Figure 2. LPL activity in different muscle fibre types after 12 h inactivity compared with low-intensity ambulatory activity.

HR-LPL activity was determined in a slow twitch red (STR) soleus (n = 35), fast twitch red (FTR) deep quadriceps (n = 7) and fast twitch white (FTW) or superficial white region of rectus femoris (n = 6) and the diaphragm, which is a mixed skeletal muscle with continual activity (n = 7). *P < 0.01, †P < 0.05 between HU and low-intensity ambulatory control. LPL activity between all three hindlimb muscles was significantly different in controls but not after HU removed the normal contractile activity.