Physical activity during leisure time and on the job have been measured with standardized interview techniques in 1,513 normal men, aged 40-55 years, who were regularly employed in different industries. Physical fitness was simultaneously estimated by measuring the work load at which a heart rate of 150 bpm was reached ...

A controlled trial was undertaken to examine the efficacy of physical training in patients recovering from the replacement of a single heart valve. Patients were allocated to a test or control group two weeks after operation. Each patient performed a submaximal exercise test at entry, and 12 and 24 weeks ...

Five autistic boys were observed during 27 language training sessions. Each session followed one of three periods: physical exercise, TV watching, or regular academic work. It was found that the lowest levels of self-stimulation followed physical exercise, there were no differences in the levels of self-stimulation following TV watching and ...

Patients recovering after heart valve surgery are not in an optimum state of 'cardiorespiratory fitness'. To examine this proposition a controlled trial of physical training was undertaken in patients recovering from the replacement of a single heart valve. Patients were allocated to a test or control group two weeks after ...

Fifty-three cyclists aged from 19 to 32 years were divided into three groups depending on the degree of physical fitness. Group I comprised 13 cyclists with high fitness, group II 19 cyclists with medium physical fitness, and group III 22 cyclists with low physical fitness. All studied subjects carried out ...

Fluid and crystalized intelligence differences among high-fit, young; high-fit, old; low-fit, young, and low-fit, old groups were investigated before and after an exercise program. The high-fit group had higher fluid intelligence than the low-fit group. Likewise, the young group scored higher than the old group. The four groups scored higher ...

The influence of physical conditioning on tolerance to a centrifugation profile of alternating 15 second plateaus at 4.5 and 7.0 +G sub z--called Simulated Aerial Combat Maneuvering (SACM)--was determined using 24 young men as subjects. These subjects were assigned to groups as controls (C) (no physical training), runners (R), and ...

The typical workload of a physician probably is not sufficient to produce and maintain a state of physical fitness. A majority of physicians seem to be involved in recreational exercise. However, the necessary data are not available regarding the frequency, duration, and intensity of their exercise--let alone on maximum heart ...

New studies support a lifestyle of regular physical activity. Regular physical activity most likely decreases one's risk for coronary heart disease and helps to decrease other risk factors. The inclusion of regular moderate exercise in one's life-style makes good sense for many reasons. It can improve the quality of life ...

Twenty-two patients on chronic hemodialysis were tested on a bicycle ergometer to determine their near-maximal physical work capacity. The patients were found to have low physical work capacity that averaged 51.6 +/- 3.8 (SE)% predialysis and 50.3 +/- 3.7% postdialysis, when compared with the physical work capacity of healthy control ...

A near maximal bicycle exercise test in 1,835 presumably healthy Norwegian men indicated a seasonal variation in physical fitness. Thus, the total amount of work performed was significantly higher, and the work pulse on equivalent loads significantly lower during the summer than during the autumn. Although the differences were small, ...

We investigated the circumstances of death and the medical and activity histories of 18 individuals who died during or immediately after jogging. Thirteen men died of coronary heart disease (CHD) and four men and one woman died of other causes. Six CHD subjects had medical histories relevant to the cardiovascular ...

This study investigated the relationships between serum testosterone level and selected physiological and personality variables in 58 males (21-61 years) before and after a four month physical fitness program consisting of jogging, calisthenics, and recreational activities. Physical fitness scores were obtained for each subject using a regression equation. Serum testosterone ...

The development of a sensitive radioimmunoassay for the measurement of myoglobin now permits the accurate determination and detection of even small concentrations of serum myoglobin. To determine the effect of exercise and physical conditioning on serum myoglobin levels, 16 male Army recruits (ages 18 to 28 years) underwent treadmill exercise ...

An experiment was conducted to determine the effect of participation in physical activity on resolution acuity. In the experiment, 21 undergraduate males participated in exercise sessions with work loads of 300, 700, and 1100 kmp for durations of 3 and 6 min. and a non-exercise control session. Resolution acuity was ...

Persons over 35 years old have an increased prevalence of risk factors. Careful medical examinations, even in a fit military population, are needed before initiating intensive physical training regimens. Risk factor profiling, which synthesizes major risk factors into a composite score, is a beneficial procedure by which to evaluate individuals. ...

