Correlation analysis between “carbon dioxide tolerance” and cardiorespiratory endurance during exercise

doi:10.12307/2023.587

Abstract

Abstract: BACKGROUND: Maximum oxygen uptake is the “Gold standard” for evaluating cardiorespiratory endurance. According to the logical relationship of its concept, the ability of peripheral tissues (muscles) to utilize oxygen in addition to cardiorespiratory function should be the essential determinant of cardiorespiratory endurance level. The level of cardiopulmonary function is an important guarantee factor for oxygen supply during human exercise, but it may not be used as an “essential factor” for oxygen utilization.
OBJECTIVE: To explore the relationship between carbon dioxide tolerance and cardiorespiratory endurance during aerobic metabolism by assessing human carbon dioxide tolerance.
METHODS: A total of 92 healthy college students were recruited from 5 colleges and universities in Beijing. A cardiopulmonary exercise test was performed with informed consent from the subjects to collect carbon dioxide tolerance and cardiopulmonary endurance evaluation indicators for correlation analysis. The trial was approved by the Ethics Committee of the Institute of Sports Science of the General Administration of Sport of China.
RESULTS AND CONCLUSION: There was a significant positive correlation between the index of carbon dioxide tolerance and the relative and absolute values of maximum oxygen uptake (P < 0.01), and a significant positive correlation with height, body mass, and body mass index (P < 0.01). The multiple linear regression model constructed by the carbon dioxide tolerance index could accurately explain and predict the changes in maximum oxygen uptake (Adjusted R2=0.847, 0.668, P < 0.01). The model validation evaluation indicated no significant difference between the predicted value and the measured value (P > 0.05). To conclude, there is a high correlation between the carbon dioxide tolerance index and the maximum oxygen uptake in the process of aerobic metabolism. High carbon dioxide tolerance during aerobic metabolism indicates a stronger level of cardiorespiratory endurance. Moreover, in the mathematical model, the carbon dioxide tolerance index during aerobic metablism can explain and predict changes in maximum oxygen uptake to a greater extent.

Key words: carbon dioxide tolerance, cardiorespiratory endurance, cardiopulmonary exercise testing, maximal oxygen uptake, arterial partial pressure of carbon dioxide

CLC Number:

Wu Dongzhe, Gao Xiaolin, Shi Yongjin, Li Chuangtao, Wang Hao, Wang Wendi. Correlation analysis between “carbon dioxide tolerance” and cardiorespiratory endurance during exercise[J]. Chinese Journal of Tissue Engineering Research, 2023, 27(23): 3693-3699.

Figures/Tables 10

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