Rapid suppression of LPP1 expression in rat soleus caused by 12 hours of physical inactivity is not restored by treadmill exercise 4 hours after beginning exercise. Results are expressed relative to ambulatory control rat values. Results for two sets of probes on the U34A microarray are presented. Probe set nomenclature is from Affymetrix.com. Results are expressed as mean ± SE. * vs. Ambulatory Control, p < 0.05.