كليدواژه :
ﺗﻌﺎدل ﻣﺎﯾﻌﺎت , ﺧﺴﺘﮕﯽ و ﺷﯿﺮ ( لبنيات ) , ﺷﯿﺮﺳﻮﯾﺎ , شير كم چرب و ورزش
چكيده لاتين :
The aim of this study was to compare the effects of drinking skim milk, soy milk, and
water on fluid balance, rehydration and time to exhaustion during aerobic exercise. Eight
trained females (age 21.37±0.71 years, BMI 22.06±1.42 Kg.m-2, VO2max 43.09±1.83
ml.kg-1.min-1) randomly assigned. The subjects ran on a treadmill at 75% of maximum
heart rate for 20 minutes. This process continued for each subject until approximately
1.8±0.17% of reduction in body weight. Following that, subjects consumed one of the
drinks randomized crossover design. The amount of consumed liquid was about 150% of
the lost weight. Urine volume and urine specific gravity were measured after collecting
urine samples. After the end of tree hours recovery, Bruce protocol was performed to
evaluate exercise performance. The total volume of urine was significantly reduced in both
milk and soy milk trials compared to water trial (P<0.05). Furthermore, the net fluid
balance in these two trials was significantly positive compared to water trial (P<0.05) and
the time to exhaustion was also longer than water trial (P<0.05). However, there was no
significant difference between these two trials, milk and soy milk, in these variables
(P>0.05). Therefore, drinking milk and soy milk led to better rehydration and fluid balance
after exercise, which is associated with improved exercise performance.
