PURPOSE: The purpose of this study was to investigate the effect of resistance ladder exercise on myocardial inflammatory cytokines and extracellular signal regulated kinase (ERK)1/2 expression in type 2 diabetic rats.METHODS: A total of 21 8-week-old male Long Evans Tokushima Otsuka (LETO) and Otsuka Long Evans Tokushima Fatty (OLETF) rats were divided into three groups: LETO group (CON, n=7), OLETF group (DM, n=7), and resistance exercise group (DM+EXE, n=7). Resistance exercise referred to a climbing exercise on a slope. The rats performed this exercise 3 full d per week, for 8 week. The expression of myocardial inflammatory cytokines and ERK1/2 was analyzed via western blotting after 8 week of exercise intervention.RESULTS: After 8 weeks of resistance exercise for the management of type 2 diabetes, the production of anti-inflammatory factor Interleukin (IL)-10 in the myocardium increased. This inhibited the production of pro-inflammatory factors IL-6 and tumor necrosis factor-alpha. However, resistance exercise did not affect the expression of ERK1 and ERK2, which are apoptosis regulatory proteins.CONCLUSIONS: In type 2 diabetes, resistance exercise is thought to be effective in reducing inflammatory factors by mediating cytokines. Although the effects of resistance ladder exercise were confirmed, further studies on a variety of exercise types and intensities should be conducted to prevent and improve the conditions of those with diabetes.
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