Physical fitness and plasma non-enzymatic antioxidant status at rest and after a wingate test.
We tested seven physical education students whether 30-s sprint anaerobic exercise (Wingate test) would result in oxidative stress (evaluated by lipid radical levels) sufficient to alter plasma non-enzymatic antioxidant status (plasma uric acid, ascorbic acid, alpha-tocopherol, beta-carotene). This study demonstrates that 1) Wingate test increases plasma uric and ascorbic acid concentrations (p <.05), and decreases plasma alpha-tocopherol and beta-carotene levels (p <.05); 2) lipid radical levels at rest and sprint performance are negatively correlated with resting plasma uric acid and alpha-tocopherol concentrations (p <.05). In conclusion, this study 1) demonstrates that a 30-s sprint anaerobic exercise is associated with acute changes in plasma non-enzymatic antioxidant status, 2) indicates that the subjects with largest leg peak power are those who exhibit the lowest plasma antioxidant status at rest (uric acid and alpha-tocopherol), 3) and suggests that antioxidant intake by maintaining plasma antioxidant concentration at rest in the normal range might protect athletes against oxidative stress induced by exercise.
Groussard
Carole
C
Laboratoire de Physiologie et de Biomechanique de l'Exercice Musculataire, UFRAPS, University de Rennes 2, Rennes Cedex, France.
Machefer
Guillaume
G
Rannou
FrançOise
F
Faure
Henri
H
Zouhal
Hassane
H
Sergent
Odile
O
Chevanne
Martine
M
Cillard
Josiane
J
Gratas-Delamarche
Arlette
A
D000328:Adult; D000704:Analysis of Variance; D000975:Antioxidants / Q000378:metabolism*; D001205:Ascorbic Acid / Q000097:blood; D001642:Bicycling / Q000502:physiology; D005080:Exercise Test; D006801:Humans; D007773:Lactates / Q000097:blood; D008297:Male; D018384:Oxidative Stress; D010809:Physical Fitness; D014527:Uric Acid / Q000097:blood; D024502:alpha-Tocopherol / Q000097:blood; D019207:beta Carotene / Q000097:blood
D000975:Antioxidants; D007773:Lactates; D019207:beta Carotene; D014527:Uric Acid; D024502:alpha-Tocopherol; D001205:Ascorbic Acid