Feasibility of predicting maximal oxygen uptake by using the efficiency factor in healthy men
Abstract Conventionally, efficiency is indirectly estimated through a respiratory gas analyser (oxygen, carbon dioxide), which is a complex and rather costly calculation method that is difficult to perform in many situations. Therefore, the present study proposed a modified definition of efficiency,...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-10-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-43307-3 |
| _version_ | 1827711010855714816 |
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| author | Fang Li Yu-Tsai Tu Hung-Chih Yeh Chia-An Ho Cheng-Pang Yang Ying-Chen Kuo Chin-Shan Ho |
| author_facet | Fang Li Yu-Tsai Tu Hung-Chih Yeh Chia-An Ho Cheng-Pang Yang Ying-Chen Kuo Chin-Shan Ho |
| author_sort | Fang Li |
| collection | DOAJ |
| description | Abstract Conventionally, efficiency is indirectly estimated through a respiratory gas analyser (oxygen, carbon dioxide), which is a complex and rather costly calculation method that is difficult to perform in many situations. Therefore, the present study proposed a modified definition of efficiency, called the efficiency factor (EF) (i.e., the ratio of work to the corresponding exercise intensity), and evaluated the relation between the EF and maximal oxygen uptake ( $${\dot{\text{V}}\text{O}}_{2\max }$$ V ˙ O 2 max ), as well as compared the prediction models established based on the EF. The heart rate (maximal heart rate: 186 ± 6 beats min−1), rating of perceived exertion (19 ± 1), and $${\dot{\text{V}}\text{O}}_{2\max }$$ V ˙ O 2 max (39.0 ± 7.1 mL kg−1 min−1) of 150 healthy men (age: 20 ± 2 years; height: 175.0 ± 6.0 cm; weight: 73.6 ± 10.7 kg; body mass index [BMI]: 24.0 ± 3.0 kg m−2; percent body fat [PBF]: 17.0 ± 5.7%) were measured during the cardiopulmonary exercise test (CPET). Through multiple linear regression analysis, we established the BMI model using age and BMI as parameters. Additionally, we created the PBF modelHRR utilizing weight, PBF, and heart rate reserve (HRR) and developed PBF modelEF6 and PBF modelEF7 by incorporating EF6 from the exercise stage 6 and EF7 from the exercise stage 7 during the CPET, respectively. EF6 (r = 0.32, p = 0.001) and EF7 (r = 0.31, p = 0.002) were significantly related to $${\dot{\text{V}}\text{O}}_{2\max }$$ V ˙ O 2 max . Among the models, the PBF modelEF6 showed the highest accuracy, which could explain 62.6% of the variance in the $${\dot{\text{V}}\text{O}}_{2\max }$$ V ˙ O 2 max at with a standard error of estimate (SEE) of 4.39 mL kg−1 min−1 (%SEE = 11.25%, p < 0.001). These results indicated that the EF is a significant predictor of $${\dot{\text{V}}\text{O}}_{2\max }$$ V ˙ O 2 max , and compared to the other models, the PBF modelEF6 is the best model for estimating $${\dot{\text{V}}\text{O}}_{2\max }$$ V ˙ O 2 max . |
| first_indexed | 2024-03-10T17:47:48Z |
| format | Article |
| id | doaj.art-54a1670885d8439b9968b271fc5732a4 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-10T17:47:48Z |
| publishDate | 2023-10-01 |
| publisher | Nature Portfolio |
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| series | Scientific Reports |
