Defining anaemia and its effect on physical work capacity at high altitudes in the Bolivian Andes

Abstract

Of all the ecozones in the tropics, one of the most challenging in terms of its effects on physical work capacity is found in the high altitude mountains. Not only does one have to contend with many of the health and nutritional problems associated with underdevelopment but one also has to adjust to the reduced atmospheric pressure and partial pressure of oxygen associated with high elevations. Since oxygen is required for all aerobic work, a reduction in oxygen tension will reduce aerobic work capacity unless substantial adaptations occur in systemic oxygen transport and utilisation.