The foot and leg in running sports

30 seconds of maximal cycling exercise (MacDonald et al, 1983). This may be a result of a larger muscle mass being utilised during sprint running as compared to sprint cycling. The disturbance to blood glucose was particularly marked when one considers that the subjects were running for only 30 seconds. This may be a reflection of the influence of exercise-induced increases in catecholami-ne concentration (MacDonald et al, 1983; Brooks et al, 1985).