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Table 2 Participants’ dietary intake and antioxidant profile during the adaptive and experimental period

From: Effect of whey vs. soy protein supplementation on recovery kinetics following speed endurance training in competitive male soccer players: a randomized controlled trial

  Placebo Whey Soy
Diet Supplement Total Diet Supplement Total Diet Supplement Total
Daily energy intake
kcal/day 1971.9 ± 446.4 236.0 ± 0.0 2207.9 ± 446.4 1957.6 ± 539.2 231.9 ± 0.00 2189.5 ± 539.2 2028.1 ± 376.6 233.1 ± 0.0 2261.2 ± 376.6
Carbohydrate intake
g/kg body mass 2.87 ± 0.6 0.74 ± 0.06 3.62 ± 0.6 2.98 ± 0.8 0.0 ± 0.0 2.98 ± 0.8 3.05 ± 0.6 0.04 ± 0.0 3.09 ± 0.6
% of total energy intake 46.2 ± 3.4 11.0 ± 2.11 52.0 ± 3.4 48.3 ± 3.0 0.0 ± 0.0 43.2 ± 3.0 47.7 ± 3.2 0.50 ± 0.0 43.4 ± 3.2
Protein intake
g/kg body mass 0.81 ± 0.05 0.0 ± 0.0 0.81 ± 0.05 0.83 ± 0.2 0.69 ± 0.06 1.52 ± 0.2a 0.82 ± 0.1 0.68 ± 0.06 1.51 ± 0.2b
% of total energy intake 13.0 ± 2.50 0.0 ± 0.0 11.6 ± 2.50 13.4 ± 1.4 10.5 ± 2.50 22.0 ± 2.9a 12.8 ± 1.0 9.8 ± 1.8 21.2 ± 1.5b
Fat intake
g/kg body mass 1.13 ± 0.3 0.0 ± 0.0 1.13 ± 0.3 1.05 ± 0.2 0.01 ± 0.00 1.07 ± 0.2 1.12 ± 0.2 0.00 ± 0.00 1.12 ± 0.2
% of total energy intake 40.8 ± 4.4 0.0 ± 0.0 36.4 ± 4.4 38.3 ± 3.7 0.6 ± 0.1 34.8 ± 3.7 39.5 ± 3.3 0.12 ± 0.01 35.4 ± 3.4
Selenium (μg/day) c 50.1 ± 11.2
Zinc (mg/day) c 11.5 ± 1.90
Vitamin C (mg/day) c 117.0 ± 17.20
Vitamin E (mg/day, α-TE) c 8.4 ± 2.0
  1. aSignificant difference between Whey and Placebo at P < 0.05. bSignificant difference between Soy and Placebo at P < 0.05. cDaily intake of these compounds was comparable among trials
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