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Results 301 - 350 of 1182
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Samjoo Imtiaz A - - 2013
Lower skeletal muscle mitochondrial oxidative phosphorylation capacity (OXPHOS) and intramyocellular lipid (IMCL) accumulation have been implicated in the etiology of insulin resistance (IR) in obesity. The purpose of this study was to examine the impact of endurance exercise on biochemical and morphological measures of IMCL and mitochondrial content, and their ...
Prasertsri Piyapong - - 2013
Exercise training is known to increase fat utilization during exercise. Diets containing antioxidants and branch chain amino acids (BCAAs) are also reported to have potential effects on fat utilization. Cashew apple juice (CAJ) comprises many nutritional components including vitamin C and BCAAs. This study aimed to investigate the effect of ...
Alkahtani Shaea A SA School of Exercise and Nutrition Sciences, Queensland University of Technology, Australia & University of Dammam, P.O. Box 2375, Dammam, 31451 Saudi - - 2013
The objectives of this study were to examine the effect of 4-week moderate- and high-intensity interval training (MIIT and HIIT) on fat oxidation and the responses of blood lactate (BLa) and rating of perceived exertion (RPE). Ten overweight/obese men (age = 29 ±3.7 years, BMI = 30.7 ±3.4 kg/m(2)) participated in a cross-over study of 4-week ...
Mohammadi Mustafa - - 2013
Regular mild exercise enhances antioxidant and anti-inflammatory systems of the body. The present study investigates voluntary exercise effects on lead toxicity as a known oxidative stressor. Male Sprague-Dawley rats were randomly divided into 2 groups. Sedentary control: the animals were housed 7 weeks in the regular cages. Exercise group: the ...
Duvivier Bernard M F M - - 2013
BACKGROUND: Epidemiological studies suggest that excessive sitting time is associated with increased health risk, independent of the performance of exercise. We hypothesized that a daily bout of exercise cannot compensate the negative effects of inactivity during the rest of the day on insulin sensitivity and plasma lipids. METHODOLOGY/PRINCIPAL FINDINGS: Eighteen ...
Tsubone Hirokazu H Research Center for Food Safety, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, - - 2013
The present study aimed to clarify changes of oxidative stress and antioxidative functions in treadmill-exercised Thoroughbred horses (n=5, 3 to 7 years old), using recently developed techniques for measurement of serum d-ROMs for oxidative stress, and BAP for antioxidative markers. Also, the effect of nasogastric administration of hydrogen-rich water (HW) ...
Egger Andrea - - 2013
Intrahepatocellular (IHCL) and intramyocellular (IMCL) lipids are ectopic lipid stores. Aerobic exercise results in IMCL utilization in subjects over a broad range of exercise capacity. IMCL and IHCL have been related to impaired insulin action at the skeletal muscle and hepatic level, respectively. The acute effect of aerobic exercise on ...
Tong Tom K - - 2013
This study investigated the 1-year longitudinal effect of professional training in adolescent runners on redox balance during intense endurance exercise. Changes in selected serum oxidant and antioxidant status in response to a 21-km running time trial in 10 runners (15.5 ± 1.3 years) undergoing professional training were evaluated twice in ...
Claudio Erick R G - - 2013
The aim of this study was to evaluate the effects of swimming training (SW) and oestrogen replacement therapy (ERT) on coronary vascular reactivity and the expression of antioxidant enzymes in ovariectomized rats. Animals were randomly assigned to one of five groups: sham (SH), ovariectomized (OVX), ovariectomized with E2 (OE2), ovariectomized ...
Abadi Arkan - - 2013
Antioxidant supplements are widely consumed by the general public; however, their effects of on exercise performance are controversial. The aim of this study was to examine the effects of an antioxidant cocktail (α-lipoic acid, vitamin E and coenzyme Q10) on exercise performance, muscle function and training adaptations in mice. C57Bl/J6 ...
Gibala Martin J - - 2013
Team sports are characterized by intermittent high-intensity activity patterns. Typically, play consists of short periods of very intense or all-out efforts interspersed with longer periods of low-intensity activity. Fatigue is a complex, multi-factorial process, but intense intermittent exercise performance can potentially be limited by reduced availability of substrates stored in ...
McCarthy Cameron G - - 2013
Two prevalent origins of oxidative stress in Western society are the ingestion of high-fat meals and the performance of strenuous exercise. The purpose of this investigation was to compare the magnitude of increase in blood oxidative stress following acute feeding and acute exercise. Twelve exercise-trained men consumed a high-fat meal ...
