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Beck Kenneth C - - 2012
Functional values of LogSD of the ventilation distribution (σ(V)) have been reported previously, but functional values of LogSD of the perfusion distribution (σ(q)) and the coefficient of correlation between ventilation and perfusion (ρ) have not been measured in humans. Here, we report values for σ(V), σ(q), and ρ obtained from ...
Nguyen Huong Q HQ Department of Biobehavioral Nursing and Health System, University of Washington, Seattle, WA 98195, USA. - - 2012
The aims of this paper were (1) to describe objectively confirmed physical activity patterns across 3 chronic cardiopulmonary conditions, and (2) to examine the relationship between selected physical activity dimensions with disease severity, self-reported physical and emotional functioning, and exercise performance. Cross-sectional study. Participants' home environment. Patients with cardiopulmonary illnesses: ...
Billat Véronique - - 2012
The study examined the maintenance of VO(2max) using VO(2max) as the controlling variable instead of power. Therefore, ten subjects performed three exhaustive cycling exercise bouts: (1) an incremental test to determine VO(2max) and the minimal power at VO(2max) (PVO(max)), (2) a constant-power test at PVO(max) and (3) a variable-power test ...
Marques-Neto Silvio R - - 2012
ABSTRACT: Marques-Neto, SR, Maior, AS, Maranhão Neto, GA, and Santos, EL. Analysis of heart rate deflection points to predict the anaerobic threshold by a computerized method. J Strength Cond Res 26(7): 1967-1974, 2012-Many studies have used the heart rate deflection points (HRDPs) during incremental exercise tests, because of their strong ...
Varambally Shivarama - - 2012
Schizophrenia is a highly disabling illness. Previous studies have shown yoga to be a feasible add-on therapy in schizophrenia. The current study aimed to test the efficacy of yoga as an add-on treatment in outpatients with schizophrenia. The study done at a tertiary psychiatry center used a single blind randomized ...
Bellar David - - 2012
ABSTRACT: There are many test available to coaches and practioners that seek to identify a point during exercise when excess lactate is being produced or hyperventilation stimulated as a results of metabolic acidosis. The present investigation sought to determine the relationship between performance and the first occurrence of excess CO2 ...
Kipp Kristof - - 2012
ABSTRACT: Identifying loads that maximize mechanical power is important because training at such loads may optimize gains in dynamic athletic performance. The purpose of this study was to examine correlations between measures of external mechanical power output and internal mechanical joint power output across different loads during a weightlifting exercise. ...
Mezzani Alessandro - - 2012
BACKGROUND: Pulmonary VO(2) on-kinetics during light-to-moderate-intensity constant-work-rate exercise, an experimental model mirroring energetic transitions during daily activities, has been shown to speed up with aerobic exercise training (AET) in normal subjects, but scant data are available in chronic heart failure (CHF). METHODS AND RESULTS: Thirty CHF patients were randomized to ...
Saylan Berna - - 2012
OBJECTIVE: The present study aims to study the relationship between tissue Doppler echocardiography (TDE) indices of right ventricle and exercise capacity in patients after total correction for tetralogy of Fallot (ToF). METHODS: This cross-sectional observational study included 20 patients, after undergoing total correction procedure for ToF diagnosed with mild/moderate pulmonary ...
Machado Marco - - 2012
In the current study, we examined the relationship between serum creatine kinase (CK) activity following upper body resistance exercise with a 1- or 3-min rest between sets. Twenty men performed two sessions, each consisting of four sets with a 10-repetition maximum load. The results demonstrated significantly greater volume for the ...
Tsao Te Hung - - 2012
We investigated the effects of different exercise intensities on C-reactive protein (CRP), and whether changes in CRP levels correlated with blood lipid levels. Ten men exercised at 25%, 65%, and 85% of their maximum oxygen consumption rates. Participants' blood was analyzed for CRP and blood lipid levels before and after ...
Bosch Pamela R - - 2012
To determine if 30 minutes of Nintendo Wii Sports boxing provides cardiorespiratory benefits and contributes to the daily exercise recommendations for healthy young adults. Twenty healthy 23- to 27-year-olds participated in two sessions to measure maximum heart rate (HR(max)) via a treadmill test and heart rate (HR) response to 30 ...
Linke Sarah E - - 2012
Interventions using sustained aerobic exercise programs to aid smoking cessation have resulted in modest, short-term cessation rates comparable to conventional cessation methods. No smoking cessation trial to date has prescribed intermittent bouts of exercise in response to nicotine cravings. This pilot randomized controlled trial examined the feasibility and efficacy of ...
