Search Results
Results 351 - 400 of 623
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Bernal D - - 2001
Elasmobranchs and bony fishes have evolved independently for more than 400 million years. However, two Recent groups, the lamnid sharks (Family Lamnidae) and tunas (Family Scombridae), display remarkable similarities in features related to swimming performance. Traits separating these two groups from other fishes include a higher degree of body streamlining, ...
Broocks A - - 2001
RATIONALE: Several clinical studies suggest antidepressive and anxiolytic effects of regular aerobic exercise. OBJECTIVES: The present study examines the effects of a 10-week protocol of moderate aerobic exercise (3-4 miles jogging 3 times per week) on central serotonergic receptor sensitivity. METHODS: Neuroendocrine challenges using oral doses of meta-chlorophenylpiperazine (m-CPP; 0.4 ...
Wilson M L - - 2001
To determine the optimal anaerobic companion bottle to pair with BACTEC Plus Aerobic/F medium for recovery of pathogenic microorganisms from adult patients with bacteremia and fungemia, we compared Plus Anaerobic/F bottles with Standard Anaerobic/F bottles, each of which was filled with 4 to 6 ml of blood. The two bottles ...
Pierson L M - - 2001
PURPOSE: This study examined the effects of performing combined resistance and aerobic training, versus aerobic training alone, in patients with coronary artery disease. METHODS: Thirty-six patients with coronary artery disease were randomized to either an aerobic-only training group (AE) or a combined aerobic and resistance training group (AE + R). ...
Cruz A - - 2001
A sequential anaerobic/aerobic treatment process was used to biodegrade the azo dye disperse blue 79 (DB79). The integrated process was successfully tested and operated for the mineralization of the DB79 dye until a concentration of 120 mg/l in 96 h. In the first stage, the anaerobic biofilter biotransformed the DB79 ...
Cimen B - - 2001
Patients with rheumatoid arthritis (RA) show lower cardiorespiratory fitness than normal subjects. This study was planned to investigate the pulmonary function tests (PFT), respiratory muscle strength and endurance, and aerobic capacity of patients with RA, as well as the relationship of these parameters to clinical and functional status. Twenty-five RA ...
Solenberger S E - - 2001
The purpose of this study was to describe the exercise behavior across the DSM-IV eating disorder diagnosis (anorexia nervosa (AN), bulimia nervosa (BN), and eating disorder not otherwise specified (EDNOS)) and determine if differences exist among exercise category (high level and low level), type of exercise (aerobic, strength, and total), ...
Petruzzello S J - - 2001
Previous research has shown that regional brain activation, assessed via frontal electroencephalographic (EEG) asymmetry, predicts affective responsivity to aerobic exercise. To replicate and extend this work, in the present study we examined whether resting brain activation was associated with affective responses to an acute bout of aerobic exercise and the ...
Laukkanen R M - - 2001
This study measured heart rate during floor and step aerobic classes at three intensity levels. A group of 20 female occasional exercisers [mean age 33 (SD 8) years, mean body mass index 21 (SD 2) kg.m-2 volunteered to participate in six aerobic classes (three floor classes, three step classes) and ...
Nixon S - - 2001
The profile of HIV infection is constantly changing. Although once viewed as an illness progressing to death, HIV infection now presents as a chronic infection characterized by unpredictable cycles of wellness and illness. Thus, the needs of this population have increasingly included management of impairments, disabilities and handicaps. Exercise is ...
Dawes H - - 2000
Aerobic exercise training has demonstrated positive effects after brain injury. However, therapists express concern regarding the use of effortful exercise in individuals presenting with spasticity or involuntary muscle activity. This study aimed to address this concern and to evaluate whether an intervention of maximal intensity cycling exercise impaired an individual's ...
Meyer T - - 2000
Aerobic exercise seems to be effective in improving general mood and symptoms of depression and anxiety in healthy individuals and psychiatric patients. This effect is not limited to aerobic forms of exercise. There are almost no contraindications for psychiatric patients to participate in exercise programmes, provided they are free from ...
Faff J - - 2000
BACKGROUND: The purpose of this study was to estimate changes in the aerobic- and anaerobic-dependent performance tasks in paratroopers during 18 mo of their military service. METHODS: There were 39 Polish Army recruits, enlisted to the paratroops, who volunteered for this study. The subjects were examined on enlisting and then ...
