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Results 301 - 350 of 700
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Tsampoukos Antonios A a School of Sport, Exercise and Health Sciences , Loughborough University , Loughborough , - - 2014
Abstract It is currently unknown whether any changes in plasma volume (PV) after sprint running are inherent to sprint running per se or are due to other confounding factors such as changes in posture. The purpose of the present study was to examine the independent effects of sprint running on ...
Sable Meenakshi - - 2012
In the present study pulmonary function tests of two different groups of athletes, swimmers and runners were studied and compared. Thirty swimmers who used to swim a distance of two to three kilometers per day regularly were compared with age, sex, height, and weight matched thirty middle distance runners. Runners ...
Kokkinos Peter - - 2012
A plethora of epidemiologic evidence from large studies supports unequivocally an inverse, independent, and graded association between volume of physical activity, health, and cardiovascular and overall mortality. This association is evident in apparently healthy individuals, patients with hypertension, type 2 diabetes mellitus, and cardiovascular disease, regardless of body weight. Moreover, ...
Mairer Klemens - - 2012
Acute mountain sickness (AMS) is a common condition among non-acclimatized individuals ascending to high altitude. However, the underlying mechanisms causing the symptoms of AMS are still unknown. It has been suggested that AMS is a mild form of high-altitude cerebral edema both sharing a common pathophysiological mechanism. We hypothesized that ...
Yasuda Tomohiro - - 2012
We investigated the acute and chronic effects of low-intensity concentric or eccentric resistance training with blood flow restriction (BFR) on muscle size and strength. Ten young men performed 30% of concentric one repetition maximal dumbbell curl exercise (four sets, total 75 reps) 3 days/week for 6 weeks. One arm was ...
Balducci Stefano - - 2012
While current recommendations on exercise type and volume have strong experimental bases, there is no clear evidence from large-sized studies indicating whether increasing training intensity provides additional benefits to subjects with type 2 diabetes. To compare the effects of moderate-to-high intensity (HI) versus low-to-moderate intensity (LI) training of equal energy ...
Beeh Kai M - - 2012
Exercise limitation, dynamic hyperinflation, and exertional dyspnea are key features of symptomatic chronic obstructive pulmonary disease (COPD). We assessed the effects of glycopyrronium bromide (NVA237), a once-daily, long-acting muscarinic antagonist, on exercise tolerance in patients with moderate to severe COPD. Patients were randomized to a cross-over design of once-daily NVA237 ...
Tudor-Locke Catrine - - 2012
Accumulated evidence supports the promotion of structured exercise for treating prediabetes and preventing Type 2 diabetes. Unfortunately, contemporary societal changes in lifestyle behaviors (occupational, domestic, transportation, and leisure-time) have resulted in a notable widespread deficiency of non-exercise physical activity (e.g., ambulatory activity undertaken outside the context of purposeful exercise) that ...
Gelen Ertugrul E Sakarya University, School of Physical Education and Sport , Sakarya, - - 2012
The purpose of this study was to compare the acute effects of static stretching; dynamic exercises and high volume upper extremity plyometric activity on tennis serve performance. Twenty-six elite young tennis players (15.1 ± 4.2 years, 167.9 ± 5.8 cm and 61.6 ± 8.1 kg) performed 4 different warm-up (WU) ...
Hackett Daniel A DA Discipline of Exercise and Sport Science, University of Sydney , - - 2012
This study investigated the effect of a high-volume compared to a low-volume resistance training session on maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP). Twenty male subjects with resistance training experience (6.2 ± 3.2 y), in a crossover trial, completed two resistance training protocols (high-volume: 5 sets per exercise; ...
Marios Tracy T Faculty of Health Science and Medicine, Bond University , - - 2012
We used tele-monitoring to attempt to improve exercise adherence (number of hours of exercise completed), peak VO2, HbA1c% and quality of life in an unsupervised, home based exercise program in people with type II diabetes, a cost analysis was also conducted. Thirty-nine patients with type II diabetes were randomized to ...
Flanagan Shawn D SD Human Performance Laboratory, Department of Kinesiology, University of Connecticut, Storrs, CT 06269, USA. - - 2012
Cortical activity is thought to reflect the biomechanical properties of movement (e.g., force or velocity of movement), but fatigue and movement familiarity are important factors that require additional consideration in electrophysiological research. The purpose of this within-group quantitative electroencephalogram (EEG) investigation was to examine changes in cortical activity amplitude and ...