Ozaki Hayao - - 2012
We examined the effects of high-intensity resistance training (HIT) and low-intensity blood flow-restricted (LI-BFR) resistance training on carotid arterial compliance. Nineteen young men were randomly divided into HIT (n = 9) or LI-BFR (n = 10) groups. The HIT and LI-BFR groups performed 75 and 30 %, respectively, of one-repetition maximum (1-RM) bench press exercise, ...
Totzeck Matthias - - 2012
Factors improving exercise capacity in highly trained individuals are of major interest. Recent studies suggest that the dietary intake of inorganic nitrate may enhance athletic performance. This has been related to the stepwise in vivo bioactivation of nitrate to nitrite and nitric oxide (NO) with the modulation of mitochondrial function. ...
Reihmane Dace - - 2012
The aim of this study was to test the hypothesis that exercise would induce inflammatory response characterized by increased pro-inflammatory cytokines - interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α), adhesion molecule, matrix metalloprotease-9 (MMP-9) and myeloperoxidase (MPO) levels. Additional aim was to elucidate the possible source of maximal exercise induced ...
Bernasconi Maurizio - - 2012
Background: Preoperative evaluation of lung resection candidates with impaired pulmonary reserves includes measurement of aerobic capacity. Stair climbing is an attractive low-cost alternative to treadmill exercise testing but it lacks standardisation. Objectives: To directly compare stair climbing and treadmill exercise testing with respect to an established cut-off value for lung ...
Kohanpour Mohammad Ali - - 2012
Introduction. Exercise-induced proteinuria is predominantly caused by alterations in renal hemodynamics. The present study was conducted to determine the effect of aerobic exercise in hypoxia on proteinuria and hematuria. Materials and Methods. The study population consisted of 17 physically trained healthy young men. They were asked to attend in 4 ...
Naito Yoko - - 2012
Management of asymptomatic congenital pulmonary airway malformations remains controversial when addressing the optimal timing of surgical resection. Neonatal resection is advocated by some based on the theory that earlier lobectomy results in greater compensatory lung growth. We examined whether age at lobectomy is correlated with better pulmonary outcomes as reflected ...
Gomes Paulo Sergio Chagas - - 2012
A hypoxic model was used to investigate changes in localized cerebral and muscle haemodynamics during knee extension (KE) in healthy individuals. Thirty-one young healthy volunteers performed one set of KE until failure under hypoxia (14 % O(2)) or normoxia (21 % O(2)) at 50, 75 or 100 % of 1 repetition maximum, in ...
Huff Christopher M - - 2012
BACKGROUND: Dyspnea and the resulting functional impairment are a common complication in hypertrophic cardiomyopathy (HCM). The relationship between physician-perceived functional status, patient-perceived health status, and objective exercise test results has not been evaluated in this condition. PURPOSE: To evaluate the correlation between the Kansas City Cardiomyopathy Questionnaire (KCCQ) and (1) ...
Jakovljevic Djordje G DG Institute for Ageing and Health, Newcastle University, Newcastle upon Tyne, UK. - - 2012
Cardiac power output (CPO) is a unique and direct measure of overall cardiac function (i.e. cardiac pumping capability) that integrates both flow- and pressure-generating capacities of the heart. The present study assessed the relationship between peak exercise CPO and selected indices of cardio-respiratory fitness. Thirty-seven healthy adults (23 men and ...
Bourlai Thirimachos - - 2012
Abstract Background. Monitoring core body temperature to identify heat stress in first responders and in individuals participating in mass gatherings (e.g., marathons) is difficult. Objective. This study utilized high-sensitivity thermal imaging technology to predict the core temperature of human subjects at a distance while performing simulated field operations wearing thermal ...
Ohmura Hajime - - 2012
Objective-To determine the influence of transportation by road and air on heart rate (HR) and HR variability (HRV) in horses. Animals-6 healthy horses. Procedures-ECG recordings were obtained from horses before (quarantine with stall rest [Q]; 24 hours) and during a journey that included transportation by road (RT; 4.5 hours), waiting ...
Ualí Ismael - - 2012
ABSTRACT: Ualí, I, Herrero, AJ, Garatachea, N, Marín, PJ, Alvear-Ordenes, I, and García-López, D. Maximal strength on different resistance training rowing exercises predicts start phase performance in elite kayakers. J Strength Cond Res 26(4): 941-946, 2012-This study aimed to examine the relationship existing between maximum strength values in 2 common ...
