-deficient (apoE(-/-)) mice (45 male) were randomized to the following groups (n = 15 each): control male/female; sedentary male/female; exercise male/female. Mice ...
Callegaro Carine C - - 2011
The inspiratory metaboreflex is activated during loaded breathing to task failure and induces sympathetic activation and peripheral vasoconstriction that may limit exercise performance. Inspiratory muscle training appears to attenuate the inspiratory metaboreflex in healthy subjects. Since whole body aerobic exercise training improves breathing endurance and inspiratory muscle strength, we hypothesized ...
Nam Gi-Byoung - - 2011
Regular physical activity provides a variety of health benefits, including improvement in cardiopulmonary or metabolic status, reduction of the risk of coronary artery disease or stroke, prevention of cancer, and decrease in total mortality. Exercise-related cardiac events are occasionally reported during highly competitive sports activity or vigorous exercises. However, the ...
Page Phil - - 2011
Patellofemoral pain syndrome (PFPS) is associated with muscle imbalance at the knee and hip. Therapeutic exercise is effective at reducing pain associated with PFPS. To identify and analyze clinical trials of elastic resistance in patients with PFPS to determine its efficacy. PubMed, CINAHL, and PEDro databases were searched for terms ...
Michaelides A P AP Department of Cardiology, Athens University Medical School, Vrilissia, TK 15235, Athens, Greece. - - 2011
Exercise improves the clinical outcome of patients with coronary artery disease (CAD); however, the ideal exercise duration for each patient remains unclear. To investigate the effects of exercise duration on arterial elastic properties and antioxidant/pro-oxidant mechanisms in patients with CAD. Sixty male patients with CAD were randomised into two groups, ...
Jin Chun Zi - - 2011
Aims: A moderate increase in extracellular [K(+)] ([K(+)](e)) induces relaxation of small arteries via activating inwardly rectifying K(+) current (I(Kir)). The K(+)-vasodilation is an important mechanism for exercise-induced hyperemia in skeletal muscle. We investigated whether I(Kir) and K(+)-vasodilation are enhanced in deep femoral arteries (DFA) from exercise-trained rats (ET-rats, treadmill-running: ...
Phillips A A - - 2011
Study design:All randomized controlled trials, prospective cohort, case-controlled, pre-post studies and case reports that assessed exercise interventions, which influence arterial structure and function after spinal cord injury (SCI), were included.Objective:To review systematically the evidence for exercise as a therapy to alter arterial function in persons with SCI.Setting:Literature searches were conducted ...
Schlager O - - 2011
OBJECTIVES: Alterations of wall shear stress (WSS) are considered to precede atherosclerosis. Local variations of WSS might contribute to the typical distribution of atherosclerotic lesions along the superficial femoral artery (SFA). We investigated the course of WSS and its response to postural changes and exercise along the SFA of healthy ...
de Beer Vincent J - - 2011
We previously demonstrated that endothelin (ET)-mediated coronary vasoconstriction wanes with increasing exercise intensity via a nitric oxide- and prostacyclin-dependent mechanism (Ref. 23). Therefore, we hypothesized that the waning of ET coronary vasoconstriction during exercise is the result of decreased production of ET and/or decreased ET receptor sensitivity. We investigated coronary ...
Chapman Robert F - - 2011
ABSTRACT: The decline in maximal oxygen uptake (ΔVO2max) with acute exposure to moderate altitude is dependent on the ability to maintain arterial oxyhemoglobin saturation (SaO2). PURPOSE:: This study examined if factors related to ΔVO2max at altitude are also related to the decline in race performance of elite athletes at altitude. ...
Moyers Brian - - 2011
Dietary intake of n-3 polyunsaturated fatty acids is associated with a lower incidence of cardiovascular events. Mechanisms underlying this association are poorly understood but may include beneficial effects on physical conditioning and vagal tone. We investigated the association of n-3 fatty acid levels to exercise parameters in 992 subjects with ...
Mortensen Stefan P - - 2011
Intraluminal ATP could play an important role in the local regulation of skeletal muscle blood flow, but the stimuli that cause ATP release and the levels of plasma ATP in vessels supplying and draining human skeletal muscle remain unclear. To gain insight into the mechanisms by which ATP is released ...
Robles Juan Carlos - - 2011
Exercise training enhances endothelium-dependent coronary vasodilatation, improving perfusion and contractile function of collateral-dependent myocardium. Paradoxically, studies from our laboratory have revealed increased Ca(2+)-dependent basal active tone in collateral-dependent arteries of exercise-trained pigs. In this study, we tested the hypothesis that exercise training enhances agonist-mediated contractile responses of collateral-dependent arteries by ...
