Search Results
Results 601 - 650 of 1610
< 8 9 10 11 12 13 14 15 16 17 18 >
Holm Paige - - 2004
BACKGROUND: Whether or not isolated endurance training of the respiratory muscles improves whole-body endurance exercise performance is controversial, with some studies reporting enhancements of 50% or more, and others reporting no change. Twenty fit (VO2 max 56.0 ml/kg/min), experienced cyclists were randomly assigned to three groups. The experimental group (n ...
Roa Dante E - - 2004
Measurements were performed on the 30, 40, and 60 mm 90Sr/Y beta-emitter source trains used in the Novoste Beta-Cath system to determine their dosimetric characteristics at submillimeter distances and provide the necessary TG-60 parameters for mapping their dose distributions. These measurements were carried out in a Solid Water phantom where ...
Kraemer William J - - 2004
Progression in resistance training is a dynamic process that requires an exercise prescription process, evaluation of training progress, and careful development of target goals. The process starts with the determination of individual needs and training goals. This involves decisions regarding questions as to what muscles must be trained, injury prevention ...
Castaneda Carmen - - 2004
BACKGROUND: Systemic inflammation and protein-energy malnutrition may be associated with poor outcomes in kidney disease. METHODS: We studied 26 adults (age, 65 +/- 10 [SD] years) with chronic kidney disease, not on dialysis therapy. Subjects were randomly assigned to resistance training (n = 14) or a control group (n = ...
Richterova B - - 2004
The effect of a 12-wk training program on sc abdominal adipose tissue (SCAAT) was studied in 11 obese women. Before and after the training, biopsies of SCAAT were performed for mRNA levels determination. Using the microdialysis method, involvement of alpha(2)- and beta-adrenergic receptor (ARs) in the control of lipolysis in ...
Pierson Lee M - - 2004
PURPOSE: This study was conducted to identify predictors of training effect after 6 months of supervised exercise for cardiac rehabilitation patients. METHODS: Data at baseline and after 6 months of supervised exercise from 60 patients with coronary artery disease were used for this study. All the patients exercised 3 days ...
Gething A D - - 2004
This study investigated the relationship between the intensity of an inspiratory muscle training programme and its effect on respiratory muscle strength, exercising heart rate, and ratings of perceived exertion. A total of 66 subjects were randomly assigned to one of three groups. One group trained at 100% of maximum inspiratory ...
Stokes Keith A - - 2004
This study examined the effect of 6 weeks of prescribed sprint training on the human growth hormone (hGH) response to cycle ergometer sprinting. Sixteen male subjects were randomly assigned to a training (n=8) or a control (n=8) group. Each subject completed two main trials, consisting of two all-out 30-s cycle-ergometer ...
Nesser Tom W - - 2004
With the advent of the ski-skating technique, upper body power has increasingly been shown to be a major factor in cross-country skiing success. The purpose of this study was to evaluate 4 commonly used training methods (weight, circuit, rollerboard, and ski-specific training) for the development of upper body power (UBP) ...
Robinson Leah E - - 2004
The purpose of this study was to compare changes in performance indicators (power, torque, and velocity) and muscle soreness between plyometric training on land and in water. Thirty-two college age women were randomly assigned to 8 weeks of an identical plyometric training program on land or in an aquatic setting. ...
Hu Y - - 2004
To gain more information on the effects of training types on testosterone secretion, the present study investigated the relationship between serum testosterone (ST) and the activities of oxydoreductive enzymes in Leydig cells to continuous and intermittent training regimes. Male rats swam with a load of 3.5 % body weight for ...
Atlaoui Djamila - - 2004
PURPOSE: The effect of training variations on 24-h urinary cortisol/cortisone (C/Cn) ratio was investigated in highly trained swimmers to determine whether it could be a good marker of training stress and performance. METHODS: Fourteen swimmers (five female and nine male) were tested after 4 wk of intense training (IT), 3 ...
Creer A R - - 2004
The purpose of this study was to investigate the effects of short-term, high-intensity sprint training on the root mean squared (RMS) and median frequency (MF) derived from surface electromyography (EMG), as well as peak power, mean power, total work, and plasma lactate levels in trained cyclists when performed concurrently with ...
