Abstract
According to the nutritional requirement of athletes during exercise, this study aims to invent a drink which mainly contains whey protein and is also added with saccharides and electrolyte, etc., to keep athletes’ athletic ability and accelerate the recovery of physical ability. Athletes that were going to participate in a track and field sports meeting of province were asked to drink the whey protein drinks during training and the index of Red Blood Cell (RBC), Hemoglobin (HB) concentration, Hematocrit (HCT), Mean Corpuscular Volume (MCV) of athletes’ blood were measured. The blood sugar concentration of athletes in control group before and after the experiment was 4.06±0.55 and 3.25±0.58 mmol/L, respectively, which lowered about 17% (p＜0.05) and the difference was statistically significant. However, the blood sugar concentration of athletes in experimental group before and after the experiment was 4.34±0.65 and 4.56±0.52 mmol/L respectively, which increased about 3.5% (p＜0.05) and the difference had no statistical significance. The experimental results showed that whey protein drinks could effectively protect body’s erythrocyte function, prevent decline of HB as well as strengthen physical ability, relieve fatigue and maintain the muscle microstructure. Therefore, whey protein drinks can effectively strengthen athletes’ immunocompetence as well as the muscle strength and it is also antioxidative and can prevent body damage and relieve fatigue. What’s more, whey protein’s various sports nutritional properties enable it to be widely applied to sports nutrition.
Highlights
In nowadays, the requirement for athletes’ physical abilities becomes higher and higher in competitive sports and besides scientific and assiduous training, athletes need reasonable nutritional support
Sports drinks contains certain amount of sugar, electrolyte, minerals and vitamins to supply basic nutrients that lost during exercise (Marie and Jose, 2008; Rodriguez et al, 2009) to adapt to physiological characteristics of people who exercise or do physical labor a lot as well as meet the nutritional needs of them (Fitness Committee on Nutrition the Council on Sports Medicine, 2011)
Whey protein drinks’ influence on athletes’ blood biochemical indexes: This study studied the whey protein drinks’ influence on athletes’ blood biochemical indexes and the experimental results have been shown in Table 2 and 3
Summary
The requirement for athletes’ physical abilities becomes higher and higher in competitive sports and besides scientific and assiduous training, athletes need reasonable nutritional support. Compared with solid food or food mixed with solids and liquids, sports drinks have higher nutrient dispersity and their temperatures are easier to adjust, which won’t cause heavy burden to intestines and stomach and can be absorbed by body quickly. They are widely demanded and have potential development in current competitive sports and among exercising people (Marie and Jose, 2008). According to the China’s national standards of 2009, sports drinks are defined as a kind of soft drinks whose nutritional compositions and contents are appropriate to physiological characteristics and special nutritional needs of people who exercise or do physical labor (Food and Fermentation Industries, 2009). In the experimental research which evaluates effects of sports drinks, researchers can estimate body’s utilization of sugars (extraneous sugar) according to hormone responses caused by drinks with different sugar contents and sugar types (Stevenson Emma et al, 2006), researchers can predict what kind of sugar supplement method can better maintain the state of exercise while the sugar contents are the same
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