Swim exercise training and adaptations in the antioxidant defense system of myocardium of old rats: relationship to swim intensity and duration

We examined a suitable swim program of different intensities and durations that could evoke changes in the myocardial antioxidant capacity in 22-month-old rats. Male rats ( Rattus norvegicus) were assigned to either a sedentary control (SE-C) group or one of six trainee groups. Animals were swim-exe...

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Published in:Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology 2004-02, Vol.137 (2), p.187-196
Main Authors: Ravi Kiran, T, Subramanyam, M.V.V, Asha Devi, S
Format: Article
Language:English
Subjects:
Adaptation, Physiological - physiology
Age Factors
Animals
Antioxidants - metabolism
Cholesterol
Cholesterol - blood
Cholesterol, HDL - blood
Cholesterol, LDL - blood
Endurance
Exercise
Lactate
Lactic Acid - blood
Lipid Peroxidation - physiology
Lipofuscin
Lipofuscin - metabolism
Male
Malondialdehyde - metabolism
Myocardium
Myocardium - metabolism
Oxidative Stress - physiology
Physical Conditioning, Animal
Physical Endurance - physiology
Rats
Rats, Wistar
Superoxide dismutase
Superoxide Dismutase - metabolism
Triglyceride
Triglycerides - blood
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Summary:We examined a suitable swim program of different intensities and durations that could evoke changes in the myocardial antioxidant capacity in 22-month-old rats. Male rats ( Rattus norvegicus) were assigned to either a sedentary control (SE-C) group or one of six trainee groups. Animals were swim-exercised for 4 weeks with either 20 min or 40 min/day, and three intensities, low, moderate and high. Low-intensity at 20 min/day elicited maximum swim velocity ( S v ) and endurance capacity ( P
ISSN:1096-4959
1879-1107
DOI:10.1016/j.cbpc.2003.11.002