DNA damage in lymphocytes (%DNAT)   Competitive Rowers n=12 PE Students n=11 P value Pre-exercise 8.32 ± 0.51 5.99 ± 0.52 <0.001 24 h After-exercise 15.31 ± 0.67 12.95 ± 0.49 < 0.001 Vit. E Supplementation       Pre-exercise 6.27 ± 0.47 5.65 ± 0.47 < 0.001 24 h After-exercise 13.90 ± 1.01 12.19 ± 0.53 < 0.001

Table 2: The percentage of DNA in tail (%DNAT) in lymphocytes of competitive rowers, and physical education (PE) students prior to exercise, 24 hours after exercise and after 2 months of vitamin E supplementation (400 IU/day), expressed as Mean ± SD.