Relation of Moderate Physical Activity to Blood Markers of Oxidative Stress and Antioxidant Defense in the Elderly

Table 2

Antioxidant enzyme activities in the blood in the examined groups ().

Enzyme	65-75 years		90-99 years
	YN ()	YA ()	ON ()	OA ()
Catalase (CAT) (U/g Hb)	^A,E	^B
Superoxide dismutase (SOD) (U/g Hb)	^A	^C
Glutathione peroxidase (GPx) (U/g Hb)	^A,E		^B
Glutathione reductase (GR) (U/g Hb)	^A	^D
Superoxide dismutase/glutathione peroxidase (SOD/GPx) ratio	^A	^D

^ASignificantly lower in the comparison of YN vs. YA, . ^BSignificantly lower in the comparison of YN vs. ON, . ^CSignificantly higher in the comparison of OA vs. YA, . ^DSignificantly higher in the comparison of OA vs YA, . ^ESignificantly lower in the comparison of YN vs. ON, .