| spelling | doaj.art-54a1670885d8439b9968b271fc5732a42023-11-20T09:28:05ZengNature PortfolioScientific Reports2045-23222023-10-0113111010.1038/s41598-023-43307-3Feasibility of predicting maximal oxygen uptake by using the efficiency factor in healthy menFang Li0Yu-Tsai Tu1Hung-Chih Yeh2Chia-An Ho3Cheng-Pang Yang4Ying-Chen Kuo5Chin-Shan Ho6School of Physical Education, Central China Normal UniversityGraduate Institute of Sports Science, Guishan District, National Taiwan Sport UniversityGraduate Institute of Sports Science, Guishan District, National Taiwan Sport UniversityGraduate Institute of Sports Science, Guishan District, National Taiwan Sport UniversityGraduate Institute of Sports Science, Guishan District, National Taiwan Sport UniversityGraduate Institute of Sports Science, Guishan District, National Taiwan Sport UniversityGraduate Institute of Sports Science, Guishan District, National Taiwan Sport UniversityAbstract Conventionally, efficiency is indirectly estimated through a respiratory gas analyser (oxygen, carbon dioxide), which is a complex and rather costly calculation method that is difficult to perform in many situations. Therefore, the present study proposed a modified definition of efficiency, called the efficiency factor (EF) (i.e., the ratio of work to the corresponding exercise intensity), and evaluated the relation between the EF and maximal oxygen uptake ( $${\dot{\text{V}}\text{O}}_{2\max }$$ V ˙ O 2 max ), as well as compared the prediction models established based on the EF. The heart rate (maximal heart rate: 186 ± 6 beats min−1), rating of perceived exertion (19 ± 1), and $${\dot{\text{V}}\text{O}}_{2\max }$$ V ˙ O 2 max (39.0 ± 7.1 mL kg−1 min−1) of 150 healthy men (age: 20 ± 2 years; height: 175.0 ± 6.0 cm; weight: 73.6 ± 10.7 kg; body mass index [BMI]: 24.0 ± 3.0 kg m−2; percent body fat [PBF]: 17.0 ± 5.7%) were measured during the cardiopulmonary exercise test (CPET). Through multiple linear regression analysis, we established the BMI model using age and BMI as parameters. Additionally, we created the PBF modelHRR utilizing weight, PBF, and heart rate reserve (HRR) and developed PBF modelEF6 and PBF modelEF7 by incorporating EF6 from the exercise stage 6 and EF7 from the exercise stage 7 during the CPET, respectively. EF6 (r = 0.32, p = 0.001) and EF7 (r = 0.31, p = 0.002) were significantly related to $${\dot{\text{V}}\text{O}}_{2\max }$$ V ˙ O 2 max . Among the models, the PBF modelEF6 showed the highest accuracy, which could explain 62.6% of the variance in the $${\dot{\text{V}}\text{O}}_{2\max }$$ V ˙ O 2 max at with a standard error of estimate (SEE) of 4.39 mL kg−1 min−1 (%SEE = 11.25%, p < 0.001). These results indicated that the EF is a significant predictor of $${\dot{\text{V}}\text{O}}_{2\max }$$ V ˙ O 2 max , and compared to the other models, the PBF modelEF6 is the best model for estimating $${\dot{\text{V}}\text{O}}_{2\max }$$ V ˙ O 2 max .https://doi.org/10.1038/s41598-023-43307-3 |
| spellingShingle | Fang Li Yu-Tsai Tu Hung-Chih Yeh Chia-An Ho Cheng-Pang Yang Ying-Chen Kuo Chin-Shan Ho Feasibility of predicting maximal oxygen uptake by using the efficiency factor in healthy men Scientific Reports |
| title | Feasibility of predicting maximal oxygen uptake by using the efficiency factor in healthy men |
| title_full | Feasibility of predicting maximal oxygen uptake by using the efficiency factor in healthy men |
| title_fullStr | Feasibility of predicting maximal oxygen uptake by using the efficiency factor in healthy men |
| title_full_unstemmed | Feasibility of predicting maximal oxygen uptake by using the efficiency factor in healthy men |
| title_short | Feasibility of predicting maximal oxygen uptake by using the efficiency factor in healthy men |
| title_sort | feasibility of predicting maximal oxygen uptake by using the efficiency factor in healthy men |
| url | https://doi.org/10.1038/s41598-023-43307-3 |
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