Casey Darren P - - 2011
We previously demonstrated that nitric oxide (NO) contributes to compensatory vasodilation in the contracting human forearm subjected to acute hypoperfusion. We examined the potential role of an adenosine-NO interaction to this response in 17 male subjects (25 ± 2 yr). In separate protocols subjects performed rhythmic forearm exercise (20% of ...
Shon Soo-Min - - 2011
Few studies have investigated if exercise by itself has anti-atherosclerotic effects, without combining interventions with a low-fat diet. We studied the effects of exercise as a stand-alone intervention on preexisting atheromata by measuring not only plaque size but also the levels of plaque-destabilizing matrix-metalloproteinase (MMP) activity in vivo. We used ...
Headley Samuel A - - 2011
Headley, SA, Henry, K, Nindl, BC, Thompson, BA, Kraemer, WJ, and Jones, MT. Effects of lifting tempo on one repetition maximum and hormonal responses to a bench press protocol. J Strength Cond Res 25(2): 406-413, 2011-This study was carried out in 2 parts: part 1 was designed to measure the ...
Goto Kazushige - - 2011
Goto, K, Maemura, H, Takamatsu, K, and Ishii, N. Hormonal responses to resistance exercise after ingestion of carnosine and anserine. J Strength Cond Res 25(2): 398-405, 2011-Intramuscular carnosine buffers protons (H) in skeletal muscle. We examined the effects of supplementation with chicken breast meat extract (CBEX) containing carnosine and anserine ...
Gonzales Joaquin U - - 2011
Skeletal muscle contractions are associated with physical stimuli that act upon muscle vasculature, including increased shear stress and blood pressure. It is unclear if acute dynamic exercise alters local vascular function. The purpose of this study was to examine the role of exercise hemodynamics on the effects of acute exercise ...
Goss Fredric L - - 2011
This investigation identified a perceptually-based "warning zone" that can be used to anticipate termination of treadmill tests administered to individuals taking beta-blockers. The use of ratings of perceived exertion to anticipate test termination may be valuable given the attenuation of heart rate associated with the use of this class of ...
Mahler Donald A - - 2011
Abstract BACKGROUND: Patients with chronic obstructive pulmonary disease (COPD) exhibit greater oxyhemoglobin desaturation during walking than with cycling. The purpose of this investigation was to investigate differences in ventilatory responses and gas exchange as proposed mechanisms for this observation. METHODS: Arterial blood gases and lactate were measured in 12 patients ...
Laksmivenkateshiah Srinivas - - 2011
OBJECTIVES: To examine the utility of decline in arterial partial pressure of oxygen after exercise as a marker of pulmonary vascular obstructive disease in patients with atrial septal defect and pulmonary hypertension. METHODS: Treadmill exercise was performed in 18 patients with atrial septal defect and pulmonary hypertension. Arterial blood gas ...
Padilla Jaume J Department of Biomedical Sciences, University of Missouri, Columbia, MO 65211, USA. - - 2011
Aging has been recently associated with increased retrograde and oscillatory shear in peripheral conduit arteries, a hemodynamic environment that favors a proatherogenic endothelial cell phenotype. We evaluated whether nitric oxide (NO) bioavailability in resistance vessels contributes to age-related differences in shear rate patterns in upstream conduit arteries at rest and ...
Dean Abigail S - - 2011
PURPOSE:: Peripheral vascular abnormalities contribute to compromised functional status in heart failure (HF) patients. The purpose of the present study was to test whether the intervention of moderate-intensity, resistance training could improve peripheral vascular responsiveness, that is, flow-mediated dilation (FMD) in HF. METHODS:: Baseline brachial artery FMD analysis (2 minutes ...
Phillips Shane A - - 2011
Resistance and aerobic exercise is recommended for cardiovascular health and disease prevention. However, the accompanying increase in arterial pressure during resistance exercise may be detrimental to vascular health. This study tests the vascular benefits of aerobic compared with resistance exercise on preventing impaired vascular function induced by a single weight ...
Cho Eun Jeung - - 2011
Type III hyperlipoproteinemia is a rare familial disease characterized by marked elevations of serum cholesterol and triglyceride levels caused by an accumulation of remnant lipoproteins in apolipoprotein E2/E2 homozygotes. It is associated with an increased risk for premature atherosclerotic vascular disease. A 55-year-old woman was diagnosed as having type III ...
