摘要：The purpose of thisstudy was to investigate the effects of soy protein supplementationto improve performance and recovery during repeated runninganaerobic sprint test (RAST). Ten males (age: 23.2 ± 1.23 yrs)performed two RAST with a soy milk intervention (SOY; 500 mL soymilk + 4 g stevia sweetener) and a placebo control (CON; 500 mLwater + 4 g stevia sweetener) over 7 days. The RAST consisted ofsix 35-m sprints with a 10-sec recovery between each sprint. Thetotal effort time (sec) was not significant between SOY (32.77 ±1.23) and CON (33.28 ± 1.71) (P = 0.179). Fatigue index in SOY(31.64 ± 5.20) was significantly lower than CON (37.30 ± 5.70) (P =0.023). Mean power (Watts) (Soy: 499.27 ± 62.72, Con: 486.39 ±86.13) (P = 0.410), relative power (Watts) (Soy: 9.34 ± 1.02, Con:9.55 ± 1.51) (P = 0.461), peak blood lactate (mmol·L-1) (Soy: 9.75 ±1.61, Con: 10.24 ± 1.90) (P = 0.488), and peak blood glucose(mmol·L-1) (Soy: 23.94 ± 3.90, Con: 25.09 ± 4.61) (P = 0.497)between trials were not significant. Peak blood lactate (r = -0.654)and glucose (r = -0.662) concentrations were inversely associatedwith mean power in the SOY trial. The results indicate that the soymilk intervention in RAST significantly lowered the fatigue index and,therefore, may be used to enhance sports performance involvinganaerobic activities.
关键词：Milk;Nutrition for Performance;Repeated Anaerobic
Sprint Test;Training Athletes
