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Stokes Keith A - - 2012
Exercise is a potent stimulus for release of growth hormone (GH), cortisol, testosterone and prolactin, and prolonged exercise inhibits insulin secretion. These responses seem to be specific to the type of exercise but this has been poorly characterised primarily because they have not been compared during exercise performed by the ...
Zebrowska A - - 2012
The study aimed at evaluating changes in plasma levels of insulin-like growth factor 1 (IGF-1), insulin-like growth factor binding protein-3 (IGFBP-3), testosterone, growth hormone (GH), cortisol, and insulin in resistance-trained male athletes with (n=9) and without (n=9) left ventricular hypertrophy (LVH) in response to eccentric (ECC) and concentric (CON) arm ...
Patterson Stephen D - - 2012
It has been suggested that circulating hormones and cytokines are important in the adaptive response to low-load resistance training (LLRT) with blood flow restriction (BFR); however, their response following this type of training in older men is unclear. Seven healthy older men (age 71.0 ± 6.5 year, height 1.77 ± 0.05 m, body mass 80.0 ± 7.5 kg; mean ± SD) ...
Hamouti Nassim - - 2013
Blood serum osmolality (S (OSM)) is the gold standard to assess body fluid balance. Urine specific gravity (U (SG)) is also a body fluid balance index but it is not invasive. However, U (SG) capability to detect the minimal level of dehydration that affects athletic performance (i.e., 2 %) remains ...
Kamijo Yoshi-Ichiro - - 2012
We examined whether carbohydrate in beverages accelerated fluid retention during recovery from thermal and exercise-induced dehydration and whether it was caused in part by an enhanced renal Na(+) reabsorption rate due to insulin secretion. After dehydrating by ~2.3% body weight by exercise in a hot environment, seven young men underwent ...
Muñoz C X - - 2012
Only limited research evaluates possible benefits of combined drinking and external cooling (by pouring cold water over the body) during exercise. Therefore, this study examined cold water drinking and external cooling on physiological, perceptual, and performance variables in hot, dry environments. Ten male runners completed four trials of walking 90 min ...
Masschelein Evi - - 2012
Exercise tolerance is impaired in hypoxia, and it has recently been shown that dietary nitrate supplementation can reduce the oxygen (O(2)) cost of muscle contractions. Therefore, we investigated the effect of dietary nitrate supplementation on arterial, muscle, and cerebral oxygenation status, symptoms of acute mountain sickness (AMS), and exercise tolerance ...
Rollo Ian - - 2012
The purpose of the present investigation was to investigate the influence of ingesting a carbohydrate-electrolyte beverage ad-libitum or as a prescribed volume on 10 mile run performance and gastrointestinal discomfort. Nine male recreational runners completed the 10 mile run under the following three conditions (1) no drinking (ND; 0 ml, ...
Watson Phillip - - 2012
Eight males were recruited to a study designed to examine the effect of tyrosine supplementation on the capacity to perform prolonged exercise in a warm environment. Subjects entered the laboratory in the morning and remained seated for 1 h before cycling to exhaustion at 70% VO2 peak. Two 250 mL ...
Wegmann Melissa - - 2012
Pre-cooling is used by many athletes for the purpose of reducing body temperature prior to exercise and, consequently, decreasing heat stress and improving performance. Although there are a considerable number of studies showing beneficial effects of pre-cooling, definite conclusions on the effectiveness of pre-cooling on performance cannot yet be drawn. ...
Burdon Catriona A - - 2012
Beverage palatability is known to influence fluid consumption during exercise and may positively influence hydration status and help to prevent fatigue, heat illness and decreased performance. PURPOSE: The aims of this review were to evaluate the effect of beverage temperature on fluid intake during exercise and investigate the influence of ...
Burdon Catriona A - - 2012
Beverage palatability is known to influence fluid consumption during exercise and may positively influence hydration status and help prevent fatigue, heat illness, and decreased performance. The aims of this review were to evaluate the effect of beverage temperature on fluid intake during exercise and investigate the influence of beverage temperature ...
