Prediction of males' physical work capacity in various simulated altitudes using an incremental cycle ergometer exercise test at sea levelopen access
- Authors
- Park, Hun-Young; Kim, Jeong-Weon; Nam, Sang-Seok
- Issue Date
- 1-Dec-2022
- Publisher
- MRE PRESS
- Keywords
- High altitude; Hypoxia; Physical work capacity; Exercise performance; Estimation; Prediction; Regression
- Citation
- JOURNAL OF MENS HEALTH, v.18, no.12, pp.49 - 56
- Journal Title
- JOURNAL OF MENS HEALTH
- Volume
- 18
- Number
- 12
- Start Page
- 49
- End Page
- 56
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/86870
- DOI
- 10.22514/jomh.2022.004
- ISSN
- 1875-6867
- Abstract
- Standard approach to predict the decrease in physical fitness that will occur following a transition to a higher altitude is unavailable. Therefore, the study aimed to design simple mathematical models to predict submaximal exercise performance in various altitude environments, using a simple physical work capacity test conducted at sea level involving >200 subjects. After splitting the subjects' data in a ratio of 7:3, we used 70% of the data for regression model development and employed 30% for cross-validation testing. All subjects performed submaximal exercise tests using a cycle ergometer at artificial altitudes of 2000 m, 3000 m, 4000 m, 5000 m, and at sea level. We applied simple regression analysis to create a predictive model with the statistical significance set at the level of <5%. There were 233 subjects involved in this study. The coefficient of determination of our regression model was 40-58%, and the standard error of estimation was 14.96-17.27 watts. The cross-validation of our regression model was 8-10%. Among the regression models developed, the one applied to an artificial altitude of 5000 m was 17%, and the regression model applied to an artificial altitude below 4000 m had no issues in generalization since the cross-validation was less than 10%. However, the regression model applied to an artificial altitude of 5000 m had a cross-validity of 17%; therefore, it should be used with caution.
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Collections - 특수치료대학원 > 특수치료학과 > 1. Journal Articles
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