(a) Exercise data in which muscle MGF levels were determined in elderly men; some receiving exercise only and another group exercise with GH and in which biopsies were taken and MGF levels were measured and compared with muscle cross-sectional area and strength. (b) shows the relationship between the induced levels of MGF and the increased strength in the experiments presented in (a). (c) presents on the left side the change in muscle cross-sectional area after exercise combined with GH treatment and increased MGF expression in elderly men. On the right are two scans showing the difference when exercise is combined (top right) or not combined with GH treatment (bottom left). See Hameed et al. [28].