Messias Leandro Rocha - - 2012
BACKGROUND: Heart Rate Recovery (HRR) reflects the capacity of the cardiovascular system to reverse the vagal withdrawal caused by exercise. Scintigraphy with metaiodobenzylguanidine (I¹23 MIBG) evaluates innervation and cardiac adrenergic activation. The association of these two methods is not well established. OBJECTIVE: To evaluate the association between HRR and washout ...
Pettitt R W - - 2012
A 3-min all-out exercise test (3 MT) estimates critical power and the curvature constant for cycle ergometry validly; however, the mode of running has not been studied. We examined the efficacy of a running 3 MT, using global positioning sensor data, to predict outdoor racing performance. Women distance runners (n=14) ...
Tabira Kazuyuki - - 2012
BACKGROUND: Muscle oxygenation correlates with systemic oxygen uptake (VO₂) in normal subjects; however, whether this relationship exists chronic obstructive pulmonary disease (COPD) patients remains unclear. The purpose of this study was to investigate the influence of skeletal muscle oxygenation on VO₂ during exercise in patients with COPD. METHODS: Eight patients ...
Skiba Philip F - - 2012
PURPOSE:: The Critical Power (CP) model includes two constants, the CP and the W': P = W' / t + CP. The W' is the finite work capacity available above CP. Power output above CP results in depletion of the W'; complete depletion of the W' results in exercise intolerance. ...
Frigiola Alessandra - - 2012
AIMS: We aimed to assess the impact of surgical pulmonary valve replacement (PVR) for severe pulmonary regurgitation (PR) on biventricular function and its effect on exercise capacity. METHODS AND RESULTS: Seventy-three patients (mean age 23.6 ± 11.5 years, 47 females) underwent surgical PVR for PR. Echocardiogram and magnetic resonance imaging ...
Takaya Yoichi - - 2012
Impaired exercise capacity has been found in patients with diastolic dysfunction with preserved systolic function. Although conventional transthoracic echocardiography (TTE) provides useful clinical information about systolic and diastolic cardiac function, its capability to evaluate exercise capacity has been controversial. The inertia force of late systolic aortic flow is known to ...
Mahut Bruno - - 2012
Abstract Dyspnea is deemed to result from an imbalance between ventilatory demand and capacity. The single-breath diffusing capacity for carbon monoxide (DLCO) is often the best correlate to dyspnea in COPD. We hypothesized that DLCO contributes to the assessment of ventilatory demand, which is linked to physiological dead space /tidal ...
Maciejewski H - - 2012
The aim of this study was to test (a) three methods to estimate the quantity of lactate accumulated (Q(LaA) ) in response to supramaximal exercise and (b) correlations between Q(LaA) and the nonoxidative energy supply assessed by the accumulated oxygen deficit (AOD). Nine rowers performed a 3-min all-out test on ...
Boss Andreas - - 2012
Carnitine (Car) buffers excess acetyl-CoA through the formation of acetylCar (AcCar). AcCar's acetyl group (AG-AcCar) gives rise to a peak at 2.13 ppm in (1) H MR spectra of skeletal muscle, whereas the trimethylammonium (TMA) groups of both, AcCar and Car, are thought to contribute to the TMA peak at ...
Vermathen Peter - - 2012
Aim of the study was to determine distribution and depletion patterns of intramyocellular lipids (IMCL) in leg muscles before and after two types of standardized endurance exercise. (1) H-magnetic resonance spectroscopic imaging was performed (1) in the thigh of eight-trained cyclists after exercising on an ergometer for 3 h at ...
Martín-Albo José - - 2012
Abstract In this study, we examined the relationships between intrinsic motivation, physical self-concept, and satisfaction with life using cross-lagged panel models analysed via structural equation models. The sample consisted of 293 participants (148 men, 145 women) aged 18-70 years who performed diverse types of physical exercise. Three alternative models were ...
Hackney Anthony C - - 2012
To compare the thyroid hormonal responses to high-intensity interval exercise (IE) and steady-state endurance exercise (SEE) in highly trained males (n=15). The IE session consisted of repeated periods of 90-seconds treadmill running at 100-110% VO ₂max and 90-seconds active recovery at 40% VO₂max for 42-47 minutes. The SEE session was ...
