PURPOSE: To analyze the association between adequate carbohydrate and protein intake with the maximal dynamic strength in bench press and deadlift in university athletes.
METHODS: 30 male college (soccer and fast-soccer) athletes were evaluated. A 24-h dietary recall was administered to determine the macronutrient intake. Carbohydrate (CHO) and protein (PRO) intake were calculated and adjusted for body mass (g/ kg/ day). Consumption was classified as \"adequate\" if the athlete consumed the minimum amounts recommended for each macronutrient: 5 g/kg/day of CHO, 1.2 g/kg/day of PRO. Bench press and deadlift one repetition (1RM) tests were performed to determine the maximal dynamic strength. 1RM was adjusted for body mass (kg lifted/kg body mass). The association between macronutrient intake and 1RM was tested with linear regression. A sub-analysis was performed with the subject’s categorization according to their CHO and PRO adequacy.
RESULTS: Neither g/d nor g/kg/d of CHO nor PRO were significantly associated with 1RM bench press nor deadlift. When participants were selected for their CHO (n=18) and PRO (n=29) adequacy there were no significant associations between CHO with 1RM of bench press (p = 0.763) and deadlift (p = 0.397). PRO showed the same pattern with no significant associations with bench press (p = 0.595) and deadlift (p = 0.912).
CONCLUSIONS: No association was observed between the adequate carbohydrate and protein intake with the 1RM of bench press and deadlift in university soccer players.

Table 1. Association of carbohydrate and protein intake with maximal dynamic strength.

	Bench press	Deadlift
b (95% CI)	p-value	b (95% CI)	p-value
Protein (g/kg/d)	0.075 (-3.874 to 5.652)	0.704	0.023 (-7.154 to 8.036)	0.906
Protein (g/d)	0.145 (-0.430 to 0.920)	0.461	0.130 (-0.750 to 0.147)	0.511
Carbohydrate (g/kg/d)	0.176 (-1.438 to 3.731)	0.370	0.101 (-3.084 to 5.147)	0.611
Carbohydrate (g/d)	0.255 ( -0.110 to 0.540)	0.191	0.233 (-0.220 to 0.086)	0.234