Author(s): CHEN, X., Institution: BEIJING SPORT UNIVERSITY, Country: CHINA, Abstract-ID: 482

INTRODUCTION:
Red blood cell lifespan (RBCL) refers to the survival time of red blood cells in circulating blood after being released from bone marrow.This index varies greatly between different individuals of the same species. The normal value of human red blood cell life is 120±10 days. Red blood cell life is usually used as an important physiological indicator to reflect the survival state of red blood cells.
The successful development of exhaled breath analysis instrument can quickly and accurately measure the content of CO and CO2 in gas samples, and obtain the sample red blood cell life data after calibration and calculation.The collection of samples is also very convenient, only by simple blowing.It can achieve dynamic detection that can not be completed by marker method [1].

METHODS:
By comparing the red blood cell life data of different samples, to explore the effects of different exercise intensity and duration on the human red blood cell life index, and provide scientific reference for healthy exercise. The latest version of exhaled breath analyzer was used to collect the exhaled breath sample data of each subject regularly, and the exhaled breath related components of the sample were analyzed quantitatively and accurately combined with Levitt method to calculate the red blood cell life. Using the group random sampling method, a random sampling was conducted among the undergraduates and graduates of Beijing Sport University, and 31 sample data were obtained. The daily exercise habits and long-term exercise years of the subjects were investigated, and they were divided into a sedentary group, a moderate group and a professional group. The exhaled gas content and the red blood cell life data of the samples in each group were compared and analyzed.
RESULTS:
The average red blood cell life of normal humans was 120±10 days. The average red blood cell life of the long-term high-intensity exercise group was 101.3, which was lower than the normal adult red blood cell life. The average red blood cell life of the long-term sedentary group was 124.1 days, and the average red blood cell life of the continuous moderate exercise load group was 138.9 days, which were both within the normal adult red blood cell life range.
CONCLUSION:
Long-term participation in high-intensity overload exercise will have a certain negative impact on the body, resulting in the shortening of the life of red blood cells. The people involved in physical training should exercise scientifically and reasonably. It also provides a scientific theoretical basis for the rational and healthy participation in exercise, the development of scientific exercise plans.
[1], Li Luxi, Deng Huimin, Ma Wen, et al. Progress in the Detection of Erythrocyte Lifespan by Exhalation Tests and its Clinical Application [J]. Medical Recapitulate, 2019, 25 (04): 706-710.