Sevick M A - - 2000
PURPOSE: The purpose of this study was to determine, in a randomized clinical trial of 439 individuals with knee osteoarthritis, the incremental cost-effectiveness of aerobic versus weight resistance training, compared with an education control intervention. METHODS: Cost estimates of the intervention were based upon the cost of purchasing from the ...
Stringer W W - - 2000
Cardiopulmonary exercise testing (CPX) is an important diagnostic tool for both clinical and research purposes in HIV positive (HIV+) individuals. Important information can be obtained from the gas exchange responses that can elucidate heart, lung, peripheral vascular, pulmonary vascular, and muscle abnormalities in this population. A large percentage of these ...
Sagiv M - - 2000
PURPOSE: The present study compared and evaluated left ventricular function and contractility at peak incremental aerobic type exercise and all-out explosive anaerobic effort in young healthy trained subjects. METHODS: Twenty-two young healthy trained subjects (19 +/- 1 yr) were studied by two-dimensional direct M-mode echocardiography at peak aerobic and at ...
Lavie C J - - 2000
PURPOSE: Although cardiopulmonary exercise variables predict prognosis, functional capacity, and quality of life (QoL) in patients with coronary artery disease (CAD), these variables have not been assessed fully before and after exercise training in elderly with CAD. Therefore, the purpose of this study was to determine the impact of formal ...
Magnié M N - - 2000
Electrophysiological effects of aerobic fitness and maximal aerobic exercise were investigated by comparing P300 and N400 before and after a maximal cycling test. Event-related potentials (ERPs) were obtained from 20 students divided into two matched groups defined by their aerobic fitness level (cyclists vs. sedentary subjects). The session of postexercise ...
Schaeffer-Gerschutz S A - - 2000
Overall ratings of perceived exertion, i.e., undifferentiated RPE, are often used as indicators of exercise intensity during walking, jogging, and cycling; however, conflicting results concerning RPE during aerobic dance exercise have been reported, and the use of differentiated RPE, i.e., local RPE and central RPE, has not been investigated. The ...
Bates D M - - 2000
To understand the role of the [4Fe-4S](2+) cluster in controlling the activity of the Escherichia coli transcription factor FNR (fumarate nitrate reduction) during changes in O(2) availability, we have characterized a mutant FNR protein containing a substitution of Leu-28 with His (FNR-L28H) which, unlike its wild type (WT) counterpart, is ...
Ramadan J M - - 2000
OBJECTIVE: The aim of this study was to quantify the magnitude of the cardiovascular and respiratory changes that occur during the month of Ramadan in response to moderately heavy aerobic physical exertion. METHODS: Eighteen sedentary Kuwaiti adult males were tested under thermo-neutral conditions during a spring-like month of Ramadan and ...
Bonetti A - - 2000
BACKGROUND: Coenzyme Q10 (CoQ10) plays an important role in oxidative mithocondrial phosphorylation and prevents lipid peroxidation in biological membranes. During sustained physical exercise, reactive oxygen species (ROS) production increase through several mechanism; one of them is the purine nucleotide cycle activation by shifting xanthine-dehydrogenase to xanthine-oxidase during AMP breakdown. The ...
Wolach B - - 2000
OBJECTIVES: Recent studies have indicated reduced immunity in trained athletes. AIM: To assess the effects of aerobic and anaerobic exercise on the phagocytic process in 18-26 year old trained female judoka (n = 8) and untrained controls (n = 7). METHODS: Each subject participated randomly in two different testing sessions ...
Christman S K - - 2000
Past research suggests that continuous handrail support during exercise attenuates physiologic responses to exercise and reduces aerobic benefits; however, this phenomenon has not been systematically studied in women exercising on the step treadmill. The effects of three levels of handrail support (continuous light, continuous very light, or no handrail support) ...
Rowland T - - 2000
Maximal oxygen uptake (VO2max) in females, expressed as ml x kg(-1) x min(-1), declines steadily during the first three decades of life. The contribution of diminished cardiovascular function to this apparent fall in aerobic fitness is unknown. Cardiac responses to maximal cycle exercise were compared in 24 premenarcheal females (mean ...