Hurren Nicholas M - - 2011
Preprandial aerobic exercise lowers postprandial lipaemia (a risk factor for coronary heart disease), however, the mechanisms responsible are still not clear. This study investigated whether blood flow to skeletal muscle and/or the liver was increased in the postprandial period after exercise, relative to a control trial, and whether this resulted ...
Seeger J P H - - 2011
Children with diabetes mellitus type 1 (DM1) demonstrate endothelial dysfunction and mild artery wall thickening compared to their age-matched healthy peers. In this study, we examined the effect of 18-week exercise training on physical fitness, and vascular function and structure in children with DM1. We examined physical fitness, brachial artery ...
Wray D Walter - - 2011
In the peripheral circulation, nitric oxide (NO) is released in response to shear stress across vascular endothelial cells. We sought to assess the degree to which NO contributes to exercise-induced vasodilation in the brachial artery (BA) and to determine the potential of this approach to noninvasively evaluate NO bioavailability. In ...
Ghaffari Samad - - 2011
Background: Slow heart rate recovery (HRR) after exercise is considered to represent impaired parasympathetic tone and to be a predictor of all-cause and cardiovascular mortality, but the independent value of abnormal HRR in predicting the presence and severity of coronary artery disease (CAD) is unknown. The aim of this study ...
Cesar Liliana - - 2011
Diet and exercise promote cardiovascular health but their relative contributions to atherosclerosis are not fully known. The transition from a sedentary to active lifestyle requires increased caloric intake to achieve energy balance. Using atherosclerosis-prone ApoE-null mice we sought to determine whether the benefits of exercise for arterial disease are dependent ...
Nickel Kevin J KJ Department of Health and Exercise Science, University of Oklahoma, Norman, - - 2011
The effects of acute exercise on arterial compliance in older adults are unknown. Large and small arterial compliance were assessed during and 24 hours following a 30-minute bicycle ergometer test and on a nonexercise, control condition. The change in large artery compliance was similar between the exercise and nonexercise conditions ...
Casey Darren P - - 2011
Hypoxic vasodilation in skeletal muscle at rest is known to include β-adrenergic receptor-stimulated nitric oxide (NO) release. We previously reported that the augmented skeletal muscle vasodilation during mild hypoxic forearm exercise includes β-adrenergic mechanisms. However, it is unclear whether a β-adrenergic receptor-stimulated NO component exists during hypoxic exercise. We hypothesized ...
Nishiwaki Masato - - 2010
The objective of this study was to examine the effects of exercise training in hypoxia on arterial stiffness and flow-mediated vasodilation (FMD) in postmenopausal women. Sixteen postmenopausal women (56 ± 1 years) were assigned to a normoxic exercise group (Normoxic group, n = 8) or a hypoxic exercise group (Hypoxic group, n = 8). The Hypoxic group ...
Piira Olli-Pekka - - 2010
The incidence of adverse cardiovascular events is higher among spectators of exciting sports events, but the mechanistic link between the events is not known. We assessed the heart rate (HR) and blood pressure (BP) dynamics of enthusiastic male ice hockey spectators (60±9years) with coronary artery disease (CAD) during Finnish national ...
Flox-Camacho Angela - - 2011
Ergospirometry objectively quantifies exercise capacity. Up until now, the response to exercise evaluated by ergospirometry in patients with pulmonary arterial hypertension has only been described in recently diagnosed.patients. Our aim is to describe the response to exercise in patients with severe pulmonary arterial hypertension under specific treatment and define which ...
Fraser J A V - - 2011
Hyperoxia has been shown to attenuate the increase in pulmonary artery (PA) pressure associated with immersed exercise in thermoneutral water, which could serve as a possible preventive strategy for the development of immersion pulmonary edema (IPE). We tested the hypothesis that the same is true during exercise in cold water. ...
Naylor Louise H - - 2011
This study aimed to determine the importance of repeated increases in blood flow to conduit artery adaptation, using an exercise-independent repeated episodic stimulus. Recent studies suggest that exercise training improves vasodilator function of conduit arteries via shear stress-mediated mechanisms. However, exercise is a complex stimulus that may induce shear-independent adaptations. ...
Figueroa Arturo - - 2011
Exercise with whole-body vibration (WBV) decreases brachial-ankle pulse wave velocity (baPWV), a marker of systemic arterial stiffness. To examine the effect of WBV on arterial responses, 12 young men underwent three experimental trials: (1) no-exercise control (CON), (2) static squat with WBV, and (3) static squat without WBV (no-WBV). Bilateral ...
1 2 3 4 5 6 7 8 9 10 >