Three laboratory direct test methods for maximal oxygen uptake:Comparison,regression analysis and applications
10.3969/j.issn.1000-6710.2024.01.005
- VernacularTitle:3种最大摄氧量实验室直接测试方法结果比较、回归分析与应用
- Author:
Ling LIN
1
;
Wenteng WU
;
Jiaming LUO
;
Kaiwen FAN
;
Huaye WANG
;
Zhiguang LI
;
Xiaoping DUAN
Author Information
1. 宁波大学体育学院(宁波 315211)
- Keywords:
VO2max;
treadmill test method;
power bicycle test method;
difference distribution;
regres-sion analysis
- From:
Chinese Journal of Sports Medicine
2024;43(1):29-38
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare the discrepancies among results of three commonly used laboratory direct test methods for maximal oxygen uptake(VO2max),explore their linear regression relationships,mutual predictability and comparability.Methods Using a quasi-experimental design of cluster sampling and within-group interaction design,20 male cross-country skiers were tested for VO2max using the Bruce protocol(Method 1),90-second incremental load exercise on power bicycle(Method 2),and 1-minute incremental load exercise on treadmill(Method 3),with an interval of one week.The indepen-dent and dependent variable were the three VO2max test methods and the VO2max,respectively.Results Significant differences were found in the average VO2max of the three test results,with the value mea-sured by Method 1 ranking the first,followed by that assessed by Method 3 and Method 2(P<0.05).Moreover,the frequency of individual differences in the results of the three methods showed that the VO2max of Method 1 was about 6 and 3 ml/min·kg higher than that measured by Method 2 and 3.However,at the same treadmill speed,the average blood lactate evaluated using Method 3 was higher than Method 1,and the speed reached aerobic and anaerobic thresholds about one speed unit(1 km/h)lower than Method 1.Meanwhile,linear regression analyses of the test results between Method 1 and 2,as well as Method 1 and 3 showed that both the regression models and coefficients were statis-tically significant(P<0.001),with the R-squared values of 9.25 and 9.05,respectively.Conclusion The Bruce protocol performs best in assessing the maximum value of the athlete's VO2max phase,whose results have linear regression relationships with the other two methods,and can be used for pre-dicting their results.Moreover,athletes of different events and levels can choose different VO2max test methods accordingly.Lastly,the speed and heart rate ranges corresponding to the aerobic and anaero-bic thresholds can serve as an effective and convenient method to control the training intensity.