This prospective investigation was done to evaluate five strength and fitness measurements and the subsequent occurrence of back injuries in 1652 firefighters for the years 1971 to 1974. The prospective measurements included flexibility, isometric lifting strength, bicycle ergometer exercise measurements of two-minute recovery heart rate, diastolic blood pressure at a ...

Physical exercise and physical training are known to affect several aspects of hepatic metabolism. To assess whether adaptation to long-lasting exercise modifies microsomal drug metabolism, 8 long-distance runners were compared with a group of medical students having significantly lower maximal rates of oxygen consumption. At rest the hepatic galactose elimination ...

The purpose of this paper is to reduce the confusion and misunderstanding of exercise mechanics terminology by giving simplified definitions of the most important physical quantities and terms. Isometric, isotonic, and isokinetic exercises are discussed and related to the appropriate physical quantities. The correct use of the most confusing and ...

A young (X = 36.8 years) and an old (X = 52.9 years) group (n = 12) matched for physical fitness performed a graded exercise test at the beginning and after a 4-month physical fitness program consisting of calisthenics, jogging, and recreational activities. The purpose of the study was to ...

In this study, we placed unilateral utricular nerve section and measured the locomotor equilibrium function (deviation counts of the animal's trotting gait) by the squirrel monkey platform runway test. We applied physical exercise, both preoperatively (3 weeks) and postoperatively. 21 young adult squirrel monkeys were randomly assigned to three groups ...

A group of patients suffering from cerebrovascular insufficiency was submitted to a pilot EEG investigation using physical exercise as a provocative method. Two control groups, one of young (20--30 years) and another of older (more than 50 years) subjects, were also investigated. Quantitative EEG spectral data, determined at rest and ...

Twenty healthy male volunteers were divided into four groups for a period of recreational physical exercise. Standard blood chemistry determinations were made before exercise and on the two subsequent days. Creatine phosphokinase (CPK), SGOT, and lactic dehydrogenase levels were transiently elevated, but the change was considered significant only in the ...

Ten sets of dots ranging in number from 7 to 91 per set were presented to 54 subjects. Half were arranged regularly and half randomly. The regular sets were overestimated by an average of 22%, while the random were underestimated by 16% compared with the physical number. Evidence was presented ...

Subject's physiological responses and rated reactions to a medical film and an erotic film were assessed. Later cardiovascular fitness levels were determined by subject's physiological responses to an exercise task. The greater the increase in the subject's systolic blood pressure after exercise and the slower the recovery, the lower the ...

The literature suggests two major factors determine rated perceived exertion during physical work. These two factors are a local factor, i.e., sensations or feelings of strain in the working muscles and/or joints; and a central factor, i.e., sensations or feelings primarily associated with the cardiorespiratory systems. In some experiments heart ...

The quality of life in old age is crucially dependent upon the ability to pursue a variety of physical activities. Factors which affect the capacity for physical activity in the elderly should therefore be of interest both to individuals and to institutions concerned for the elderly. This is a review ...

The question of whether there is some effect of status of cardiorespiratory fitness and exercise ECG abnormalities on occurrence of CHD other than their effect on the risk factors of serum cholesterol, blood pressure, glucose, and smoking seems to have been answered in the affirmative by this study. The relative ...

The purpose of this study was to determine whether a single full therapeutic dose (24 mg) of ephedrine taken orally has any effect upon physical performance and fitness. Twenty-one healthy males, aged 19-30 years, were tested on three occasions within three weeks using a double-blind modified crossover design. The effects ...

A comparison of physical capacity, (measured by vital capacity, muscular strength and physical work capacity) in twin boys and controls failed to indicate significant differences. Intrapair correlations showed the MZ twins to be much more similar than the DZ twins in all the capacity measures. The correlations were lower, however, ...

Physiological responses to exercise and anthropometry were measured in several groups of physical laborers. The groups included Colombian sugar cane cutters, sugar cane loaders and general farm laborers. In addition, migrant workers and civil service laborers from the United States were studied. The Colombian populations were generally shorter, weighed less ...

In order to study the influence of physical exercise on liver function, experiments were performed in healthy volunteers subjected to controlled major physical effort. Blood samples obtained by catheterization of hepatic vein during exercise were analyzed for activities of LD (thermostabile and thermolabile isoenzymes), AlAT, SDH, ICD, AP and CPK, ...

