TY - JOUR
T1 - Effect of cold acclimation on antioxidant status in cold acclimated skaters
AU - Jung, Hee Hong
AU - Ki, Jin Kim
AU - Suzuki, Katsuhiko
AU - Lee, In Seon
N1 - Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.
PY - 2008
Y1 - 2008
N2 - We investigated whether cold acclimation leads to increased activity of the antioxidant defense enzymes and muscle injury. Comparisons were between short track skaters (n=6) and inline skaters (n=6) during rest and at submaximal cycling (65% VO2max) in cold (ambient temperature: 5±1°C, relative humidity: 41±8%) and warm conditions (ambient temperature: 21±1°C, relative humidity: 35±5%), during 60 min, respectively, and during the recovery phase. Erythrocyte superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSHpx), reduced glutathione (GSH), thiobarbituric substance acid (TBARS), serum creatine kinase (CK), lactate dehydrogenase (LDH), plasma myoglobin (Mb) and cortisol were determined. Activities of CAT and GSHpx and the level of GSH and TBARS in erythrocyte and the level of LDH in serum were elevated in cold acclimated subjects. We suggested that the compensatory increase in antioxidative defense enzymes resulting from long-term cold exposure may reflect the elevated reactive oxygen species (ROS) production and muscle injury at this environment acclimation.
AB - We investigated whether cold acclimation leads to increased activity of the antioxidant defense enzymes and muscle injury. Comparisons were between short track skaters (n=6) and inline skaters (n=6) during rest and at submaximal cycling (65% VO2max) in cold (ambient temperature: 5±1°C, relative humidity: 41±8%) and warm conditions (ambient temperature: 21±1°C, relative humidity: 35±5%), during 60 min, respectively, and during the recovery phase. Erythrocyte superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSHpx), reduced glutathione (GSH), thiobarbituric substance acid (TBARS), serum creatine kinase (CK), lactate dehydrogenase (LDH), plasma myoglobin (Mb) and cortisol were determined. Activities of CAT and GSHpx and the level of GSH and TBARS in erythrocyte and the level of LDH in serum were elevated in cold acclimated subjects. We suggested that the compensatory increase in antioxidative defense enzymes resulting from long-term cold exposure may reflect the elevated reactive oxygen species (ROS) production and muscle injury at this environment acclimation.
KW - Antioxidant defense enzymes
KW - Cold acclimation
KW - Muscle injury
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U2 - 10.2114/jpa2.27.255
DO - 10.2114/jpa2.27.255
M3 - Article
C2 - 18838841
AN - SCOPUS:57349107722
VL - 27
SP - 255
EP - 262
JO - Journal of Physiological Anthropology
JF - Journal of Physiological Anthropology
SN - 1880-6791
IS - 5
ER -