The nutritional supplements of general athletes are mainly considered to contain protein, fat, sugar, water, in-organic salt, vitamin and other nutrilites [1]. The under load of athletes body is serious, which may cause high-level endurance athletes a variety of exercise-induced diseases such as excessive fatigue in the case of insufficient nutritional supplements intake. According to the theory of biochemistry analysis, home iron, L-carnation, glutamine, lycopene thistle sapiens and Chinghai Jing Xian Ling are common compatible ingredients. Studies have shown that the circulating iron has good effects on promoting bone marrow hematopoietic, treating hemolytic and uncontrollable hemorrhagic anemia, and regulating iron enzyme activity. L-carnation is useful in fat-burning, which improves sports power ratio; it can also remove excess lactic acid and delay fatigue. Glutamine is a crucial amino acid in preventing muscle protein decomposition, and promoting muscle growth. It also can stimulate the secretion of growth hormone, insulin and testosterone; reduce lactic acid accumulation, which is caused by the movement of the exercise capacity and fatigue. Rheidol rose plays a key role in regulating the immune function of human body, delaying the production of sports fatigue, reducing blood urea nitrogen levels after intensive training, and promoting the recovery of body function [2, 3]. This study selected 24 outstanding athletes from national race team as the research object, and adopted composite sports supplements, aiming at improving athletes body function and athletic ability.

This research is supposed to test a kind of composite sports in different training phase to determine the related biochemical indicators. It aims to race nutrition intervention and provide experimental basis for scientific training and improve performance of walking athlete’s.

The objects of study are 24 race walking athletes consisting of 12 males and 12 females

2.3. Results of Experiments

Composite sports supplements take effect in morning pulse change walker. As Fig. (1) shows, the morning pulses of male and female walking athletes fluctuate along with the amount of exercise during the whole training period, and two peaks appeared at the 4^th and the 8^th week. At the same time three low morning pulses appeared at the 1^st, the 5^th and the 9^th week. It has been noticed that it reached to the lowest point in the 9^th week.

Fig. (1). Mean values of male and female athletes’ morning pulse in different training phases.

It can be seen from Table 1 that in the second stage (the ability rising period, the 2^nd-4^th week) and the fourth stage (the ability consolidating and rising period, the 6^th to the 8^th week), the athletes' morning pulses appeared in two peaks. The athletes’ morning pulses in both the second and the fourth stages were significantly higher than that in the first stage (P<0.05), we suspect it is because athletes have not adapted to the exercise intensity change. The morning pulses values obviously decreased in the third phase (phase adjustment, 5^th week) and the fifth stage (pre-match preparations period, 9^th week) compared with the second phase (P<0.05). Both the male and female athletes have the lowest morning pulse value in the fifth stage (P<0.01).

To determine the effect of composite sports supplements on the average diastolic blood pressure of walking athletes, we measured the walker average diastolic blood pressure of male and female athletes in the early morning during the whole training period. As Fig. (2) shows the athletes’ diastolic pressures change along with the amount of exercise. Two peaks appeared in the 4^th and the 8^th week, which dropped down in the 1^st, the 5^th and the 9^th week, the diastolic pressures demonstrate similar changing trend with the morning pulse, which is the values in the 9^th week reaching to the lowest point in the whole training period [6, 7].

Fig. (2). Mean values of male and female athletes’ diastolic pressure in different training weeks.

As it can be seen from Table 2, the athletes' average morning diastolic blood pressure values change along with the physiological load and intensity of exercises. The values in the second stage (the improving ability period) and the fourth stage (the ability consolidating and rising period) were significantly higher than that in the first stage, (P<0.05). We therefore, proposed that high intensity exercises lead to the high morning diastolic blood pressure. In the third stage (the adjustment period) and the fifth stage (the pre-match preparation), it can also be observed that the morning diastolic blood pressure showed a marked decline, compared to the second phase (P<0.05). And the early diastolic blood pressure of both male and female walking athletes in the fifth stage is significantly higher than that of the other four stages (P<0.01).

We also tested the routine blood indexes of athletes during the training phase. As it can be seen from Table 3, the average amounts of HCT (blood red blood cell volume), Hob (hemoglobin), MCH (the average amount of red blood cell hemoglobin), RBC (red blood cell count) and MCHC of male athletes (RBC)in the second stage significantly reduced (P<0.05). The values of RBC, MCV, Hob, MCH and MCHC of male athletes increased significantly in the third stage (P<0.05). The amounts of RBC, MCV and RDW (red blood cell distribution width) of male athletes increased apparently in the fourth stage compared to the first stage (P<0.05), but the values of Hob in male athletes decreased (P<0.05), and values of MCH and MCHC also declined (P<0.01).

To further study the influences of composite sports supplements on blood testosterone levels of walking athletes, we tested the testosterone levels of athletes in five stages. We found that the testosterone levels in both male and female athletes in the first, the third and the fifth stages increased significantly (P<0.05). It is also noticed that the lowest values of testosterone levels appeared in the second stage but the highest ones are achieved in the fifth stage (P<0.05).

Blood urea is a biochemical indicator which can reflect the functional status and diet can also be used to measure the size of the training load. We also measured the blood urea level of athletes during five stages. It can be seen from Table 5 that the blood urea levels of male and female athletes in five training stages varied in different changing modes of serum testosterone. On the contrary, the blood urea levels in the first, the third and the fifth stage are lower than that in the second and the fourth stage (P<0.05).

A series of experiments test the function of composite sports supplements, which may lead us to draw some conclusions. In the first place, these composite sports supplements can accelerate the morning pulse recovery level in both male and female walking athletes during the high strength training, suggesting that the ability of the athlete's heart rate was improved, which is an advantage in the functional recovery after the exercise. We can use composite sports supplements to adjust the blood pressure levels and improve myocardial contraction of male and female walking athletes in the intense strength training period. It makes easy to adapt quickly to the change of the exercise load. Secondly, since composite sports supplements can prevent the oxidative damage and the aging process of red blood cells, it protects red blood cells structural integrity as well. Finally, composite sports supplements can be used to decrease the blood urea level increased by abnormal load exercises and reduce the fatigue level of athletes, which play a vital role in ensuring the smooth completion of the training mission and normal play of the competitive level.