Search Results
Results 551 - 600 of 1494
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Scofield Dennis Edward - - 2011
This study tested the hypothesis that transdermal fluid (TDF) is more sensitive than serum to exercise-induced increases in insulin-like growth factor-I (IGF-I) concentration, and that these increases would be evident proximal, but not distal, to the exercising muscle. A novel, non-invasive methodology was used to collect TDF for analysis. TDF ...
Bunn Elizabeth A - - 2011
Individuals with low back pain (LBP) have been shown to demonstrate decreased quadriceps activation following lumbar paraspinal fatigue. The response of other lower extremity muscles is unknown. The purpose of this study was to determine changes in motoneuron pool excitability of the vastus medialis, fibularis longus, and soleus following lumbar ...
Yasuda Tomohiro - - 2011
We investigated the combined effect of low-intensity blood flow restriction and high-intensity resistance training on muscle adaptation. Forty young men (aged 22-32 years) were randomly divided into four groups of ten subjects each: high-intensity resistance training (HI-RT, 75% of one repetition maximum [1-RM]), low-intensity resistance training with blood flow restriction (LI-BFR, ...
Wheatley K - - 2011
Hypobaric hypoxia is associated with an increase in erythropoesis and an increased thrombotic risk. This is true of long haul air travel, mountaineering expeditions and longer stays at altitude. Studies looking at clotting on mountaineering expeditions are further complicated by the effects of exercise, plasma volume changes and the catecholamine ...
Parker Beth - - 2011
Air travel and exercise change hemostatic parameters. This study investigated the effect of air travel on exercise-induced coagulation and fibrinolysis in endurance athletes. A prospective longitudinal study. The 114th Boston Marathon (April 19, 2010). Forty-one adults were divided into travel (T: 23 participants, living >4-hour plane flight from Boston) and ...
Hill-Haas Stephen V - - 2011
Small-sided games (SSGs) are played on reduced pitch areas, often using modified rules and involving a smaller number of players than traditional football. These games are less structured than traditional fitness training methods but are very popular training drills for players of all ages and levels. At present, there is ...
Kluding Patricia M - - 2011
Emerging evidence suggests that exercise may improve cognitive function in older adults. The purpose of this pilot study was to describe changes in measures of cognition and executive function in individuals with chronic stroke following participation in aerobic and strengthening exercise. A single-group, pretest-posttest design was used. Nine individuals with ...
Silva Bruno M - - 2011
PURPOSE:: There is large inter-individual variation in the parasympathetic adaptation induced by aerobic exercise training, which may be partially attributed to genetic polymorphisms. Therefore, we investigated the associationamong three polymorphisms in the endothelial nitric oxide (eNOS) gene (-786T>C, 4b4a and 894G>T), analyzed individually and as haplotypes, and the parasympathetic adaptation ...
ZieliƄski Jacek - - 2011
There are no studies analyzing the effect of training loads on purine metabolism during long training periods. PURPOSE:: To evaluate the effect of training load changes and subsequent detraining on purine metabolism in middle-distance runners during a 1-year cycle. METHODS:: In four characteristic points of the training cycle, loads assigned ...
Kopp Renate - - 2011
Exercise as well as hypoxia cause an increase in angiogenesis, changes in mitochondrial density and alterations in metabolism, but it is still under debate whether the hypoxia inducible factor (HIF) is active during both situations. In this study gene expression analysis of zebrafish larvae which were raised under normoxic, hypoxic ...
Morio Cédric - - 2011
This study analysed the time course of neuro-mechanical changes underlying stretch-shortening cycle during intermittent exhaustive rebound exercise. On a sledge apparatus, ten subjects repeated until exhaustion a series of 30 unilateral submaximal rebounds, with intermediate 3-min rest periods. Rebound height, ground reaction force, 3D tibial acceleration and electromyographic activity of ...
Muthalib Makii - - 2011
This study investigated biceps brachii oxygenation and myoelectrical activity during and following maximal eccentric exercise to better understand the repeated-bout effect. Ten men performed two bouts of eccentric exercise (ECC1, ECC2), consisting of 10 sets of 6 maximal lengthening contractions of the elbow flexors separated by 4 wk. Tissue oxygenation ...
