Effect of Physical Exercise on Blood Plasma Total Antioxidant Capacity

Effect of Physical Exercise on Blood Plasma Total Antioxidant Capacity 

Data suggest that extensive physical exercise may increase blood plasma TAC. Long-term effects of systematic physical exercise are, however, controversial. Sub-maximal exercise (30 min) was reported not to alter blood plasma TAC significantly (A7). TAC of blood plasma was reported to increase immediately after a marathon run (by 25%) and this increase persisted 4 days later (by 12%) (L19). Similar effects (increase by 19%) were noted after a half-marathon (C29). Another study reported an increase in blood serum TAC by 22% during a 31-km run and by 16% during a marathon (V10). TAC of blood plasma was increased by 25% after a maximum aerobic exercise test and by 9% after a nonaerobic isometric exercise test (A8). Eccentric muscle exercise (70 maximal voluntary eccentric muscle actions on an isokinetic dynamometer, using the knee extensors of a single leg) did not affect blood serum TAC (C27). In another study, TAC increased after exhaustive aerobic (by 25%) and nonaerobic isometric exercise (by 9%) (A8). 

Intense 2-day dry land training by elite alpine ski racers (routine training) decreased. TAC of their blood plasma (S28). Military activities at moderate altitudes (about 3000 m above sea level) involving strenuous work (ca. 23 MJ/day) for up to 2 weeks did not affect TAC of blood plasma of male volunteers (C22). Adolescent (12-14 years) high-competition swimmers who trained more than 20 hr/week did not show any differences in blood plasma TAC with respect to controls who did 

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