Table 2. Osteocalcin, CTX-1 and irisin level in serum at the end of experiment.
Osteocalcin (pg/ml) CTX-1 (ng/ml) Irisin (ng/ml)
CD 0.141 ± 0.008 0.119 ± 0.008 2.129 ± 0.089
HFD 0.097 ± 0.007* 0.179 ± 0.01* 1.377 ± 0.113*
HEx 0.124 ± 0.011†  0.143 ± 0.018†  1.922 ± 0.213† 
* p < 0.05 vs. ND groupData are presented as mean ± SE.†  p < 0.05 vs. HFD group by one way ANOVA. CD, control diet; HFD, high-fat diet; HEx, high-fat diet and swimming exercise; CTX-1, C-telopeptide of type I collagen.