De Angelis K - - 2004
Experiments were performed to investigate the influence of exercise training on cardiovascular function in mice. Heart rate, arterial pressure, baroreflex sensitivity, and autonomic control of heart rate were measured in conscious, unrestrained male C57/6J sedentary (n = 8) and trained mice (n = 8). The exercise training protocol used a ...
Hwang, Hyosook
It was the purpose of this study to investigate effects of exercise training on post-ischemia/reperfusion (I/R) contractile function. I/R induced significant contractile dysfunction in hearts from sedentary control animals; left ventricular developed pressure (LVDP) and maximal rate of pressure development and relaxation (±dP/dt) decreased, while end-diastolic pressure (EDP) increased. However, ...
LeMaitre John P - - 2004
BACKGROUND: A proinflammatory state is recognized in chronic heart failure and the degree of immune activation corresponds to disease severity and prognosis. Training is known to improve symptoms in heart failure but less is known about the effects of specific forms of training on the proinflammatory state. METHODS: Forty-six patients ...
Spriet Lawrence L - - 2004
This article highlights new nutritional concerns or practices that may influence the adaptation to training. The discussion is based on the assumption that the adaptation to repeated bouts of training occurs during recovery periods and that if one can train harder, the adaptation will be greater. The goal is to ...
Kim Chan-Hoi - - 2004
Aerobic training can be defined as any physical exercise that increases the heart rate and enhances the body's intake of oxygen long enough to benefit the condition of the body. Running, cycling, and swimming are examples of aerobic activities. In recent years, the importance of sports in everyday life has ...
Ilarraza Hermes - - 2004
BACKGROUND: The efficacy of exercise training for patients with cardiovascular disease is well established. Given recent changes in reimbursement patterns for cardiac rehabilitation and therefore a greater need for self-monitoring, home programs, and the like, a need exists to determine the capability of patients to regulate their own exercise intensity ...
Mucci P - - 2004
The aim of this study was to investigate the development of exercise-induced hypoxemia (EIH defined as an exercise decrease > 4 % in oxygen arterial saturation, i. e. SaO (2) measured with a portable pulse oximeter) in twelve sportsmen and ten sportswomen (18.5 +/- 0.5 years) who were non-elite and ...
Evangelista F S - - 2003
Exercise training associated with robust conditioning can be useful for the study of molecular mechanisms underlying exercise-induced cardiac hypertrophy. A swimming apparatus is described to control training regimens in terms of duration, load, and frequency of exercise. Mice were submitted to 60- vs 90-min session/day, once vs twice a day, ...
Herrmann Markus - - 2003
BACKGROUND: Since homocysteine (Hcy) is a risk factor for cardiovascular and other diseases, it is important to know how exercise can modify it. Previous studies have suggested that endurance training influences Hcy. However, little is known about the effect of training intensity on Hcy. MATERIALS AND METHODS: We investigated Hcy, ...
de Glisezinski I - - 2003
The aim of this study was to investigate whether endurance training improves lipid mobilization and oxidation in overweight subjects. Eleven young men (25.6 +/- 1.4 yr and body mass index 27.7 +/- 0.2) performed a 4-mo training program consisting of practicing aerobic exercise 5 days/wk. Before and after the training ...
Liu Yuefei - - 2004
Heat shock protein, e.g. HSP70, can be induced in human skeletal muscle undergoing exercise training, and plays important role in adaptation to stress. This study was designed to investigate the effects of high-intensity strength training and low-intensity endurance training on the HSP70 response to exercise, bearing in mind whether HSP70 ...
Eto D - - 2003
REASONS FOR PERFORMING STUDY: Most racehorses are trained regularly from about age 18 months; therefore, little information is available on the effect of training in Thoroughbred foals. HYPOTHESIS: Well-controlled exercise could improve muscle potential ability for endurance running. METHODS: Thoroughbred foals at age 2 months were separated into control and ...
Schneider Suzanne M - - 2003
A unique, interim elastomer-based resistive exercise device (iRED) is being used on the International Space Station. PURPOSE: This study characterized iRED training responses in a 1-g environment by: 1) determining whether 16 wk of high-intensity training with iRED produces increases in muscle strength and volume and bone mineral density (BMD), ...
