Heavy Resistance Training and Peri-Exercise Ingestion of a Multi-Ingredient Ergogenic Nutritional Supplement in Males: Effects on Body Composition, Muscle Performance and Markers of Muscle Protein Synthesis

Table 5. Serum variables before and after SizeOn maximum performance supplementation and resistance training. Values are means (±SD).

Variable	Group	Day 0	Day 43	Group (p ≤ .05)	Test (p ≤ .05)	Group x Test (p ≤ .05)
Insulin (µIU·ml^–1)	SIZE	18.84 (5.57)	21.1 (7.4)	.905	.760	.433
Insulin (µIU·ml^–1)	PCC	20.22 (10.72)	19.2 (4.2)	.905	.760	.433
IGF-1 (pg·ml^–1)	SIZE	3317.9 (740.4)	3207.6 (822.7)	.361	.950	.750
IGF-1 (pg·ml^–1)	PCC	3491.4 (1267.8)	3565.5 (1215.5)	.361	.950	.750
HGH (pg·ml^–1)	SIZE	206.8 (277.7)	275.9 (281.3)	.169	.819	.891
HGH (pg·ml^–1)	PCC	229.8 (280.3)	277.1 (245.1)	.169	.819	.891
Cortisol (pg·ml^–1)	SIZE	3120.8 (204.7)	3051.9 (160.6)	.608	.182	.727
Cortisol (pg·ml^–1)	PCC	3109.5 (214.0)	2992.4 (362.4)	.608	.182	.727

Serum variables for the PCC (n = 12) and SIZE (n = 12) groups. There were no significant differences associated with resistance training (p > 0.05) or supplementation (p > 0.05).