Search Results
Results 601 - 650 of 921
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Aminoff T - - 1996
Ten young (aged 23-30 years) and nine older (aged 54-59 years) healthy men with similar estimated limb muscle volumes performed, in random order, three different types of ergometer exercise tests (one-arm cranking, two-arm cranking, and two-leg cycling) up to the maximal level. Values for work load (WL), peak oxygen consumption ...
Bangsbo J - - 1996
The present study examined NH3 (ammonia and ammonium) uptake in resting leg muscle. Six male subjects performed intermittent arm exercise at various intensities in two separate 32-min periods (part I and part II) and in one subsequent 20-min period in which one-legged exercise was also performed (part III). The arterial ...
Rissanen S - - 1996
Thermal responses and muscle performance in humans were studied during rest and exercise in a cool environment with different clothing distributions over the legs. Nine female subjects were exposed to 5 degrees C wearing shorts (SS), trousers with long legs (LL) or trousers with one long leg and one short ...
Hoffman M D - - 1996
The primary purpose of this study was to determine if the aerobic demand for production of specified power outputs is altered by distribution of work between the arms and legs compared with when all the work is performed by the legs. Because of the important exercise training implications, a secondary ...
Eliot D J - - 1996
OBJECTIVE: Understanding the recruitment patterns of shoulder girdle prime-mover muscles will allow meaningful exploration of non-prime-mover neck muscle activity during arm and shoulder efforts. This study identifies exercises that isolate recruitment of levator scapulae from recruitment of upper trapezius. The exercises will be used for electromyographic experiments in which the ...
Zattara-Hartmann M C - - 1996
There is no clear evidence that the cardiorespiratory response to progressive maximal leg exercise was affected in proportion to the fall in PaO2 as measured from arterialized ear lobe blood. Subjects inhaling room air (rest PaO2 = 81 +/- 1 mmHg) or hypoxic gas mixtures, containing 15% or 10% O2 ...
Fink G R - - 1995
1. The neurophysiological basis for the increase in breathing associated with exercise remains obscure. The present study uses positron emission tomography (PET) to measure relative regional cerebral blood flow (rCBF) in order to identify sites of increased neuronal activation during and immediately following exercise. 2. Male volunteers underwent H2(15)O PET ...
Johnson D - - 1995
OBJECTIVES: The purpose of this study was to characterize peripheral flow kinetics in response to progressive discontinuous maximal exercise in 10 patients who underwent repair of coarctation of the aorta and 11 age-matched healthy adolescents. BACKGROUND: An impairment of leg blood flow has been suggested on the basis of exaggerated ...
Cafarelli E - - 1995
One of the consequences of endurance training is a reduction in force sensation in trained muscles at any exercise intensity. To study the central and peripheral contributions to this adaptation, we trained six male subjects with single-leg cycling at 60% VO2 peak (30 min/day x 3 days/week x 8 weeks); ...
Richardson R S - - 1995
Recent studies have demonstrated that single-leg knee extensor (KE) exercise elicits high mass-specific blood flow (Q) which, if incremented toward maximum, in the presence of additional muscle recruitment would soon outstrip the heart's pumping capacity and blood pressure would fall. Thus incremental KE exercise provides the opportunity to determine the ...
Riley J D - - 1995
Leg cramps are a common problem, especially in the elderly. The differential diagnosis is extensive and includes the following conditions: true cramps, such as those related to heat, hemodialysis and electrolyte disturbances, as well as idiopathic cramps (the most common type); contractures occurring in conditions such as metabolic myopathies and ...
Louisy F - - 1995
Seven healthy subjects were submitted to a 42-day head down bedrest, where leg venous compliance (venous distensibility index VDI) and leg volumes were assessed by mercury strain gauge plethysmography with venous occlusion and optoelectronic plethysmography, respectively. Plethysmographic and volometric measurements were made, before, during (at days 1, 4, 7, 14, ...