Hayakawa Y - - 2000
This study evaluated the effect of music on the mood of women during exercise. 16 middle-aged women, aged 49.9 +/- 7.53 yr., performed 60-min. bench stepping exercise while listening to Japanese traditional folk song, aerobic dance music, or nonmusic. The subjects reported significantly less fatigue with aerobic dance music and ...
Haydar Z R - - 2000
The presence or absence of early repolarization on the electrocardiogram at rest was correlated with aerobic exercise capacity in healthy volunteers from the Baltimore Longitudinal Study of Aging. Patients with early repolarization had both longer treadmill exercise duration and higher peak oxygen consumption than age-and gender-matched control subjects.
Warburton D E - - 2000
OBJECTIVE: Blood volume (BV) and hemoglobin concentration ([Hb]) play important roles in oxygen transport. Manipulation of both BV and [Hb] can markedly affect systemic oxygen transport and maximal aerobic capacity (VO2max). However, the role of BV in oxygen transport and aerobic performance is not well understood. It has recently been ...
Stringer W W - - 1999
Aerobic exercise training is an important therapy to offer individuals who are HIV positive (HIV+). Six to 12 weeks of moderate exercise sessions (3 times per week for 1 hour) significantly improves aerobic capacity (VO2max and lactic acidosis threshold), apparently without detrimental effects on the immune system. In addition, small ...
Bishop C M - - 1999
Resting or basal metabolic rates, compared across a wide range of organisms, scale with respect to body mass as approximately the 0.75 power. This relationship has recently been linked to the fractal geometry of the appropriate transport system or, in the case of birds and mammals, the blood vascular system. ...
Mahle W T - - 1999
OBJECTIVES: We sought to determine if early ventricular volume unloading improves aerobic capacity in patients with single ventricle Fontan physiology. BACKGROUND: Surgical strategies for patients with single ventricle include intermediate staging or early Fontan completion to reduce the adverse affects of prolonged ventricular volume load. The impact of this strategy ...
Yagi Y - - 1999
Visual and auditory reaction times (RTs) have been reported to decrease during moderate aerobic exercise, and this has been interpreted as reflecting an exercise-induced activation (EIA) of cognitive information processing. In the present study we examined changes in several independent measures of information processing (RT, accuracy, P300 latency and amplitude) ...
Taivassalo T - - 1999
We have previously demonstrated that patients with mitochondrial myopathies can benefit from short-term aerobic exercise training. In this study, we compared the responses to short-term aerobic training of patients with mitochondrial myopathies, patients with nonmetabolic myopathies, and sedentary normal subjects. Training consisted of 8 weeks of treadmill exercise at 70% ...
Villa J G - - 1999
BACKGROUND: Physical conditioning has been reported to increase liver oxidative metabolism determined by antipyrine clearance. The purpose of this investigation was to study effects of aerobic conditioning on the different metabolic pathways of antipyrine by comparing the production clearances of antipyrine metabolites. METHODS: Participant: volunteers not engaged in the systematic ...
Chappell MA - - 1999
We evaluated the relationship between organ mass and the limits to aerobic metabolism in house sparrows Passer domesticus. The results were used to test three models of performance limitation (the central limitation, peripheral limitation and symmorphosis concepts). Basal metabolic rate (BMR) was determined during the rest phase. The maximum rate ...
Stenström C H - - 1999
The aim of the present study was to investigate the influence of an exercise program on neuropeptide concentrations, disease activity, impairments and disabilities in rheumatoid arthritis (RA). Eleven females (median age 60 years, median disease duration 6.5 years, ARA functional classes I or II) exercised 30 min daily for 4 ...
Morey M C - - 1999
BACKGROUND: As exercise is associated with favorable health outcomes, impaired older adults may benefit from specialized exercise interventions to achieve gains in function. The purpose of this study was to determine the added benefit of a spinal flexibility-plus-aerobic exercise intervention versus aerobic-only exercise on function among community-dwelling elders. METHODS: We ...