Koeken Yvette Y Department of Biomedical Engineering, Maastricht University, Maastricht, The Netherlands. - - 2012
The Fontan palliation was introduced as surgical repair method for tricuspid atresia, creating a univentricular serial circulation. However, it is used as treatment for other life threatening complex congenital heart diseases as well. The variation of underlying pathologies treated with this palliation makes optimization difficult. To assist the optimization process, ...
Drenowatz Clemens - - 2013
Abstract Several studies have examined energy expenditure in various sports but there is a lack of research on the contribution of exercise and habitual activity during different training periods. This study examined changes in total daily energy expenditure (TDEE) and its components during high- and low-volume training periods. Further, changes ...
Delage A - - 2011
In late stage chronic obstructive pulmonary disease, emphysema can worsen respiratory symptoms, not only via the loss of surface for gas exchange, but also via alterations in mechanical properties of the respiratory system (dynamic and static hyperinflation). Emphysematous lung volume reduction aims at improving respiratory mechanics and symptomatology in patients ...
Stitely Michael L - - 2011
Introduction: Postpartum hemorrhage is a common complication of vaginal birth. Few midwives have experience in the performance of procedures to manage hemorrhage that fails to respond to initial management with medications and bimanual compression. Methods: A simulation model was constructed by using a half-pelvis birth simulator and a hollowed out ...
Romagnoli Isabella - - 2011
We hypothesised that chest wall displacement inappropriate to increased ventilation contributes to dyspnoea more than dynamic hyperinflation or dyssynchronous breathing during unsupported arm exercise (UAE) in COPD patients. We used optoelectronic plethysmography to evaluate operational volumes of chest wall compartments, the upper rib cage, lower rib cage and abdomen, at ...
Machado Marco - - 2011
The aim of study was to assess the correlation between the changes in serum CK activity after a resistance exercise and renal function measured by glomerular filtration rate (eGFR). Twenty-nine trained women (32 ± 10 years; 157 ± 4 cm; 58.8 ± 6.4 kg) performed a resistance exercise session with 17 exercises with 3 × 12 repetitions in a circuit training ...
Munih Marko - - 2011
The paper presents the background, main achievements and components of rehabilitation robotics in a simple way, using non-technical terms. The introductory part looks at the development of robotic approaches in the rehabilitation of neurological patients and outlines the principles of robotic device interactions with patients. There follows a section on ...
Poole David C - - 2011
Evolutionary forces drive beneficial adaptations in response to a complex array of environmental conditions. In contrast, over several millennia, humans have been so enamored by the running/athletic prowess of horses and dogs that they have sculpted their anatomy and physiology based solely upon running speed. Thus, through hundreds of generations, ...
Casonatto Juliano - - 2011
Several studies have reported the phenomenon of post-exercise hypotension. However, the factors that cause this drop in blood pressure after a single exercise session are still unknown. To investigate the effects of aerobic exercise on the acute blood pressure response and to investigate the indicators of autonomic activity after exercise. ...
Rassaf Tienush - - 2010
Hemodynamic monitoring in hospitalized patients is crucial since in clinical practice unexpected deterioration of cardiovascular function (e.g. pulmonary embolism resulting in syncope) remains a serious problem and an important cause of death. Standard pulse oximetrie in low acuity settings is nowadays predominately used to monitor peripheral oxygen saturation. Of note, ...
Minns Alicia B - - 2011
The purpose of this study was to prospectively evaluate electrocardiograms (ECGs) before and after running a half marathon to characterize the changes that occur after exertion. Echocardiograms were also done postrace on selected runners. Volunteer runners older than 18 years completed a questionnaire detailing demographic and medical history. Prerace ECGs ...
Jayasuriya Cleonie - - 2011
The Brugada syndrome has been described as a genetic disorder involving aborted sudden cardiac death in patients with apparently structurally normal hearts. Exercise has been shown to unmask the electrocardiographic (ECG) findings in this disease; however, this is yet to be validated as a useful testing method. This is a ...
Sheppard James P - - 2011
Limb electrodes for the 12 lead ECG are routinely placed on the torso during exercise stress testing or when limbs are clinically inaccessible. It is unclear whether such electrode modification produces ECG changes in healthy male or female subjects that are clinically important according to the 2009 AHA, ACCF, HRS ...
