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Background: the aim of this study was to analyze the chronobiology influence on the mechanical, kinematic, and physiological variables in a mountain bike (MTB) time trial.
Methods:
Chronic mountain sickness (CMS) is a disease that affects many high-altitude dwellers, particularly in the Andean Mountains in South America. The hallmark symptom of CMS is polycythemia, which causes increased risk of pulmonary hypertension and stroke (among other symptoms). A prevailing hypothesis
Different aspects of epidemiology of stroke were studied in residents of 2 adjacent geographic zones: USSR and Eastern Slovak Carpathian. A total of 385 cerebral stroke patients were studied in the USSR and 345 in Eastern Slovakia. Risk factors were determined. Cerebral serial angiography revealed
OBJECTIVE
Several previous studies evaluated the cardiovascular risk associated with exercise, but only a few papers considered this risk during physical activity in the mountains. The aim of this study was to assess the cardiovascular risk in a population practising physical activity in the
OBJECTIVE
Racial and rural-urban differences in stroke were previously reported in demographically and socioeconomically heterogeneous populations. However, it is not clear whether they exist in more homogeneous populations. Compared to the rest of the United States, the Appalachian region is highly
The key elements in acclimatization aim at securing the oxygen supply to tissues and organs of the body with an optimal oxygen tension of the arterial blood. In acute exposure, ventilation and heart rate are elevated with a minimum reduction in stroke volume. In addition, plasma volume is reduced
Investigations on the cardiac function consequences of mountain ultramarathon (MUM) >100 h are lacking. The present study assessed the progressive cardiac responses during the world's most challenging MUM (Tor des Géants; Italy; 330 km; 24,000 m of cumulative elevation gain). Resting
OBJECTIVE
To evaluate the association between open-angle glaucoma (termed glaucoma) and 9-year mortality in an older population-based cohort.
METHODS
Population-based cohort.
METHODS
Three thousand six hundred fifty-four persons aged 49 to 97 years (82.4% of the eligible population), residents of
As high altitude travel increases, acute mountain sickness (AMS) and life threatening high altitude cerebral oedema (HACE) are becoming more prevalent. Acute mountain sickness occurs in 45% of lowlanders above 4250 m. Predisposing factors are still unknown and its development is more complex than
OBJECTIVE
To describe temporal changes in the characteristics of older persons with visual impairment in their better eye correctable by refraction.
METHODS
Study of two cross sections of a community 6 years apart.
METHODS
The Blue Mountains Eye Study examined 3654 persons aged 49 to 97 during 1992
According to most studies, persons living or being born at higher altitude have a lower risk of fatal myocardial infarction or stroke than lowlanders. The altitude effect is more pronounced for myocardial infarction than for stroke and generally stronger in men than in women. Possibly, exposure to a
The aim of this study was to describe the prevalence of eyelid ectropion and its associations with sunlight-related and other ocular variables, plus systemic factors, in an older Australian population. The Blue Mountains Eye Study examined 3654 persons aged 49-97 years. Examination recorded
OBJECTIVE
To determine the prevalence and associations of retinal vein occlusion (RVO) in a defined older Australian population.
METHODS
Participants (N = 3654; age, > or = 49 years), representing 88% of the permanent residents from an area west of Sydney, Australia, underwent a detailed eye
It was found that in practically healthy inhabitants of Alpine regions the real oxygen transport is maintained by hyperdynamic regimen of blood circulation, main role in its creation belonging to growth of the stroke volume. The estimation of changing hemodynamics parameters performed by the method