Beckie Theresa M TM College of Nursing, University of South Florida, Tampa, FL, USA. - - 2013
The objective of this study was to examine the improvements in physiological outcomes, including exercise capacity, in women completing a 12-week gender-specific (tailored) compared with a traditional cardiac rehabilitation (CR) program. A 2-group randomized clinical trial compared symptom limited graded exercise test (SL-GXT), lipid, and anthropometric parameters among 99 women ...
Nakhostin-Roohi Babak B Department of Exercise Physiology, Ardabil Branch, Islamic Azad University, - - 2013
Methylsulfonylmethane (MSM) is a sulfur-containing compound commonly found in diet and known to reduce oxidative stress. This trial was conducted to determine whether single dose supplementation with MSM attenuates post-exercise oxidative stress in healthy untrained young men. Sixteen untrained men volunteered for this study. Participants were randomized in a double-blind ...
Paschalis Vassilis - - 2013
A novel automatic escalator was designed, constructed and used in the present investigation. The aim of the present investigation was to compare the effect of two repeated sessions of stair descending versus stair ascending exercise on muscle performance and health-related parameters in young healthy men. Twenty males participated and were ...
Gordon Lorenzo - - 2013
Oxidative stress promotes endothelial dysfunction and atherosclerosis in chronic renal disease. This study investigated the impact of Hatha yoga on oxidative stress indicators and oxidant status, in patients with end-stage renal disease (ESRD) on hemodialysis. This prospective randomized study consisted of 33 ESRD patients in the Hatha yoga exercise group ...
Mila-Kierzenkowska Celestyna C The Chair of Medical Biology, Collegium Medicum of Nicolaus Copernicus University, Karłowicza 24, 85-092 Bydgoszcz, - - 2013
The aim of the study was to determine the effect of single whole-body cryotherapy (WBC) session applied prior to submaximal exercise on the activity of antioxidant enzymes, the concentration of lipid peroxidation products, total oxidative status, and the level of cytokines in blood of volleyball players. The study group consisted ...
Eguchi Masafumi M Department of Health Development, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, - - 2013
The aim of this study was to determine whether accumulated short bouts of exercise can achieve the same cardiovascular benefits as a single long bout of exercise in sedentary male Japanese workers and to compare the programs' relative effects on oxidative stress. Twenty-three sedentary male workers were randomly assigned into ...
Res Peter T - - 2012
INTRODUCTION: Astaxanthin is a lipid-soluble carotenoid found in a variety of aquatic organisms. Prolonged astaxanthin supplementation has been reported to increase fat oxidative capacity and improve running time to exhaustion in mice. These data suggest that astaxanthin may be applied as a potent ergogenic aid in humans. PURPOSE: To assess ...
Dennis B Adam BA Section of Endocrinology, Diabetes and Metabolism, Department of Medicine, Medical College of Georgia, Augusta, GA 30912, - - 2013
This study aimed to determine whether oxidative stress was related to cardiovascular risk indices in children, and whether an exercise intervention would reduce oxidative stress. A randomized trial of two different doses of exercise and a no-exercise control group included 112 overweight and obese children, 7-11 years old. Plasma isoprostane ...
Germanou Evangelia I - - 2012
BACKGROUND: Obesity is associated with osteoarthritis and it is accompanied by chronic inflammation and elevated oxidative stress. Strengthening-type exercise is used in knee osteoarthritis (KOA) rehabilitation. This study determined how acute isokinetic exercise influences inflammatory responses of obese middle-aged women with KOA. METHODS: Ten obese women with KOA and 10 ...
Gu Qi - - 2012
It is well known that exercise training attenuates aortic remodeling and improves endothelial function in spontaneously hypertensive rats (SHR). However, the underlying molecular mechanism remains unclear. Hydrogen sulfide (H(2)S) and nitric oxide (NO), as two established physiologic messenger molecules, have important roles in the development of aortic remodeling and endothelial ...
Randell Rebecca K - - 2012
PURPOSE: The aim of this study was to investigate the effects of 1 day and 7 days ingestion of a green tea extract (GTE) on whole body fat oxidation during moderate-intensity exercise. METHODS: Thirty one males completed two exercise trials (60 min cycle 50% Wmax). Following the baseline trial (Day ...
Azizbeigi Kamal - - 2012
This study was undertaken to investigate the effects of progressive resistance training exercise (PRT) on plasma oxidative stress and antioxidant enzyme activity in erythrocytes. Twenty male volunteers were randomly assigned to two groups; progressive resistance training and control. Blood samples were collected before and after eight weeks of PRT, and ...
Rouffet David - - 2012
AIMS: Intramyocellular lipids (IMCL) variations in older men are poorly explored. In young adults, IMCL can be influenced both by diet and exercise interventions; this flexibility is related to aerobic fitness. We evaluated in active older adults, the influence of maximal aerobic capacity on short-term diet and exercise-induced variations in ...