Kenttä Tuomas - - 2010
BACKGROUND: QRS/T angle and the cosine of the angle between QRS and T-wave vectors (TCRT), measured from standard 12-lead electrocardiogram (ECG), have been used in risk stratification of patients. This study assessed the possible rate dependence of these variables during exercise ECG in healthy subjects. METHODS: Forty healthy volunteers, 20 ...
Takato Tetsuya - - 2009
A 64-year-old man who had been prescribed antihypertensive drugs since 1971 attended our clinic in 1988 with hypertension and electrocardiographic abnormalities. An electrocardiogram revealed left axis deviation (LAD) in 1988 and slightly prolonged PQ intervals in 1993. Complete left bundle branch block (CLBBB) with LAD developed in May 1995. The ...
Freeman J - - 2009
The exercise electrocardiogram (ECG) is widely considered the best available test for screening asymptomatic adults without known cardiovascular (CV) disease prior to initiating a vigorous exercise programme due to its prognostic value, widespread availability and low cost. Observational studies have demonstrated an increased relative risk of CV events with positive ...
Gorodeski Eiran Z - - 2009
BACKGROUND: Currently, the only function of the resting electrocardiogram (ECG) in patients referred for exercise testing is to determine whether imaging is mandated. It is unknown if subtle ECG findings in those patients with clinically normal resting ECGs have prognostic significance. METHODS: We performed a single-center cohort study of 18,964 ...
Ho Jeffrey D - - 2011
Background: Conducted electrical weapons (CEWs) are used by law enforcement for control of subjects by causing neuromuscular incapacitation. There has been scrutiny of CEWs and their potential role in the occasional sudden death of subjects in custody. There is a hypothesized causal relationship due to induced cardiac dysrhythmia. Previous work ...
Barutcu Irfan - - 2009
Several previous studies suggest that myocardial bridging (MB) is associated with ischemia and rhythm disturbances. We sought to examine exercise-induced changes in P wave duration and dispersion (PWD), the markers of atrial conduction abnormalities in patients with isolated MB of left anterior descending artery (LAD) and control subjects. Eighteen patients ...
Perez Marco V - - 2009
BACKGROUND: The resting 12-lead electrocardiogram (ECG) remains the most commonly used test in evaluating patients with suspected cardiovascular disease. Prognostic values of individual findings on the ECG have been reported but may be of limited use. METHODS: The characteristics of 45,855 ECGs ordered by physician's discretion were first recorded and ...
Holmqvist Fredrik - - 2009
INTRODUCTION: Data on human atrial repolarization are scarce since the QRS complex normally obscures its ECG trace. In the present study, consecutive patients with third-degree AV block were studied to better describe the human Ta wave. METHODS AND RESULTS: Forty patients (mean age 75 years, 17 men) were included. All ...
Senna Gilmar G Universidade Federal do Rio de Janeiro . Physical Education Post-Graduation Program. Rio de Janeiro, Brazil - - 2009
Rest intervals between sets appear to be an important variable that can directly affect training volume and fatigue. The purpose of the present study was to compare the influence of two and five-minute rest intervals on the number of repetitions per set, per exercise and total repetitions in resistance training ...
Miranda Humberto H Institute of Research and Development , Vale do Paraíba University, São José dos Campos, SP, - - 2009
The purpose of the current study was to compare the workout volume (sets x resistance x repetitions per set) completed during two upper body resistance exercise sessions that incorporated 1 minute versus 3 minute rest intervals between sets and exercises. Twelve trained men completed two experimental sessions that consisted of ...
Weng Kaili K Faculty of Engineering, University of Technology, Sydney, Broadway, NSW 2007, Australia. - - 2009
This study investigates the rate estimation problem encountered in rehabilitation exercise monitoring by using noninvasive portable sensors. The purpose of this paper has two main parts. The first part is to find suitable approaches for the rate detection of tri-axial accelerometer (TA) signals and ECG signals respectively. It is found ...
Stengl Milan - - 2008
OBJECTIVE: Sepsis has been defined as the systemic host response to infection with an overwhelming systemic production of both proinflammatory and anti-inflammatory mediators. Continuous hemofiltration has been suggested as possible therapeutic option that may remove the inflammatory mediators. However, hemodialysis and hemofiltration were reported to influence cardiac electrophysiologic parameters and ...
Rimoldi Stefano F - - 2008
Left anterior hemiblock (LAHB) is the most frequent conduction abnormality, but its impact on the diagnostic accuracy of the exercise ECG has not been studied. The aim of our study was to determine the diagnostic accuracy of ST depression for predicting ischaemia in the presence of LAHB. Consecutive patients with ...
