Effect of Low-Intensity Aerobic Exercise on Insulin-Like Growth Factor-I and Insulin-Like Growth Factor-Binding Proteins in Healthy Men

Table 2

Metabolic parameters: IGF-I, IGFBP-1, and, IGFB-3 before and after mild training.

	Before training	After training
𝑛	14	14
Basal glucose (mg/dL)	93.0 ± 1.0	90.3±1.3^∗
Basal insulin (𝜇U/mL)	4.7 ± 0.2	4.1±0.2^∗
IRI (𝜇U· mL^−1·mg· dL^−1)	1.08 ± 0.06	0.91±0.05^∗
SI (×10^−5·min· 𝜇U· mL^−1)	16.2 ± 1.5	19.5±1.4^∗
Leptin (ng/mL)	1.9 ± 0.3	1.7 ± 0.1
IGF-I (ng/mL)	245 ± 28	223±22^∗
IGFBP-1 (ng/mL)	39.4 ± 2.8	45.7±3.8^∗
IGFBP-3 (ng/mL)	2665 ± 129	2583 ±110

Values are the means ± SE. IRI, insulin resistance index;S_I, insulin sensitivity; IGF-I, insulin-like growth factor-I; IGFBP, IGF-binding protein. ^∗𝑃<.05 versus before training.