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Original

DNA damage in response to an Ironman triathlon

, , , , , , , & show all
Pages 753-760 | Received 15 Oct 2008, Published online: 19 Jan 2010
 

Abstract

The major aims of this study were to investigate the effect of an Ironman triathlon on DNA migration in the single cell gel electrophoresis assay, apoptosis and necrosis in the cytokinesis-block micronucleus cytome assay with lymphocytes and on changes of total antioxidant capacity in plasma. Blood samples were taken 2 days (d) before, within 20 min, 1 d, 5 d and 19 d post-race. The level of strand breaks decreased (p<0.05) immediately after the race, then increased (p<0.01) 1 d post-race and declined (p<0.01) until 19 d post-race. Apoptotic and necrotic cells decreased (p<0.01) and the total antioxidant status increased (p<0.01) immediately after the race. The results indicate that ultra-endurance exercise does not cause prolonged DNA damage in well-trained male athletes.

Abbreviations
ROS=

reactive oxygen species

SCGE=

single cell gel electrophoresis

8-OHdG=

8-hydroxy-2′-deoxyguanosine

MNi=

micronuclei

CBMN Cyt=

cytokinesis-block micronucleus cytome

BMI=

body mass index

RDA=

recommended dietary allowance

FRAP=

ferric reducing ability of plasma

ORAC=

oxygen radical absorbance capacity

Abbreviations
ROS=

reactive oxygen species

SCGE=

single cell gel electrophoresis

8-OHdG=

8-hydroxy-2′-deoxyguanosine

MNi=

micronuclei

CBMN Cyt=

cytokinesis-block micronucleus cytome

BMI=

body mass index

RDA=

recommended dietary allowance

FRAP=

ferric reducing ability of plasma

ORAC=

oxygen radical absorbance capacity

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