Myers Debbie A - - 2008
Electrocardiograms (ECGs) are a good baseline test for assessing cardiac rhythm. ECGs have not been reported in any zebra species and in very few Perissodactyla species. Standard limb, six-lead ECGs were recorded in 23 anesthetized Grevy's zebras (Equus grevyi). Heart rate, RR interval, P-wave duration, RR maximum/minimum, PR interval, QRS ...
Chiang Yi-Ju - - 2008
We demonstrate a two-handed metamaterial (THM), composed of highly symmetric three-layered structures operated at normal incidence. Not only does the THM exhibit two distinct allowed bands with right-handed and left-handed electromagnetic responses, but posses a further advantage of being independent to the polarizations of external excitations. In addition, the THM ...
Ramaswamy Prema - - 2009
OBJECTIVE: To determine the efficacy of electrocardiography (ECG) in detecting left ventricular hypertrophy (LVH) in pediatric hypertension (HT). STUDY DESIGN: Concomitant echocardiograms and electrocardiograms in 108 children with HT were reviewed. Left ventricular mass (LVM), assessed by echocardiography, was used as a basis for a diagnosis of LVH (echo LVH) ...
Koskela Jenni - - 2008
T-wave alternans (TWA) in electrocardiography (ECG) is a marker of cardiac repolarization, the molecular regulation of which is incompletely understood. High TWA and prolonged QT intervals are both associated with ventricular arrhythmias and sudden death. Therefore, we tested the hypothesis of whether the same mutations that influence the QT interval ...
Mirza Muzna - - 2008
BACKGROUND AND OBJECTIVE: Cardiopulmonary resuscitation (CPR) with adequate chest compression depth appears to improve first shock success in cardiac arrest. We evaluate the effect of simplification of chest compression instructions on compression depth in dispatcher-assisted CPR protocol. METHODS: Data from two randomized, double-blinded, controlled trials with identical methodology were combined ...
Ellestad Myrvin H - - 2008
Because of the failure to consider some of the unconventional electrocardiographic signs of ischemia during exercise testing, its sensitivity and specificity are lower than optimum. Two cases are presented to illustrate how precordial peaking of the T waves and lead-strength calculations in patients with low-voltage R waves can be used ...
Severens Els - - 2008
Event-related potentials were used to study whether factors known to influence subject-verb number agreement in production exert analogous effects on sentence comprehension. Participants read Dutch sentences containing subject-verb number agreement errors while their brainwaves were measured. The determiner of the singular head noun could be ambiguous or unambiguous in number ...
Fujiwara Shizuo - - 2008
A new apparatus has been built that annexes a normal electrocardiograph, ECG, with the aim to enhance its capacity. It adds the normal ECG power to superpose multiple records of ECG altogether and averages out them and, further, makes sophisticated analysis, such as normalizing the peak heights, evaluating the half-line ...
Srivathsan Komandoor - - 2008
A 27-year-old male with congenital long QT syndrome, SCN5A mutation experienced recurrent inappropriate exercise-related implantable cardioverter defibrillator (ICD) shocks. This device showed T-wave oversensing with double, which lead to these device discharges. Dynamic T-wave oversensing was reproducibly provoked at exercise treadmill testing and was confirmed as the mechanism leading to ...
Wallbom Agnes S - - 2008
OBJECTIVES: The purpose of the study is to investigate changes in F wave parameters after exercise in subjects with symptomatic lumbar spinal stenosis. DESIGN: A total of 19 older patients with lumbar spinal stenosis and neurogenic claudication participated in this cohort study. No one withdrew for adverse effects. All subjects ...
Haapalahti Petri - - 2008
OBJECTIVES: In LQT1 subtype of inherited long QT syndrome, repolarization abnormalities originating from defective I(Ks) render patients vulnerable to ventricular arrhythmia during sudden sympathetic activation. Experimental studies show lower I(Ks) density and longer action potential duration in left (LV) than in right (RV) ventricle. We studied interventricular dispersion of repolarization ...
Sekhri Neha - - 2008
To determine whether resting and exercise electrocardiograms (ECGs) provide prognostic value that is incremental to that obtained from the clinical history in ambulatory patients with suspected angina attending chest pain clinics. Multicentre cohort study. Rapid access chest pain clinics of six hospitals in England. 8176 consecutive patients with suspected angina ...
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