Effects of α-tocopherol, β-carotene and ascorbic acid on oxidative, hormonal and enzymatic exercise stress markers in habitual training activity of professional basketball players

Abstract

The results of the present study suggest that supplementation with alpha-tocopherol, beta-carotene and ascorbic acid might partially account for the hormonal and enzymatic stress marker profile observed during habitual training activity of professional basketball players.

Alpha-tocopherol supplementation prevents the exercise-induced reduction of serum paraoxonase 1/arylesterase activities in healthy individuals

“…Anerobic exercise has been associated with a substantial level of lactic acidosis in both blood and muscle (Packer, 1997) and with a major increase in plasma catecholamine levels (Schroder et al, 2001), resulting in a remarkably increased blood pressure and the almost twofold higher cardiac rate post-training can be attributed to the significant activity of the players' sympathetic system. In this study, TAS was remarkably decreased post-training in players without a-T supplementation, as reported by other authors (Alessio et al, 2000;Cooper et al, 2002).…”

“…If the increase in the level of oxygen free radicals exceeds the antioxidant defense capacity of the cells, then lipid peroxidation will occur (Schroder et al, 2001). It has been suggested that athletes undergoing strenuous training and competition may experience difficulties to maintain optimal tissue levels of vitamins, even if consuming the recommended daily allowances (Alessio et al, 2000).…”

“…Despite the association of PON 1/Aryl activities with prevention against LDL oxidation (Josse et al, 2001), the mechanism by which PON 1/Aryl inhibit the oxidation of LDL phospholipids is not clear. Hydroxygen peroxide at millipolar concentrations was observed to partially inactivate PON 1/Aryl (La Du, 1996;Schroder et al, 2001;Nguyen and Sok, 2001).…”

“…In addition, Schroder et al (2001) showed that the administration of the vitamin resulted in the avoidance of the development of oxidation.…”

Effects of acute twelve minute run test on oxidative stress and antioxidant enzyme activities

“…In a study, in which the effect of vitamin E re-enforcement on the exercise which composes oxidative stress has been searched, in the measurements after the exercise, a significant rise was found in CK value (Keong et al, 2006). Schröder et al (2001) expressed a significant increase in the LDH activity in basketballers after 24 h of the exercise.…”