Coronary heart disease and physical activity - a fresh look

Incidences of fatal coronary heart disease in White South African males increased significantly between 1951 and 1970. In those under 60 years of age, the incidence exceeds that in USA. Prevention lies in the early recognition of raised blood lipids and hypertension, and in stopping smoking. The role of physical inactivity is less certain. The physiological knowledge needed for determining the correct speed of walking and running is proposed.S. Afr. Med. J., 48, 571 (1974)

The problem of coronary heart disease with special reference to the influence of physical activity

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Physiological problems expected at the Mexico City olympic games

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Mechanical efficiency of a champion walker

Oxygen consumptions were measured on a champion walker, while walking at between 6·4 and 16·9 km / hand while running at between 11.3 and 17.7 km/h. Above 9.7 km /h the curve of oxygen consumption against speed for walking was almost twice as steep as that for running, indicating that even champion walkers are more efficient, mechanically. when running than when walking abol'e 9·7 km/h. The curve for the champion walker was less steep than that for m'!n walking in the normal way above 9-7 km/ h indicating that the technique of 'rolling the pelvis gives competition walkers greater mechanical efficiency. It was also found that the VO2max of the champion walker was higher when running than I"hen walking

The capacity for maximum physical effort of caucasian and bantu athletes of international class

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The cap city for physical work of white miners in South Africa

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24-hour metabolisms of sedentary people

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The influence of water restriction on the performance of men during a prolonged March

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The possible effect on athletic performances of Mexico City's altitude

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