Table 3.

Cardiac oxidative stress enzyme activity.

Variables	S (n = 8)	C (n = 8)	HIT (n = 8)
LH (nmol/mg of tissue)	251 ± 30.9	249 ± 55.7	186 ± 39.9∗#
CAT (μmol/g)	80.4 ± 11.5	86.5 ± 9.7	119 ± 15.7∗#
GSH-Px (nmol/mg)	22.5 ± 4.9	33.1 ± 2.9∗	41.1 ± 7.7∗#

S: sedentary control animals; C: continuous moderate intensity training; HIT: high-intensity interval training; LH: lipid hydroperoxide; CAT: catalase; GSH-Px: glutathione peroxidase. Data are expressed as mean ± SD. ^∗P < 0.05 versus S; ^#P < 0.05 versus C.