(1.School of Physical Education & Health,East China Normal University,Shanghai 200241,China;2.School of Physical Education,China University of Mining and Technology,Xuzhou 221116,China) Abstract: By using a load bearing ladder climbing model to conduct anti-resistance training, the authors observed the effects of age and anti-resistance training on the weight, SI and skeletal muscle oxidation stress of SAMP-8 mice. 40 male SAMP-8 mice were randomly divided into a youth calm (YC) group, a youth anti-resistance (YR) group, an old calm (OC) group, and an old anti-resistance (OR) group. The anti-resistance groups performed ladder climbing for 8 weeks, 3 times a week. The authors measured the T-AOC, SOD activity and MDA content by means of colorimetry, and measured the content of 8-OH-dG by using an ELISA kit. Results: there was no significant dif-ference in weight between mice in various groups, while the SI of mice in the YC group was significantly higher than that of mice in the OC group (P<0.05), and there was no significant difference in SI between mice in other groups; the total SOD activity and T-AOC of mice in the YC group were higher than those of mice in the OC group (P<0.05), the total SOD activity and T-AOC of mice in the YR group were significantly lower than those of mice in the YC group (P<0.05), while the total SOD activity of mice in the OR group was higher than that of mice in the OC group (P<0.05), yet the T-AOC of mice in the OR group was lower than that of mice in the OC group (P<0.05); the concentration of 8-OH-dG of mice in the OC group was significantly higher than that of mice in the YC group (P<0.05), and there was no significant difference in the concentration of 8-OH-dG of mice in the YC group and YR group, while the concentration of 8-OH-dG of mice in the OR group was significantly lower than that of mice in the OC group (P<0.05), the MDA concentration of mice in the YC group was lower than that of mice in the OC group (P<0.05), and the MDA activity of mice in the YR group and OR group was lower than that of mice in the YC group and OC group (P<0.05). The results indicated the followings: 1) in the process of aging, there was no significant change to the weight of SAMP-8 mice, yet there was a significant change to SI, which showed the characteristics of sarcopenia, while the anti-resistance exercise had no effect on the change of the weight and skeletal muscle quality; 2) when aging, skeletal muscles’ anti-oxidation performance lowered significantly, yet their oxidative damage in-creased significantly; such a condition can be significantly reversed by anti-resistance training. Key words: sports biochemistry;sarcopenia;anti-resistance training;DNA damage;8-OH-dG |