Rasmussen Martin Krøyer - - 2011
It is investigated if exercise induced mRNA changes cause similar protein expression changes of Na(+), K(+) pump isoforms (α1, α2, β1, β2), FXYD1 and NHE1 in rat skeletal muscle. Expression was evaluated (n=8 per group) in Soleus and EDL after 1 day, 3 days and 3 weeks (5 sessions per ...
Rønnestad Bent R - - 2011
The purpose of this study was to determine the influence of transiently elevated endogenous hormone concentrations during exercise on strength training adaptations. Nine subjects performed four unilateral strength training session per week on the elbow flexors for 11 weeks. During two of the weekly sessions, leg exercises were performed to ...
Reding Kerryn W - - 2011
Many studies have investigated the immediate impact of physical activity on prolactin concentrations; however, it is currently unclear what impact exercise may have on prolactin concentrations in the long-term, particularly among women. Understanding the role of exercise on prolactin is important because epidemiologic studies have reported increased risks of breast ...
Klonizakis Markos - - 2011
Objectives Microvascular integrity is compromised by several diseases and conditions as well as age. Exercise can reverse these effects but it is unclear whether these are systemic or localised, or which mechanisms are responsible for observed improvements Therefore, the primary objective of this study was to assess whether arm-cranking exercise ...
Conner Mark - - 2011
Two studies investigated the impact of affective and cognitive messages compared to a no-message control on self-reported exercise. Students (Study 1, N = 383 and Study 2, N = 197) were randomly allocated to one of the three conditions (control - no message, affective message or cognitive message). Participants completed ...
Van Hecke Ann - - 2011
Examining the (experienced) changes associated with a nursing intervention to enhance adherence to leg ulcer lifestyle advice. Few interventions to enhance adherence to leg ulcer treatment are developed and tested. Qualitative evaluation approach and pre-post-test design were used. Twenty-six patients with venous ulcers in a community care setting participated. Data ...
Stickford Jonathon L - - 2011
Conjugated linoleic acid (CLA) has been reported to modify the inflammatory response associated with allergic airway disease, primarily in animal models. To extend these observations to humans, the effect of short-term CLA supplementation on the severity of exercise-induced bronchoconstriction (EIB) was investigated in asthmatics. Six subjects with physician-diagnosed asthma and ...
Kerr Abigail L - - 2011
Long-term aerobic exercise improves cognition in both human and nonhuman animals and induces plastic changes in the central nervous system (CNS), including neurogenesis and angiogenesis. However, the early and immediate effects of exercise on the CNS have not been adequately explored. There is some evidence to suggest that exercise is ...
Skurvydas Albertas - - 2011
Skurvydas, A, Brazaitis, M, and Kamandulis, S. Muscle-damaging exercise affects isokinetic torque more at short muscle length. J Strength Cond Res 25(X): 000-000, 2011-The aim of this study was to investigate the differences in the length-dependent changes in quadriceps muscle torque during voluntary isometric and isokinetic contractions performed after severe ...
Djordjevic Dusica - - 2011
Although exercise-induced oxidative stress receives considerable scientific attention, there is still little information available regarding exercise-induced adaptations of the antioxidant defence system in adolescent and child athletes. The aim of our study was to establish the effects of long-term exercise training on the redox state of adolescents, and to find ...
Weston Matthew - - 2011
The aim of the present study was to examine the relationship between intensities of exercise during match-play of elite-standard soccer referees with those of the players from the same match. Match analysis data were collected (Prozone® Leeds, UK) for 18 elite-standard soccer referees (age 26-49 years) on FA Premier League ...
Roessler Kirsten Kaya - - 2011
The objective of the present study was to examine psychological aspects of intra- and interpersonal learning for patients with Type 2 diabetes, hypertension and dyslipidemia treated with Exercise on prescription. The research design consists of a qualitative investigation of 30 patients in Denmark undergoing a community-based exercise treatment at baseline, ...
Gardner Andrew W - - 2011
This prospective, randomized, controlled clinical trial compared changes in exercise performance and daily ambulatory activity in peripheral artery disease patients with intermittent claudication after a home-based exercise program, a supervised exercise program, and usual-care control. Of the 119 patients randomized, 29 completed home-based exercise, 33 completed supervised exercise, and 30 ...