Burke Louise M - - 2012
PURPOSE: We have previously shown that the aminoacidemia caused by the consumption of a rapidly digested protein after resistance exercise enhances muscle protein synthesis (MPS) more than the amino acid (AA) profile associated with a slowly digested protein. Here, we investigated whether differential feeding patterns of a whey protein mixture ...
Burke Louise M - - 2012
Abstract Ramadan fasting, involving abstinence from fluid and food from sunrise to sundown, results in prolonged periods without nutrient intake and inflexibility with the timing of eating and drinking over the day. Dietary choices may also change due to special eating rituals. Although nutrition guidelines are specific to the sport, ...
Turley Kenneth R - - 2012
The effects of caffeine on anaerobic exercise in young boys was investigated. Twenty-four healthy 8-10 year old boys participated in a randomized double-blind, double-crossover, counter-balanced study. Each subject received the caffeinated drink (CAF-5 mg · kg-1) or placebo (PL) twice each on four separate visits. Sixty minutes following ingestion of ...
Tamam Shlomi - - 2012
The effect of short duration exercise (EXR) on food intake (FI) and energy balance (EB) is not well understood in either normal weight (NW) or overweight (OW) and obese (OB) 9-14 years old children. Our purpose was to describe the effects of activity and a glucose drink on short term ...
Gwacham Nnamdi - - 2012
Consumption of energy drinks is common among athletes; however, there is a lack of research on the efficacy of these beverages for short-duration, intense exercise. The purpose of this research was to investigate the acute effects of a low-calorie caffeine-taurine energy drink (AdvoCare Spark) on repeated sprint performance and anaerobic ...
Park Sung Geon - - 2012
The purpose of this study was to determine the effects of beverage temperature and composition on weight retention and fluid balance upon voluntary drinking following exercise induced-dehydration. Eight men who were not acclimated to heat participated in four randomly ordered testing sessions. In each session, the subjects ran on a ...
van Rosendal Simon P - - 2012
PURPOSE: Intravenous (IV) saline has been used by athletes attempting to accelerate rehydration procedures. The diuresis from IV rehydration may be circumvented through the concomitant use of oral glycerol. We aimed to examine the effects of rehydrating with four different regimes of IV fluid and oral glycerol on subsequent 40 ...
Sasaki Nobuyuki - - 2012
ABSTRACT: Study Design. Descriptive experimental study.Objective. The aim of this study was to investigate the effect of exercise on cell proliferation in different areas of the IVD and recruitment of cells possibly active in regeneration of normal rat lumbar IVDs.Summary of Background Data. Little is known about the effects of ...
Gwacham Nnamdi - - 2012
Consumption of energy drinks is common among athletes; however, there is a lack of research on the efficacy of these beverages for short-duration, intense exercise. The purpose of this research was to investigate the acute effects of a low-calorie, caffeine-taurine, energy drink (AdvoCare Spark®) on repeated sprint performance and anaerobic ...
Siegler Jason - - 2012
As most sport drinks contain some form of non-nutritive sweetener (e.g. aspartame), and with the variation in blood glucose regulation and insulin secretion reportedly associated with aspartame, a further understanding of the effects on insulin and blood glucose regulation during exercise is warranted. Therefore, the aim of this preliminary study ...
Xu Jun - - 2012
Health-related quality of life (HRQoL) has been increasingly acknowledged as a valid and appropriate indicator of public health and chronic morbidity. However, limited research was conducted among Chinese civil servants owing to the different lifestyle. The aim of the study was to evaluate the HRQoL among Chinese civil servants and ...
Del Coso Juan - - 2012
To investigate the effects of a caffeine-containing energy drink on soccer performance during a simulated game. A second purpose was to assess the post-exercise urine caffeine concentration derived from the energy drink intake. Nineteen semiprofessional soccer players ingested 630 ± 52 mL of a commercially available energy drink (sugar-free Red ...
James Lewis J - - 2012
Many active people finish exercise hypohydrated, so effective rehydration after exercise is an important consideration. To determine the effects of a rehydration solution containing whey protein isolate on fluid balance after exercise-induced dehydration. Randomized controlled clinical trial. University research laboratory. Twelve healthy men (age = 21 ± 1 years, height ...
