Figure 4.

Increase in glycogen accumulation after exercise. Glycogen was assessed in quadriceps muscle biopsies from both legs of each of 2 subjects after one-legged cycling exercise to exhaustion. Glycogen content is shown for exercised (solid lines) and control (dashed lines) legs. Reprinted with permission from Bergström J, Hultman E. Muscle glycogen synthesis after exercise: an enhancing factor localized to the muscle cells in man. Nature. 1966;210:309–310. Copyright 1966, Macmillan Publishers Ltd.