In Sahlin's studies in 1986, he indicated that ATP stores of energy are limited. At
very high intensities, the ATP available to a cell would only last one or two seconds. But
although cellular ATP stores are limited, they may be regenerated by other metabolic
processes in the cells, including anaerobic glycolysis and oxidative metabolism. For
example Sahlin determined that ATP supported by anaerobic glycolysis lasted typically
seven minutes. A'it> is generated more slowly by oxidative processes.