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The levels of vitamin D during 6 weeks of interval exercise training (IET) and vitamin D supplementation treatment in all experimental groups. H.C, healthy control group; Ca.C, cancer control group; Ca.VD, cancer with injection of vitamin D group; Ca.Ex, cancer exercise training group; Ca.Ex.VD, cancer exercise training with injection of vitamin D group. Data are presented as mean ± SD. ∗Significant level (P ≤ 0.05).