Dalla Corte Cristiane L - - 2013
This study aimed to assess the potential protective effect of organic purple grape juice (PGJ) on oxidative stress produced by an exhaustive exercise bout in rats. To test this hypothesis, rats were acutely treated with organic PGJ (Vitis labrusca) and subsequently submitted to an exhaustive exercise bout. Parameters of oxidative ...
Sjøgaard Gisela - - 2013
The aim was to assess mRNA and/or protein levels of heat shock proteins, cytokines, growth regulating, and metabolic proteins in myalgic muscle at rest and in response to work tasks and prolonged exercise training. A randomized controlled trial included 28 females with trapezius myalgia and 16 healthy controls. Those with ...
Schippers Marie-Pierre - - 2012
The low oxygen levels at high altitude are a potent and unavoidable physiological stressor to which highland mammals must adapt. One hypothesized adaptation to high altitude is an increased reliance on carbohydrates to support aerobic activities. Based on stoichiometries of combustion, ATP yield per mole of oxygen from carbohydrates is ...
Bresciani Guilherme - - 2012
OBJECTIVES: In humans, the manganese-superoxide dismutase (MnSOD) gene contains a polymorphism (Ala16Val) that has been related to several metabolic dysfunctions and chronic diseases. However, the obtained results suggest that risks related to this polymorphism are directly influenced by environmental factors. Because few studies have analyzed this possible influence, we performed ...
Shiraev Tim - - 2012
Obesity rates in Australia are among the highest in the world, with one in 4 adults being obese. Obesity increases the risk of coronary heart disease, type 2 diabetes mellitus (T2DM) and stroke, three of the top five causes of burden of disease and injury in Australia.2 Dietary modification is ...
Morencos E - - 2012
Background and aim: Many exercise studies, although generally showing the beneficial effects of supervised aerobic, resistance or combined exercise on blood lipids, have sometimes reached equivocal conclusions. The aim of this study is to evaluate the impact of different programs that combined exercise and dietary restriction on blood lipids versus ...
Pugh Meredith E ME Division of Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA. - - 2012
The 6-min walk test, commonly used to assess exercise capacity and response to therapy in pulmonary arterial hypertension (PAH), has many well-described limitations. Sedentary time is associated with adverse cardiovascular outcomes and reduced quality of life, and measuring sedentary time and physical activity using accelerometry is another potential way to ...
Chi Aiping - - 2012
To investigate the effects of polysaccharide from Gynostemma pentaphyllum on antioxidant activity in skeletal muscle of mice exercised to exhaustion. Three polysaccharide fractions were obtained from G. pentaphyllum polysaccharide (GPP) and termed GPP1-a, GPP2-b, and GPP3-a. Gas chromatography (GC) and infrared spectrum of the polysaccharides were determined. The fractions were ...
Jówko Ewa - - 2012
To evaluate the effect of acute ingestion of green tea polyphenols (GTP) on blood markers of oxidative stress and muscle damage in soccer players exposed to intense exercise. This randomized, double-blinded study was conducted on 16 players during a general preparation period, when all athletes participated in a strength-training program ...
Siciliano Gabriele G Department of Neuroscience, University of Pisa, Pisa, Italy. - - 2012
In mitochondrial myopathies with respiratory chain deficiency impairment of energy cell production may lead to in excess reactive oxygen species generation with consequent oxidative stress and cell damage. Aerobic training has been showed to increase muscle performance in patients with mitochondrial myopathies. Aim of this study has been to evaluate, ...
Song Woo Jung - - 2012
To investigate the effect of progressive resistance training (PRT) on body composition, physical fitness, quality of life, lipid and nutritional profile of patients on hemodialysis (HD). A non equivalent comparison group pretest and posttest design study was used with 40 participants who were randomly assigned to the exercise group (20 ...
Conley Kevin - - 2012
Increased VO2max, mitochondrial capacity and energy coupling efficiency are reported after endurance training (ET) in adult subjects. Here we test whether leg exercise performance (power output of the legs, Pmax, at VO2max) reflects these improvements with ET in the elderly. Fifteen male and female subjects were endurance trained for a ...
Arikawa Andrea Y AY University of Minnesota, Department of Food Science and Nutrition, Paul, MN 55108, USA. - - 2013
The purpose of this trial was to determine whether exercise without weight loss would reduce F2-isoprostanes in previously sedentary young women. Participants (N=319) were randomized to four months of 150min/week aerobic exercise or a control group. Plasma free F2-isoprostanes were measured by gas chromatography-mass spectrometry. Other assessments included fitness and ...