Hankir Ahmed Khaldoon - - 2012
In the early 19th century, Lombroso introduced the concept of hereditary taint to describe the coexistence of 'madness' and creativity. In a recent investigation, Rust et al reported a study designed to test the traditionally assumed relationship between creativity and schizophrenia. They uncovered an association between creative originality and the ...
Tékus Eva - - 2012
Several studies have described high correlation of salivary and blood lactate level during exercise. Measuring the effectiveness and intensity of training, lactate concentration in blood, and lately in saliva are used.The aim of our study was to evaluate the correlation between the concentration and timing of salivary and blood lactate ...
Lucht Martina - - 2012
This paper examines benefits of the exer-learning concept HOPSCOTCH for rehabilitation in spa clinics and at home. It describes a specific application to motivate obese patients in spa clinics for exercise. Furthermore results of an empirical study are reported where HOPSCOTCH was implemented in two spa clinics for a period ...
Benton Melissa J - - 2012
Twenty-three women completed a resistance training program three or four days per week. At baseline and after eight weeks they completed the Vitality Plus Scale measuring exercise-related changes in quality of life. Greater scores indicated better quality of life. Significant improvements in quality of life (p < .001), upper body ...
Billat Véronique L - - 2012
Despite the increasing popularity of marathon running, there are no data on the responses of stroke volume (SV) and cardiac output (CO) to exercise in this context. We sought to establish whether marathon performance is associated with the ability to sustain high fractional use of maximal SV and CO (i.e, ...
Ruf Katharina C - - 2012
The objective of this study was to validate physical activity questionnaires for cystic fibrosis (CF) against accelerometry and cycle ergometry. 41 patients with CF (12-42 years) completed the Habitual Activity Estimation Scale (HAES), the 7-Day Physical Activity Recall questionnaire (7D-PAR) and the Lipid Research Clinics questionnaire (LRC) and performed an ...
Furness Trentham - - 2012
Chronic obstructive pulmonary disease (COPD) is a respiratory condition characterised by dyspnoea, excessive sputum production, chronic cough, bronchitis and emphysema. Functionally, exercise tolerance is poor for people with COPD and is linked to difficulty in performing daily tasks. More specifically, exercise difficulties are due partly to dyspnoea and lower limb ...
Snoer Martin - - 2012
Insulin resistance has been linked to exercise intolerance in heart failure patients. The aim of this study was to assess the potential role of coronary flow reserve (CFR), endothelial function and arterial stiffness in explaining this linkage. 39 patients with LVEF < 35% (median LV ejection fraction (LVEF) 31 (interquartile ...
Cordoni Priscila Kessar - - 2012
To characterize the presence, extent, and patterns of dynamic hyperinflation (DH) during treadmill exercise testing in patients with moderate to severe COPD. This was a cross-sectional study involving 30 non-hypoxemic patients (FEV1= 43 ± 14% of predicted) who were submitted to a cardiopulmonary exercise test on a treadmill at a ...
Smits Jasper A J - - 2012
Although cigarette smoking is a leading cause of death and disability in the United States (US), over 40 million adults in the US currently smoke. Quitting smoking is particularly difficult for smokers with certain types of psychological vulnerability. Researchers have frequently called attention to the relation between smoking and anxiety-related ...
Williamson Wilby W Medical Research Council Epidemiology Unit, Institute of Metabolic Science, Box 285, Addenbrooke's Hospital, Cambridge CB2 0QQ, - - 2012
Background. Oxygen uptake efficiency slope (OUES) is a reproducible, objective marker of cardiopulmonary function. OUES is reported as being relatively independent of exercise intensity. Practical guidance and criteria for reporting OUES from submaximal tests has not been established. Objective. Evaluate the use of respiratory exchange ratio (RER) as a secondary ...
Leprêtre Pierre-Marie - - 2012
To investigate the effects of fatigue and metabolite accumulation on the postexercicse parasympathetic reactivation, 11 long-sprint runners performed on an outdoor track an exhaustive 400 m long sprint event and a 300 m with the same 400 m pacing strategy. Time constant of heart rate recovery (HRRτ), time (RMSSD), and frequency (HF, and ...
Molina Renato - - 2012
This study investigated the association between Isokinetic peak torque (PT) of quadriceps and the corresponding peak rate of force development (peak RFD) during the recovery of eccentric exercise. Twelve untrained men (aged 21·7 ± 2·3 year) performed 100 maximal eccentric contractions for knee extensors (10 sets of 10 repetitions with a 2-min rest ...
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