One hundred and three primigravidae were studied to establish the correlation between physical fitness and heart volume. Twenty-three of the mothers were allocated at random to the exercise group and 21 to control group 1, between the 10th and 14th weeks of pregnancy. In addition, 59 mothers were allocated to ...

The purpose of this study was to investigate the effect of flunitrazepam, a benzodiazepine with strong hypnotic properties, on dream content. Eight normal subjects were studied in laboratory by the awakening technique, and the dream contents were rated by two judges according to nine scaled dimensions: unreality, participation of the ...

A reconditioning exercise program that was applied to group of 12 coronary patients resulted in an increase of their tolerance to physical work and of their maximal working capacity. In some instances the improvement in physical condition was accompanied by changes in indicators of cardiac function which suggest that an ...

Thirty-three dentists were studied as part of an exercise rehabilitation clinic in order to evaluate their cardiovascular capacity and coronary prone risk factors. Measurements were made of their physical work capacity, predicted maximal oxygen uptake, fatness, serum lipids and uric acid levels, pulmonary peak flow rates and personality Type A ...

Air bags in vehicles constitute a means of passive restraint for individuals involved in auto accidents. There is fear, however, that the inadvertent nonaccident-connected deployment of one of these air bags might substantially interfere with the handling of a vehicle in which such deployment occurred. We have found that while ...

Spontaneous nystagmus and locomotor equilibrium function were repeatedly tested before and after unilateral labyrinthectomy in 12 squirrel monkeys in order to study the effect of physical exercise on the vestibulo-oculomotor and vestibulo-locomotor compensation. Post-operatively, 6 of the monkeys received forced physical exercise in the rotating cage, while the other 6 ...

Nocardia caviae was identified as the causative agent of draining, multinodular swelling of the hand of a 16-yr-old female baboon (Papio cynocephalus). The baboon's general physical condition was poor and menstrual cycles had ceased. The baboon improved after systemic and topical antibiotic therapy, but the lesion recurred after antibiotic treatment ...

Thirty-four patients with rheumatoid arthritis, aged 38 to 63 years (mean age 56 years), were studied before and after a 6-week stay in hospital. Twenty-three of these patients underwent special physical training twice a day during this period. Physical performance, cardio-respiratory fitness and muscle strength improved significantly in the training ...

Becoming fit means preparing ourselves to cope more effectively with environmental stresses. Exercise programs represent one approach to the fitness struggle. There are alternatives for those who find regular exercise unappealing - Yoga, biofeedback training or self hypnosis. At the moment these techniques appear unscientific and spooky - but they ...

The serum androgen response to physical exercise was studied in highly trained athletes and in normal male medical students. Serum androgens rose in response to maximal exercise and the rise was independent of serum luteinizing hormone. No response was obtained with submaximal exercise.

Much attention is being paid in the Soviet Union to the relationship between physical exercise, health and longevity. Many studies are conducted with the purpose of substantiating the hypothesis that physical activity has a positive effect on longevity while the lack of it shortens life. These studies are conducted in ...

Much attention is being paid in the Soviet Union to the relationship between physical exercise, health and longevity. Many studies are conducted with the purpose of substantiating the hypothesis that physical activity has a positive effect on longevity while the lack of it shortens life. These studies are conducted in ...

This resource contains authoritative and up to date information on exercise and physical fitness, with selected links to Web resources covering latest news, overviews, nutrition, specific conditions, related issues, health check tools, clinical trials, research, dictionaries and glossaries, organisations, statistics, newsletters, publications, and women's health. Some documents are PDF files, ...

Eight healthy mean were studied to evaluate the modifying effects of supine or sitting exercise or quiet sitting on the circulatory and metabolic consequences of prolonged bed rest. Four subjects remained at recumbent bed rest for 24 days except for 1 hour daily lying (2 subjects) or sitting (2 subjects) ...

Cardiac hypertrophy and extreme bradycardia occur in the highly trained endurance athlete, but not in those with lesser degrees of training. Several longevity studies in athletes fail to show any beneficial effects of athletic training confined to the college years. The invaluable British studies relating physical activity of various occupations ...