Cheung S S - - 1999
This study investigated whether, in subjects of moderate aerobic fitness, short-term aerobic training could replicate the improved physiological responses to exercise-heat stress observed in individuals with a high level of aerobic fitness. Males of moderate (MF; <50 ml x kg(-1) min(-1) VO2peak, n = 8) and high (HF; >55 ml ...
Kraemer R R - - 1999
It has been demonstrated that leptin concentrations in obese patients may be altered by weight loss. We examined the effects of a 9-week aerobic exercise program on serum leptin concentrations in overweight women (20-50% above ideal body mass) under conditions of weight stability. Sixteen overweight women, mean (SE) age 42.75 ...
Sutherland R - - 1999
The aims of this study were to establish the cardiovascular and metabolic demands of a university step aerobics session entitled 'Uni-Step' performed at three step heights, and to evaluate the use of heart rate and ratings of perceived exertion for the estimation of exercise intensity during this mode. Ten female ...
Stuerenburg H J - - 1999
We have measured concentrations of 26 serum amino acids in 46 subjects (aged 17-75 years), with the following neurological diseases: amyotrophic lateral sclerosis, n=7; peripheral neuropathy, n=5; muscular dystrophy, n=7; mitochondriopathy, n=3; metabolic myopathy (others), n=2; inflammatory myopathy, n=4; mononeuropathy, n=3; controls (patients with symptoms suggesting neuromuscular system dysfunction without ...
Neder J A - - 1999
BACKGROUND: Aerobic training has a number of well known beneficial effects in both normal and asthmatic children. However, the impact of training on the clinical management of the underlying bronchial asthma remains controversial, particularly in the most severe patients. METHODS: Clinical evaluation, spirometric tests, symptom limited maximum exercise testing, and ...
Midha M - - 1999
OBJECTIVE: To determine the effect of exercise with the wheelchair aerobic fitness trainer (WAFT) on anthropometric indices, conditioning, and endocrine and metabolic parameters in persons with lower extremity disability. DESIGN: Exercise sessions with the WAFT lasted 20 to 30 minutes for two to three sessions. SETTING: Tertiary-care Veterans Administration medical ...
Terry L - - 1999
HIV-infected individuals are frequently active, but guidelines for exercise in this population lack scientific support, since studies on the effects of exercise training on immunologic variables of HIV-1 positive individuals have shown conflicting results. Exercise capacity, immunologic markers (CD4, CD8 and CD4:CD8 ratio), anthropometric measurements, and depression scores were evaluated ...
Gledhill N - - 1999
Alterations in [Hb], which are mediated through changes in arterial oxygen content, and alterations in BV, which are mediated through changes in cardiac output (Q), have a significant effect on both VO2max and aerobic performance. If BV is held constant, a decrease in [Hb] (anaemia) causes a decrease in VO2max ...
DiLorenzo T M - - 1999
BACKGROUND: Although the literature on increased physical fitness and psychological outcomes has grown large, a number of methodological limitations remain unaddressed. The present study was designed to address a number of these limitations while examining the short- and long-term psychological effects following completion of a 12-week aerobic fitness program using ...
Bouix D - - 1998
While it is well established that blood viscosity is decreased in sportsmen and related to fitness, the involvement of fibrinogen in this relationship is less well defined. Relationships among fitness, rheology and fibrinogen were investigated in 32 football players (age 17-33 years: 19 professionals and 13 leisure players). A submaximal ...
Caserta M S - - 1998
Sedentary, overweight women aged 60-70 years were assigned either to a 16-week health education group (n = 70) in which they were instructed to exercise aerobically on their own three times per week or to a 16-week exercise group (n = 76) that consisted of three supervised aerobic sessions per ...
Allen J D - - 1998
OBJECTIVE: To determine the short term effects (21 days) of 200 mg (7% standardized) Panax ginseng supplementation vs. placebo on peak aerobic exercise performance in healthy young adults, with unrestricted diets. METHODS: Twenty men and eight women (age = 23.2 +/- 3.2 years, height = 175.8 +/- 8.6 cm; weight ...
Nakanishi Y - - 1998
Environmental and cultural aspects are known to influence particular characteristics of an ethnic group and, as such, are partially responsible for distinguishing an ethnic group from others. This study was designed to compare non-athlete young Japanese and American males on a variety of physiological and fitness characteristics in order to ...
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