Blackmore Daniel G - - 2012
Here we demonstrate, both in vivo and in vitro, that growth hormone (GH) mediates precursor cell activation in the subventricular zone (SVZ) of the aged (12-month-old) brain following exercise, and that GH signaling stimulates precursor activation to a similar extent to exercise. Our results reveal that both addition of GH ...
Friedenreich Christine M - - 2011
Physical activity is a known modifiable lifestyle means for reducing postmenopausal breast cancer risk, but the biologic mechanisms are not well understood. Metabolic factors may be involved. In this study, we aimed to determine the effects of exercise on insulin resistance (IR) indicators, IGF1, and adipokines in postmenopausal women. The ...
Schmitz Kathryn H - - 2011
Relating to the report of Irwin and colleagues in this issue of the journal (beginning on page 522), this perspective discusses exercise training interventions as secondary prevention in breast cancer survivors. Burgeoning observational evidence indicates that prescribing aerobic exercise of 3 hours or more per week could have meaningful mortality ...
Hayes Sandra - - 2011
BACKGROUND: Exercise for Health was a pragmatic, randomised, controlled trial comparing the effect of an eight-month exercise interventionon function, treatment-related side effects and quality of life following breast cancer, compared with usual care. The intervention commenced six weeks post-surgery, and two modes of delivering the same intervention was compared with ...
Gómez A M - - 2011
The purpose of this randomized controlled trial was to determine the effects of an 8-week (aerobic+strength) exercise training program (3 sessions/week) on the circulating cytokine levels of breast cancer survivors. We randomly allocated 16 female survivors of breast cancer (mean±SD age: 50±5 years) to an intervention or usual care (control) ...
Kim Soo Hyun - - 2011
Purpose/Objectives: To investigate the feasibility and preliminary effects of a simultaneous stage-matched exercise and diet (SSED) intervention in breast cancer survivors.Design: Randomized, controlled trial.Setting: Oncology outpatient treatment clinics at the National Cancer Center in South Korea.Sample: 45 women with breast cancer who completed their cancer therapy.Methods: Participants were assigned to ...
Stoutenberg Mark - - 2011
Recent evidence demonstrates that exercise training can provide numerous physical and psychosocial benefits for breast cancer (BCa) survivors. However, educational training programs designed to disseminate exercise training information to survivors are scarce. The From Surviving to Thriving (FST) Colloquium was a one-and-a-half-day event that featured presentations on wellness topics from ...
LaStayo Paul C - - 2011
Resistance exercise programs with high compliance are needed to counter impaired muscle and mobility in older cancer survivors. To date outcomes have focused on older prostate cancer survivors, though more heterogeneous groups of older survivors are in-need. The purpose of this exploratory pilot study is to examine whether resistance exercise ...
Alleman Rick J RJ - - 2011
Several isolated ingredients have been proposed to increase growth hormone (GH) release, including Chlorophytum borivilianum and Velvet bean. A combination of these two ingredients has been packaged within an investigational dietary supplement. It was the purpose of the present investigation to determine the impact of acute ingestion of this supplement ...
Yamaguchi Takashi T Center of Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, 564-1 Shimoshizu, Sakura City, Chiba 285-8741, - - 2011
The mechanism by which exercise reduces visceral fat is not fully understood. We have reported that increase in serum growth hormone (GH) level by mild exercise is associated with increase in lipolysis in type 2 diabetes (T2D), and that GH stimulates lipolysis in rat visceral adipose tissue. The aim of ...
Pastakia Khushnum - - 2010
Aim. Previous systematic reviews have examined the efficacy of exercise in improving the quality of life for patients with, and survivors of, breast cancer. This review sets out to determine the parameters of exercise programmes used in randomized controlled trials. Methods. A systematic review of randomized controlled trials was conducted. Only trials ...
Tosti Karen P - - 2010
The aim of this study was to compare select aspects of exercise energy metabolism in patients with breast cancer with that of healthy controls across a variety of exercise intensities. Posttreated patients with breast cancer were matched with healthy women based on age, physical fitness level, and menopausal status. Subjects ...
Kim Do Sung do - - 2010
To investigate the differences between the effects of complex decongestive physiotherapy with and without active resistive exercise for the treatment of patients with breast cancer-related lymphedema (BCRL). Randomized control-group study. An outpatient rehabilitation clinic. Patients (N=40) with diagnosed BCRL. Patients were randomly assigned to either the active resistive exercise group ...
