Effects of training on the physiological responses to one- and two-leg

the physiological responses to unb- and two-leg work. J AppI. Physiol. 38(3) : 377-381. 1975,-The effects of training resulting from one-leg exercise on a stationary bicycle ergometer have been studied. Seven subjects were habituated to one- and two-leg progressive exercise tests on 11 successive days and were then trained for 60 min-day--f. (30 min each leg) 3 times per wk for 5-6 wk at ~80 y0 of their one-Ieg vo, mnx. %&,nx increased (P < 0.05) by ~14 I mmin-l and 902 lnax by-0.34 1. *min-l (+ 14%; P < 0.05) in one-leg exercise. This latter increase was not, however, reflected in the two-leg vo2 max which only in-creased I45 ml l min- l (4.7 yU). It was concluded that training is specific and in one-leg work the phenomenon is mainly peripheral in origin, but in two-leg work the limitation to maximal exercise is still provided by the capacity of the central cardiovascular system to transport oxygen to a given effective muscle mass