Histological analysis of the medial gastrocnemius muscle in young healthy children.

However, in the 2–4 age group, type I relative contribution was higher (+19%, p = 0.190) and type IIa relative contribution was lower (−37%, p = 0.095) in girls compared to boys, but failed to reach statistical significance. 3.3 Capillarization Representative examples of capillaries stained with CD31 in combination with MHC staining for type I in the MG muscle are depicted in Figure 5 for boys and girls according to age range.

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The CFPE index for type I was 1.3 fold higher in the 8–10 age group compared to the 2–4 age group, however this failed to reach significance, and the same was seen for the CFPE index of type II fibers ( Table 3 ).

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