Research on the Relationship between Athletes’ Protein Intake and Nitrogen Balance
Protein requirements can be evaluated by nitrogen balance, which is obtained by comparing protein intake and nitrogen consumption in the daily diet. In recent years, the training of young athletes in China has tended to become adult, and high-intensity and heavy-load training models have been widely adopted in many local sports schools. This article analyzes the relationship between athletes' protein intake and nitrogen balance in the body. The results showed that there was no significant difference in the energy intake ratio of protein, fat and sugar, but the sugar energy intake ratio of the athlete group was lower than the athlete's recommended value. The athlete group had a positive nitrogen balance, but there was no significant difference in the nitrogen balance between the two groups. The daily protein intake of both groups was higher than the recommended value of FAO. For young athletes participating in sports training, increasing protein intake is even more important. The amount of protein consumed by adolescents engaged in systematic training should not only meet the needs of rapid adolescent growth and development. What's more important is to meet the extra protein requirements caused by exercise training to meet the body's energy balance.