Tremblay Mark S - - 2004
The purpose of this study was to determine the acute anabolic and catabolic hormone response to endurance and resistance exercise bouts of equal volume in subjects with differing training status. Twenty-two healthy men were recruited who were either resistance trained (n = 7), endurance trained (n = 8), or sedentary ...
Rochester Carolyn L - - 2003
Exercise and activity limitation are characteristic features of chronic obstructive pulmonary disease (COPD). Exercise intolerance may result from ventilatory limitation, cardiovascular impairment, and/or skeletal muscle dysfunction. Exercise training, a core component of pulmonary rehabilitation, improves the exercise capacity (endurance and, to a lesser degree, maximal work capacity) of patients with ...
Kime Ryotaro - - 2003
BACKGROUND: The purpose of this study was to determine the effects of hypoxic training on the cardiorespiratory system and skeletal muscle among well-trained endurance athletes in a randomized cross-over design. METHODS: Eight junior national level competitive cyclists were separated into two groups; Group A trained under normoxic condition (21% O2) ...
Doherty Roisheen A - - 2003
This study examined the effects of a 15-day cessation of training on maximal oxygen consumption and selected physiological variables (maximal heart rate, cardiac output [Q], stroke volume [SV], arteriovenous oxygen difference [(a-v)O2 diff], blood plasma concentration) in 15 women middle-distance competitive runners (.VO2max: 49.8 +/- 1.1 ml.kg(-1).min(-1)). Subjects were randomly ...
Tsuyuki Kazuo - - 2003
The purpose of this study was to clarify the utility of oxygen uptake efficiency slope (OUES) as a monitoring tool, and to investigate the effects of physical training in chronic hemodialysis (HD) patients. Seventeen patients (Trained Group) received physical training 2-3 times per week for 20 weeks at the intervals ...
Bougenot M-P - - 2003
Before and after investigation of the effects of a wheelchair ergometer Training programme. To investigate the effects of an original interval-training programme on work capacity and cardiorespiratory variables with spinal cord-injured persons (SCIP's) on a wheelchair-specific ergometer. BESANCON, FRANCE. Seven SCIP's (male) performed 45 min of wheelchair ergometry three times ...
Neary J Patrick - - 2003
This study examined the effects of different 7-day taper protocols on simulated 20-km time trials (20TT). Following 3 weeks of baseline training, 11 male cyclists (.VO2max = 4.78 +/- 0.66 L.min-1) were randomly assigned to one of three stepwise reduction tapers in which training volume was reduced by 30% (T30, ...
Høiness Per - - 2003
A bi-directional bicycle pedal that combines proprioceptive training and evertor strengthening has been developed for the treatment of residual instability after ankle sprains. A prospective randomized study was carried out on 19 subjects with recurrent ankle sprains and positive stress X-ray films. The subjects were randomized to use either a ...
Carter James B - - 2003
PURPOSE: This research investigated the age and gender differences in cardiovascular adaptation to a standardized/quantified endurance-training program that included two taper periods. METHODS: The latter was analyzed from spectral analysis of electrocardiogram records of heart rate variability (HRV) at rest in groups of young (19-21 yr) and middle aged (40-45 ...
Emtner Margareta - - 2003
Supplemental oxygen improves exercise tolerance of normoxemic and hypoxemic chronic obstructive pulmonary disease (COPD) patients. We determined whether nonhypoxemic COPD patients undergoing exercise training while breathing supplemental oxygen achieve higher intensity and therefore improve exercise capacity more than patients breathing air. A double-blinded trial was performed involving 29 nonhypoxemic patients ...
Yamazaki Fumio - - 2003
The effect of physical training on the cutaneous vascular response during transient exercise load is unclear. We determined the phase response and amplitude response of cutaneous vascular conductance (CVC) in the hand during sinusoidal exercise in endurance exercise-trained and untrained subjects. Subjects exercised on a cycle ergometer with a sinusoidal ...
Laffite L P - - 2003
The aim of this study was to examine (i) the effects of a severe interval training period on oxygen pulse kinetics (O2-p, the ratio between VO2 and heart rate), and (ii) to study the consequences of these effects on the variation of performance (time to exhaustion) during severe runs. Seven ...
