It is well known that altitude training stimulates erythropoiesis, but only few data are available concerning the direct altitude effect on red blood cell volume (RCV) in world class endurance athletes during exposure to continued hypoxia. The purpose of this study was to evaluate the impact of three weeks of traditional altitude training at 2050 m on total hemoglobin mass (tHb), RCV and erythr...

Moderate-altitude living (2,500 m), combined with low-altitude training (1,250 m) (i.e., live high-train low), results in a significantly greater improvement in maximal O2 uptake (V(02)max) and performance over equivalent sea-level training. Although the mean improvement in group response with this "high-low" training model is clear, the individual response displays a wide variability. To deter...

OBJECTIVES We investigated the effect of high altitude on the match activity profile of elite youth high altitude and sea level residents. METHODS Twenty Sea Level (Australian) and 19 Altitude-resident (Bolivian) soccer players played five games, two near sea level (430 m) and three in La Paz (3600 m). Match activity profile was quantified via global positioning system with the peak 5 min per...

INTRODUCTION Following the dominance of altitude acclimatised athletes during the 1968 Olympic Games held in Mexico City (2400 m), and early anecdotal training experiments in the USA in the 1970s, altitude (hypoxic) training has become very popular among individual endurance athletes including marathon runners, cyclists, swimmers and triathletes. Altitude training is used to further enhance exe...

UNLABELLED The concept of frame size has not undergone a thorough evaluation in non-Caucasian populations. Using data from the Central Asia High Altitude Population (CAHAP) study, we tested whether: (1) the relationship between frame size and body composition is different in high-, medium- and low-altitude populations; (2) elbow breadth is a better index of frame size than biacromial and biilia...

The low atmospheric pressure and low oxygen content in high-altitude environment have great impacts on the functions of human body. Especially for the personnel engaged in complicated physical labor such as tunnel construction, high altitude can cause a series of adverse physiological reactions, which may result in multiple high-altitude diseases and even death in severe cases. Artificial oxyge...

The objective of this work was to study the effect of high altitude on full term birth weight, body shape and body composition of newborn infants. Twenty five healthy pregnant Saudi women and their healthy newborns from high altitude (2850-3150 m) and equal numbers from low altitude (500 m). For each pregnant woman haemoglobin concentration, haematocrit value and blood pressures were measured a...

The internationalism of field-based team sports (TS) such as football and rugby requires teams to compete in tournaments held at low to moderate altitude (∼1200-2500 m). In TS, acceleration, speed and aerobic endurance are physical characteristics associated with ball possession and, ultimately, scoring. While these qualities are affected by the development of neuromuscular fatigue at sea level...

In an article published in a recent issue of the European Respiratory Journal, DEHNERT et al. [1] report various measurements made after climbing at high altitude. Among them were carbon monoxide (CO) transfer measurements. I was surprised by the finding of an increase in the transfer factor of the lung for CO (TL,CO) at altitude, as an article presently in press [2], already published in abstr...

The physiologic effects of high altitude on patients with cardiovascular disease are qualitatively equal to those occurring in healthy individuals, but they may differ in magnitude or with regard to the clinical impact. In healthy individuals, altitudes above 2,500 m cause hypoxemia to a degree that it leads to a noticeable reduction in aerobic capacity and an increased activity of the sympathe...