Tiidus P M - - 1995
Manual massage is commonly assumed to enhance long term muscle recovery from intense exercise, partly due to its ability to speed healing via enhanced muscle blood flow. We tested these assumptions by daily (for four days) massaging the quadriceps muscles of one leg on subjects who had previously completed an ...
Rinder A N - - 1995
Thirteen males and 7 females completed their maximum number of leg extensions against a half maximum load. In a randomised, crossover study they were exercised to fatigue using an ergonometer, ski-squats and leg extensions followed either by a 6 min massage or rest after which they again completed their maximum ...
Seto H - - 1995
To determine the effect of exercise intensity on regional blood flow in exercising and resting leg muscles and organs, we assessed relative changes in the regional distribution of 201Tl during one-leg ergometer exercise and at rest by whole-body scintigraphy as an estimate of regional blood flow changes in 10 healthy ...
Galindo-Ciocon D - - 1995
1. Leg edema is a common problem in the elderly, with diverse etiologies. 2. Raised-leg exercise is only effective for the leg edema due to venous insufficiency. 3. Compression stockings have been shown to be effective only for a limited time and may not be useful for individuals with disproportionately ...
Yamabe H - - 1995
The relationship between blood flow in the working leg and cardiac output (Q) response was determined for patients with chronic heart failure. The ratio of leg blood flow (LBF) to Q (LBF/Q) at the same workload during submaximal exercise was significantly different in three groups of patients classified by peak ...
Philbin E F - - 1995
STUDY OBJECTIVE: Although no studies exist, to our knowledge, that examine the feasibility and safety of stress testing in a consecutive series of patients with severe arthritis, musculoskeletal conditions are often listed as relative contraindications to graded exercise testing. The current study was designed to examine the feasibility of maximal ...
Goodman L S - - 1995
This study was done to determine (a) whether in coronary artery disease (CAD) left ventricular (LV) adaptations differed after 6 months of walking/jogging (legs-only, LO) versus aerobic circuit training (arms and legs, AL) versus a control group, and (b) whether a transfer of fitness to the untrained arms in the ...
Louisy F - - 1995
In order to test the hypothesis that increases in calf venous distensibility in microgravity are partly due to the changes affecting the surrounding skeletal muscles (muscular atrophy), 12 healthy volunteers were exposed for 28 d to microgravity simulated by -6 degrees head-down bed rest. Half these subjects were exposed to ...
Robertson R - - 1995
This investigation determined metabolic (i.e., kcal.min-1) responses and ratings of perceived exertion (RPE) for varying pedal-crank rates (PCR) and power outputs (PO) during arm and leg exercise in thermoneutral air (TA) and water (TW). Nine males (age 28.2 yr; leg cycle VO2peak 3.4 l.min-1) undertook the 24 exercise trials. During ...
Guenthard J - - 1995
Exercise-induced hypertension of the arms is a well-known late complication after coarctation repair. Residual narrowing at the anastomosis site as well as abnormalities of the precoarctation arterial system may be the cause of this problem. Blood pressure response to exercise and flow-mediated arterial dilatation of the arms and legs were ...
Olesen H L - - 1995
In eight subjects luminal diameter of the resting limb radial and dorsalis pedis arteries was determined by high-resolution ultrasound (20 MHz). This measurement was followed during rest and during 2 min of static handgrip or of one-leg knee extension at 30% of maximal voluntary contraction of another limb. Static exercise ...
Franklin B A - - 1995
OBJECTIVE: To assess the physiologic responses to manual (shoveling) vs automated (electric snow thrower) snow removal in healthy, untrained men. DESIGN: Observational, controlled trial. SETTING: A community-based, acute care, teaching-research hospital. PARTICIPANTS: A volunteer sample of 10 apparently healthy untrained men (mean +/- SD age = 32.4 +/- 2.1 years) ...
Kim C K - - 1995
Leg blood flow, blood pressure and metabolic responses were evaluated in six men during incremental one-legged dynamic knee extension exercise tests (no load exercise-40 W); one performed with voluntary contractions (VOL) and one with electrically induced contractions (EMS). Pulmonary oxygen uptake was the same in both exercise modes, but the ...