Puente-Maestu Luis - - 2003
BACKGROUND: There has been no systemic investigation of the effects of training on endurance at different high-intensity work rates in patients with COPD to date. OBJECTIVES: We wanted to determine the effects of intense endurance training on tolerance to several high-intensity work rates and to establish the relationship between power ...
Petibois C - - 2003
Changes in the metabolic response to an endurance exercise were studied (18 rowing km at 75 % of maximal aerobic velocity) during detraining in ten rowers previously highly-trained. Maximal aerobic velocity (VO2 max) and the metabolic response to exercise were determined in the 1 st, 24 th, and 47 th ...
Liow David K - - 2003
PURPOSE: Athletes often use weight training to prepare for sprint events, but the effectiveness of different types of weight training for sprinting is unclear. We have therefore investigated the effect of slow and explosive weight training on kayak sprint performance. METHODS: Twenty-seven male and 11 female experienced sprint kayakers were ...
Ookawara Tomomi - - 2003
The effects of endurance training and acute exhaustive exercise on plasma levels of three superoxidedismutase (SOD) isoenzymes and the ability of superoxide generation in neutrophils were studied. Eighteen healthy male students, aged 17-22 years, who volunteered for this study, underwent three months of endurance training in swimming or running. Before ...
Lan Ching - - 2003
OBJECTIVE: To investigate whether poor response to exercise training can detect restenosis in asymptomatic patients after percutaneous transluminal coronary angioplasty (PTCA). DESIGN: Case-control study. SETTING: A hospital-based outpatient cardiac rehabilitation program in Taiwan. PARTICIPANTS: Sixteen patients aged 49.7+/-7.8 years who had undergone PTCA and completed a 3-month exercise program. Patients ...
Maire Jérôme J Laboratoire des Sciences du Sport, UFRSTAPS, Bâtiment Bichat, Besançon, France. - - 2003
To evaluate the influence of an interval training program for the upper limbs on cardiorespiratory fitness and walking ability in elderly patients after total hip joint arthroplasty. A randomized controlled trial. After surgery, control and training groups started general rehabilitation. Training group combined it with an arm-interval exercise program (3 ...
Iwasaki Ken-Ichi - - 2003
Occupational or recreational exercise reduces mortality from cardiovascular disease. The potential mechanisms for this reduction may include changes in blood pressure (BP) and autonomic control of the circulation. Therefore, we conducted the present long-term longitudinal study to quantify the dose-response relationship between the volume and intensity of exercise training, and ...
Tsimaras Vassilis - - 2003
The purpose of this study was to evaluate the effects of an aerobic training program on adults with Down syndrome. 25 male adults with Down syndrome (M age = 24.6 yr., [Qs = 45-60) participated in a 12-wk. exercise training study. Subjects were assigned to an experimental group (n = ...
Raastad T - - 2003
Exercise induced neuromuscular fatigue, recovery and hormonal responses were studied before (R1) and after (R2) 2 weeks of heavy strength training. Seventeen weight-trained male students were recruited into a heavy training group (HT, n = 10) and a control group (n = 7). During heavy training HT exercised leg extensors ...
Kobayashi Nobuhiko - - 2003
The present study investigates whether lower-limb dominant exercise training in patients with chronic heart failure (CHF) improves endothelial function primarily in the trained lower extremities or equally in the upper and lower extremities. Twenty-eight patients with CHF were randomized to the exercise or control group. The exercise group underwent cycle ...
Nordsborg Nikolai - - 2003
Changes in gene expression during recovery from high-intensity, intermittent, one-legged exercise were studied before and after 5.5 wk of training. Genes related to metabolism, as well as Na+, K+, and pH homeostasis, were selected for analyses. After the same work was performed before and after the training period, several muscle ...
Christou Demetra D - - 2003
Baroreflex buffering plays an important role in arterial blood pressure control. Previous reports suggest that baroreflex sensitivity may be altered in endurance exercise-trained compared with untrained subjects. It is unknown, however, if in vivo baroreflex buffering is altered in the endurance exercise-trained state in humans. Baroreflex buffering was determined in ...
< 8 9 10 11 12 13 14 15 16 17 18 >