Comparison the effect of four weeks continuous and interval exercise training on serum and muscular levels of irisin in breast cancer bearing mice
Irisin is one of the skeletal muscle secreted myokine that can affect the growth of cancer cells and influence the muscular tissue changes. In the present study, the effect of four weeks continuous and interval exercise training on serum and muscular levels of irisin in breast cancer bearing mice were investigated.
The 32 female Balb/c mice assigned in four group with eight mice including: healthy control, tumor control, interval training+tumor and continuous training+tumor groups. In order to induce breast cancer, MC4-L2 cell line were used. Interval and continuous exercise training program conducted in four weeks and five sessions per week. The 48 hours after last exercise training session, blood samples and gastrocnemius muscle tissue were isolated and used for measurement of irisin levels by ELISA method. Data analyze performed by one-way analysis of variance test and Tukey post-hock test and significant considered at p≤0.05.
Significant increase of irisin serum levels in continuous (p=0.002) and interval (p=0.011) training group compared to tumor control group was observed. Tumor volume significantly decreased in continuous and interval training group (p>0.05), but not significant changes in gastrocnemius muscle weight observed after continuous and interval training (p>0.05).
According to present study findings, the observed antitumor effects of continuous and interval training can partly attribute to increase in irisin levels and there is no significant difference between continuous and interval exercise training
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