Masuda K - - 1995
With special reference to skeletal growth, a 17-year follow-up study of a lower-leg replantation in a four-year-old boy is reported. The patient maintained good cosmesis and function; however, foot size on the affected side was 1.5 cm smaller than the contralateral side, and leg length was 1.2 cm shorter than ...
Phillips W - - 1995
Eight spinal cord injured (SCI) patients performed three sets of exercise with two conditions, 60% and 80% of VO2peak, with an arm crank ergometer. Functional neuromuscular stimulation was used to induce static leg contractions in two of the above sets of exercise. The three exercise sets were performed with no ...
Kang S W - - 1995
We compared the electrical activities recorded from the muscles of the unexercised leg with changing the position of the contralateral stabilization bar to determine whether the degree of muscle contraction was influenced by the position of the bar during one-legged isokinetic exercise using an isokinetic dynamometer. The root mean square ...
Ray C A - - 1995
The purpose of this study was to determine whether efferent sympathetic nerve activity is different to resting skeletal muscles from the exercising and nonexercising limb. MSNA was measured by microneurography in both legs (peroneal nerve) in six subjects during 2 min of unilateral isometric knee extension (IKE; 10-30% of maximum ...
Yoshida T - - 1995
To assess the rate-limiting factor of oxygen uptake (VO2) kinetics at the onset of exercise, six healthy male sedentary subjects performed repeated one-legged constant-load cycle exercise. The one-legged constant-load exercise test consisted of two 5-min periods of pedalling at an exercise intensity of 50 W, with a 5-min rest between ...
Jiang Z L - - 1995
Cerebral blood volume flow and flow velocity have been reported to increase during dynamic exercise, but whether the two increase in parallel and whether both increases occur as functions of exercise intensity remain unsettled. In this study, blood flow velocity in the common carotid artery was measured using the Doppler ...
Hughson R L - - 1995
Gravity adds about 40-50 mmHg perfusion pressure to the arterial supply of the quadriceps muscles in the upright posture. This could have important implications in supply of blood flow during exercise. Recently, we have shown that when subjects exercise in the supine posture the rate of increase in VO2 is ...
Frennesson C - - 1995
The present institutional study was undertaken in order to determine whether testing of colour contrast sensitivity is valuable in detecting early functional changes in patients at initial stages of age-related maculopathy (ARM). The study included 27 patients with soft drusen as an early sign of ARM and 29 age-matched normals. ...
Ciocon J O - - 1995
Leg edema is a common problem in the elderly and requires further evaluation and management. From October 1990 to July 1992, 245 patients presented to the Cleveland Clinic Florida with leg edema. All patients were counseled about the benefits of twenty-minute, three-times-a-day raised-leg exercises. Fifty seven (57) of the 245 ...
Tullson P C - - 1995
This study addressed whether AMP deaminase (AMPD)myosin binding occurs with deamination during intense exercise in humans and the extent of purine loss from muscle during the initial minutes of recovery. Male subjects performed cycle exercise (265 +/- 2 W for 4.39 +/- 0.04 min) to stimulate muscle inosine 5'-monophosphate (IMP) ...
McHugh G J - - 1994
We have studied in 12 healthy male volunteers the effects of three different body positions (10 degrees head-down tilt, horizontal supine and supine with 50-cm leg elevation from the hip) on the spectral components of heart rate and finger plethysmographic amplitude variability. We have demonstrated the absence of any statistically ...
Erdoes L S - - 1994
Positional popliteal artery obstruction is believed to be an important factor contributing to popliteal artery entrapment syndromes. This study was undertaken to define the positional anatomy and physiologic condition of the vessels in the popliteal fossa in groups of highly trained and normally active young men and women. We postulate ...