Dartnall Tamara Jade - - 2011
The purpose of this study was to examine changes in motor unit activity in the biceps brachii muscle after an initial (Bout 1) and repeated (Bout 2) session of eccentric exercise separated by 1 week. Eight subjects (age, 22 ± 2 yrs) participated in experimental assessments of neuromuscular function obtained ...
Nedvidkova Jara - - 2011
OBJECTIVE: Ghrelin is predominantly produced by the stomach and the growth hormone (GH)-ghrelin feedback loop between the stomach and the pituitary gland has recently been suggested. The disruption of the gut-brain axis might be involved in bulimia nervosa (BN). METHODS: We investigated responses of plasma GH, ghrelin, and neuropeptide Y ...
Martin Jeffrey S - - 2011
BackgroundIncreased elastic conduit artery stiffness with aging is associated with early wave reflection and increased wasted left ventricular pressure energy (LVE(W)). The effects of aging on central hemodynamics during exercise have not been well characterized. This study sought to investigate changes in central hemodynamics during cycle exercise in young, middle-aged, ...
Fortes Matthew B - - 2011
It has been suggested that tear fluid is isotonic with plasma, and plasma osmolality (Posm) is an accepted, albeit invasive, hydration marker. Our aim was to determine if tear fluid osmolarity (Tosm) assessed using a new, portable, non-invasive, rapid collection and measurement device tracks hydration. PURPOSE:: To compare changes in ...
Gothe Neha P - - 2011
This 12-month, 2 arm, single blind randomized controlled exercise trial examined relationships among changes in multidimensional self-esteem as a function of intervention mode (i.e., walking vs. flexibility-toning-balance). Data were collected on three equidistant occasions (baseline, 6 and 12 months). One-hundred seventy-nine older adults (M(age) = 66.38) began the study and ...
Yunoki Takahiro - - 2011
In order to test our hypothesis that muscle condition has an effect on the cognition of self-motion and consequently on the ventilatory response during exercise, six healthy subjects performed a moderate incremental exercise test (IET) on a cycle ergometer under two conditions [resistance exercise condition (REC) and control condition (CC)]. ...
Fall Lewis - - 2011
Objective Patients with arterial occlusive disease are typically hypoxaemic, and exercise is prescribed for rehabilitation. Both stressors independently contract plasma volume (PV), which may influence clinical interpretation of a patient's thrombogenicity. The aim of the study was to emphasise the conceptual significance of PV correction. Methods and Results Venous plasma ...
Schlader Zachary J - - 2011
This study examined the role of skin temperature on self-selected exercise intensity (i.e., power output). Eight well-trained, male cyclists completed two 60 min self-paced cycling bouts during which they completed as much work as possible. Using a liquid-perfused suit, skin temperature (T (Sk)) was changed during the two trials such that ...
Annesi James J - - 2011
Background: The relationship of exercise to weight loss, beyond minimal caloric expenditures possible in obese and deconditioned individuals, requires clarification.Objective: We assessed whether changes in theory-based psychological variables associated with participation in an exercise treatment extended to psychologically based predictors of controlled eating and weight and waist-circumference reductions.Methods: A group ...
Golbidi Saeid - - 2011
Physical inactivity is increasingly recognized as modifiable behavioral risk factor for cardiovascular diseases. A partial list of proposed mechanisms for exercise-induced cardioprotection include induction of heat shock proteins, increase in cardiac antioxidant capacity, expression of endoplasmic reticulum stress proteins, anatomical and physiological changes in the coronary arteries, changes in nitric ...
Navratil Marta - - 2011
We report a case of a 17-year-old female adolescent who experienced an episode of exercise-induced anaphylactic reaction following ingestion of tuna sandwich (from soy containing canned tuna). Her medical history revealed that she had previously had one episode of urticaria after ingestion of sulfamethoxazole with trimethoprim and anaphylactic reaction after ...
Fetherman Debra L - - 2011
A Transtheoretical Model (TTM) goal-setting tool was used during strength training in women. Volunteers (mean age = 69, N = 27) were assigned to a strength training only or strength training/behavior change 12-week intervention. A pre/posttest, quasiexperimental design assessed TTM constructs, Health-Related Quality of Life, and functional fitness measurements. Multiple ...