Koves Timothy R TR Sarah W. Stedman Nutrition & Metabolism Center, Duke University, Durham, NC, - - 2013
Intramuscular accumulation of triacylglycerol, in the form of lipid droplets (LD), has gained widespread attention as a hallmark of metabolic disease and insulin resistance. Paradoxically, LDs also amass in muscles of highly trained endurance athletes who are exquisitely insulin sensitive. Understanding the molecular mechanisms that mediate the expansion and appropriate ...
Knaub Leslie A LA Division of Endocrinology, Diabetes and Metabolism, Anschutz Medical Campus, University of Colorado Denver, Aurora, CO 80045, - - 2013
Physical activity decreases risk for diabetes and cardiovascular disease morbidity and mortality; however, the specific impact of exercise on the diabetic vasculature is unexamined. We hypothesized that an acute, moderate exercise intervention in diabetic and hypertensive rats would induce mitochondrial biogenesis and mitochondrial antioxidant defence to improve vascular resilience. SHHF/Mcc-fa(cp) ...
Quinn Lebris S LS S-182 Geriatric Research, Education, and Clinical Center, VA Puget Sound Health Care System, 1660 South Columbian Way, Seattle, WA 98108, USA. - - 2013
Endurance exercise initiates a pattern of gene expression that promotes fat oxidation, which in turn improves endurance, body composition, and insulin sensitivity. The signals from exercise that initiate these pathways have not been completely characterized. IL-15 is a cytokine that is up-regulated in skeletal muscle after exercise and correlates with ...
Radak Zsolt Z Faculty of Physical Education and Sport Science, Institute of Sport Science, Semmelweis University, Budapest, Hungary. - - 2013
The complexity of human DNA has been affected by aerobic metabolism, including endurance exercise and oxygen toxicity. Aerobic endurance exercise could play an important role in the evolution of Homo sapiens, and oxygen was not important just for survival, but it was crucial to redox-mediated adaptation. The metabolic challenge during ...
Taito Shunsuke - - 2013
Cigarette smoking increases oxidative stress, which is a risk factor for several diseases. Smoking has also been reported to enhance plasma oxidative stress during strenuous exercise. However, no prior study has examined the changes in plasma oxidative stress after single-sprint anaerobic exercise in cigarette smokers. The purpose of this study ...
Conti Valeria - - 2012
PURPOSE: Moderate aerobic exercise reduces oxidative stress, intense physical activity may produce the opposite result. At present, the effects of different exercise loads on oxidative stress markers and the response of human cells to different exercise volumes have not been fully elucidated. METHODS: Human (Eahy-926) endothelial cells (ECs), exposed or ...
Copp Steven W - - 2012
Excess reactive oxygen species are implicated in the impaired peripheral vascular function evident during exercise in older individuals. We tested the hypothesis that an acute infusion of the antioxidant ascorbic acid (AA) in old rats would improve antioxidant capacity and reduce oxidative stress and, therefore, elevate hindlimb muscle blood flow ...
Ranković Goran G Faculty of Medicine, University of Nis, Nis, Serbia. - - 2012
[corrected] Regular physical activity is widely accepted as factor that reduces all-cause mortality and improves a number of health outcomes. The aim of this study was to investigate the effects of aerobic exercise training on cardiovascular parameters, lipid profile and endothelial function in patients with stable coronary artery disease (CAD). ...
Takahashi Masaki - - 2012
The purpose of this study was to investigate the effects of low-volume exercise training (100 min/week) on oxidative stress and neutrophils activation markers in older adults. Twenty-eight older adults (age range 65-78 years) were assigned into control (n = 14) or exercise (n = 14) groups. The exercise program consisted of walking 30-60 min/session, 2 days each week ...
Sharman James E - - 2012
OBJECTIVE: Exaggerated exercise blood pressure (BP) predicts mortality. Some studies suggest this could be explained by chronic hyperlipidemia, but whether acute-hyperlipidemia effects exercise BP has never been tested, and was the aim of this study. METHODS: Intravenous infusion of saline (control) and Intralipid were administered over 60 min in 15 healthy ...
Kadoglou N P E - - 2012
OBJECTIVE: Adipokines, visfatin, apelin, vaspin and ghrelin have emerged as novel cardiovascular risk factors. We aimed to evaluate the effects of different exercise modalities on the aforementioned novel adipokines and carotid intima-media thickness in patients with Type 2 diabetes mellitus. METHODS: One hundred patients with Type 2 diabetes were equivalently (n = 25) randomized ...
Gholitabar Samira - - 2012
This study evaluates the effect of treadmill exercise and Ferula gummosa (FG) on heat shock protein (HSP72), biomarkers related to vascular function, and oxidant/antioxidant system in the heart tissue of spontaneously hypertensive rats treated with N(ω)-nitro-l-arginine-methyl ester (l-NAME). Fifty adult male Wistar rats are randomly classified into five groups: treadmill ...
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