Landgraf H - - 1994
In order to study pathological changes that might lead to deep vein thrombosis and pulmonary embolism in long-distance air travel passengers, 12 healthy volunteers were investigated during 4 simulated 12-h flights (day and night). The influence of repeated leg exercise was compared with constant sitting. Plasma viscosity, hematocrit, albumin, fluid ...
Bangsbo J - - 1994
This study examined the effect of low-intensity exercise on lactate metabolism during the first 10 min of recovery from high-intensity exercise. Subjects exercised (61.0 +/- 5.4 W) one leg to exhaustion (approximately 3.5 min), and after 1 h of rest they performed the same exhaustive exercise with the other leg. ...
Brown S P - - 1994
This study compares selected cardiorespiratory responses of six healthy females during exercise on rowing (R), cycle (C) and arm (A) ergometers. Their mean +/- sd age, mass and height were 22.3 +/- 3.0 years, 55.3 +/- 6.3 kg and 161.5 +/- 7.4 cm, respectively. Subjects reported to the laboratory on ...
Bogdanis G C - - 1994
This study examined the effects of elevating blood lactate concentration by arm exercise on subsequent performance during repeated 30 s sprints with the legs. Eight male students performed two 30 s cycle ergometer sprints separated by 6 min of recovery, on two occasions. On one occasion the subjects performed only ...
Ishida K - - 1994
This study was undertaken to elucidate whether phase I appeared at the onset of voluntary and passive arm movements and to compare these results with those of similar leg movements. Instead of the conventional cranking exercise, seven male subjects performed alternately flexion-relaxation of both arms, extension-relaxation of both legs, and ...
Williamson J W - - 1994
Cardiovascular responses were obtained during cycling with graded levels of lower-body positive pressure (LBPP) applied to the exercising limbs. Seven men performed four incremental work rate (25 W.min-1) exercise (IWREx) tests to their limit of tolerance while exposed to 0, 15, 30, or 45 Torr LBPP. They also performed four, ...
Faria I E - - 1994
Cross-country ski poling is a distinctive exercise imposed by biomechanical motion which may influence the breathing pattern. To examine the ventilatory patterns of competitive cross-country skiers, the pulmonary function of nine male master level skiers was studied during simulated bilateral synchronous and asynchronous arm poling and upright leg cycling. Physiological ...
Celli B R - - 1994
There has been a revival of interest in the interaction between arm exercise and ventilation. Although arm ergometry continues to be the gold standard for the testing and training of upper extremities, an increasingly larger body of evidence indicates a more important role for the testing and training of upper ...
Kjaer M - - 1994
Cardiovascular and ventilatory responses to electrically induced dynamic exercise were investigated in eight healthy young males with afferent neural influence from the legs blocked by epidural anaesthesia (25 ml 2% lidocaine) at L3-L4. This caused cutaneous sensory anaesthesia below T8-T9 and complete paralysis of the legs. Cycling was performed for ...
Mertesdorf F L - - 1994
A study was performed to explore possible psychological benefits of additional arm work during cycle exercising. For this, the subjective and physiological responses of 12 healthy young males were studied during arm and leg exercise on a cycle ergometer with movable arm levers (at 2 distances of the handgrips from ...
Mertesdorf F L - - 1994
Different forms of exercise with a cycle ergometer in time with music were studied in comparison: exercise in time with a rhythm or with music at constant and movement-controlled music tempos, with simultaneous arm and leg work, and with leg work alone. For this pilot study an exercise cycle with ...
Murthy G - - 1994
Exercise within a lower body negative pressure (LBNP) chamber in supine posture was compared with similar exercise against Earth's gravity (without LBNP) in upright posture in nine healthy male volunteers. We measured footward force with a force plate, pressure in soleus and tibialis anterior muscles of the leg with transducer-tipped ...
Pandit J J - - 1994
1. The acute ventilatory response to a brief period of hypoxia (AHVR) was measured in six subjects (a) at rest, (b) during electrically induced leg exercise (EEL), (c) during voluntary leg exercise at an external work rate matched to electrical exercise (EV1) and (d) during voluntary leg exercise at an ...
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