Eyigor S - - 2010
There are very few randomized controlled studies on exercise in cancer patients. Consequently, there are no guidelines available with regard to the exercises that can be recommended and difficulties are encountered in the clinical practice as to which exercise is more suitable to the patients. The purpose of this study ...
Chamberland Valérie - - 2010
This article describes a novel approach to study the metabolic regulation of the respiratory system in vertebrates that suits physiology lessons for undergraduate students. It consists of an experimental demonstration of the goldfish's (Carassius auratus) adaptations to anoxia. The goldfish is one of the few vertebrates showing strong enzymatic plasticity ...
Garvican Laura A - - 2010
We sought to determine whether improved cycling performance following 'Live High-Train Low' (LHTL) occurs if increases in haemoglobin mass (Hb(mass)) are prevented via periodic phlebotomy during hypoxic exposure. Eleven, highly trained, female cyclists completed 26 nights of simulated LHTL (16 h day(-1), 3000 m). Hb(mass) was determined in quadruplicate before LHTL and in ...
Ghanbari-Niaki A - - 2011
No studies have examined the time-course changes of the appetite stimulating hormone, agouti-related peptide (AgRP), induced by exercise training. The purpose of the study was to determine the effects of short (3 weeks), moderate (9 weeks), and long-term (12 weeks) treadmill training on plasma and soleus concentrations of AgRP, as ...
Baranowski M - - 2011
Aim:  Liver X receptors (LXRs) are ligand-activated transcription factors that play an important role in regulation of hepatic lipid and carbohydrate metabolism. However, to date there is very few information on the role of LXRs in skeletal muscle. Moreover, it remains obscure whether LXR activation affects physical endurance. Therefore, we ...
Morifuji Masashi - - 2011
Depletion of glycogen stores is associated with fatigue during both sprint and endurance exercises and therefore it is considered important to maintain adequate tissue stores of glycogen during exercise. The aims of the present study in rats were therefore to investigate the effects of preexercise supplementation with carbohydrate and whey ...
van der Graaf Marinette - - 2011
In obesity, insulin-stimulated glucose uptake in skeletal muscle is decreased. We investigated whether the stimulatory effect of acute exercise on glucose uptake and subsequent glycogen synthesis was normal. The study was performed on 18 healthy volunteers, 9 obese (BMI = 32.6 ± 1.2 kg/m(2), mean ± SEM) and 9 lean ...
Kaya Oktay - - 2010
The aim of the present study is to examine how melatonin supplementation affects plasma glucose and liver glycogen levels in rats subjected to acute swimming exercise. Sprague-Dawley species thirty adult male rats were allocated to 3 groups with equal number of animals: general control group which was not subjected to ...
Naperalsky M - - 2010
This study investigated the effects of hot (H) and room temperature (RT) recovery environments on glycogen resynthesis. Nine male participants completed two trials, cycling for 1 h in a temperature-controlled chamber (32.6 degrees C), followed by 4 h of recovery at 32.6 degrees C (H) or 22.2 degrees C (RT). ...
Kaltsatou Antonia - - 2011
The purpose of the present study was to evaluate the influence of a mixed exercise program, including Greek traditional dances and upper body training, in physical function, strength and psychological condition of breast cancer survivors. Twenty-seven women (N = 27), who had been diagnosed and surgically treated for breast cancer, volunteered to ...
Stephens F B - - 2010
The role of pyruvate dehydrogenase complex (PDC) in insulin-stimulated glycogen replenishment the day after exercise, and its molecular control, has not been examined. This study investigated the effect of acute exercise on basal and insulin-stimulated PDC activity (the rate-limiting step in glucose oxidation), glycogen synthesis and the expression of metabolic ...
Waller A P - - 2010
Carbohydrate (CHO) stored in the form of skeletal muscle glycogen is the main energy source for glycolytic and oxidative ATP production during vigorous exercise in mammals. In man, horse and dog both short-term high intensity and prolonged submaximal exercise deplete muscle glycogen. In horses, however, muscle glycogen synthesis is 2-3-fold ...
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