El-Sayed Mahmoud S - - 2011
The aim of the present study was ascertain the effects posture and exercise modality on the main determinants of blood rheology. Thirteen subjects performed two exercise trials, in random order, at approximately 70% VO(2) max for 45-min. One trial was performed on a motorized treadmill at an intensity corresponding to ...
Henagan Tara M - - 2011
The purpose of this study was to determine whether resistance exercise training-induced reductions in inflammation are mediated via melanocortin 3 receptor expression in obese (BMI 32.7 ± 3.7) women (65.6 ± 2.8 yrs) randomized to either a control (N = 11) or resistance training group (N = 12). The resistance trained ...
Lee Jin - - 2011
Purpose: Hyperthermia-induced apoptosis is mediated by mitochondrial pathway, and is temporally correlated with alterations in mitochondrial morphology in neuroepithelial cells. In addition, regular exercise up-regulates heat shock proteins (HSPs) that inhibit apoptosis. However, embryo-protective effects of maternal exercise against heat exposure during pregnancy have not been fully understood yet. Materials ...
Brauer Jeremy A - - 2011
A 58-year-old man presented for evaluation and treatment of non-tender, non-pruritic, annular patches on the right temple and frontal aspect of the scalp that reddened with exercise. A biopsy specimen showed a purpuric dermatitis with features of lymphocytic vasculitis; a diagnosis of exercise-induced progressive pigmentary purpura was made. Whereas progressive ...
Dalbo Vincent J - - 2011
This study examined mRNA expression patterns for atrogin-1 and muscle ring finger-1 (MuRF-1) before and 24 hours after a resistance training bout. Furthermore, basal, 5-minute and 24-hour postexercise serum concentrations of cortisol and insulin like growth factor-1 (IGF-1) and the relationships between these hormones and the genetic expression patterns of ...
Minov Jordan - - 2011
In order to assess prevalence and characteristics of exercise-induced respiratory symptoms (EIRSs) and exercise-induced bronchoconstriction (EIB) in health care workers, we performed a cross-sectional study including 48 female nurses from primary care settings and an equal number of female office workers studied as a control group. The evaluation of examined ...
Smart Neil A - - 2011
Background. We pooled data from four studies, to establish whether exercise training programs were able to modulate systemic cytokine levels of tumour necrosis factor-alpha (TNF-alpha) and interleukin-6 (IL-6). A second aim was to establish if differences in ExT regimens are related to degree of change in cytokines and peak VO(2). ...
Hotta Norio - - 2011
We investigated whether intense interval training on a cycle ergometer would prevent loss of muscle strength and atrophy in the human calf during unilateral lower limb suspension (ULLS). The present study involved 11 healthy men. We defined unloading leg and contralateral leg as ULLS-leg and CONT-leg, respectively. The subjects were ...
Hadley David M - - 2011
Background: Cardiac repolarization adaptation to cycle length change is patient dependent and results in complex QT-RR hysteresis. We hypothesize that accurate patient-specific QT-RR curves and rate corrected QT values (QTc) can be derived through patient-specific modeling of hysteresis. Method and Results: Model development was supported by QT-RR observations from 1959 ...
Enea Carina - - 2011
Physical exercise is known to strongly stimulate the endocrine system in both sexes. Among these hormones, androgens (e.g. testosterone, androstenedione, dehydroepiandrosterone) play key roles in the reproductive system, muscle growth and the prevention of bone loss. In female athletes, excessive physical exercise may lead to disorders, including delay in the ...
Dadkhah Shahriar - - 2011
Diagnostic stress echo testing is commonly performed in patients with known or suspected cardiovascular disease. There has been considerable debate in management of exercise induced non-sustained ventricular tachycardia (NSVT). In this case report, we present our experience with a case of exercise induced NSVT, and subsequent angiographically significant left anterior ...
Hausswirth Christophe - - 2011
Enhanced recovery following physical activity and exercise-induced muscle damage (EIMD) has become a priority for athletes. Consequently, a number of post-exercise recovery strategies are used, often without scientific evidence of their benefits. Within this framework, the purpose of this study was to test the efficacy of whole body cryotherapy (WBC), ...
de Koning Jos J - - 2011
Athletic competition has been a source of interest to the scientific community for many years, as a surrogate of the limits of human ambulatory ability. One of the remarkable things about athletic competition is the observation that some athletes suddenly reduce their pace in the mid-portion of the race and ...
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