Oxygen uptake response to switching stairs exercise by non-parametric modeling  

作　　者：Hairong Yu Chenyu Zhang Kai Cao Hamzah M.Alqudah Steven Weidong Su 

机构地区：[1]Key Laboratory of Child Development and Learning Science of Ministry of Education and the School of Biological Science and Medical Engineering,Southeast University,Nanjing,210096,Jiangsu,China [2]College of Artificial Intelligence and Big Data for Medical Science,Shandong First Medical University and Shandong Academy of Medical Sciences,Jinan,250117,Shandong,China [3]Faculty of Engineering and Information Technology,University of Technology Sydney,Ultimo,NSW,2007,Australia

出　　处：《Control Theory and Technology》2024年第2期315-325,共11页控制理论与技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.62103449);the Start-up Research Fund of Southeast University(RF1028623007);the Zhishan Youth Scholar Support Program of Southeast University(2242023R40044).

摘　　要：Oxygen uptake plays a crucial role in the evaluation of endurance performance during exercise and is extensively utilized for metabolic assessment. This study records the oxygen uptake during the exercise phase (i.e., ascending or descending) of the stair exercise, utilizing an experimental dataset that includes ten participants and covers various exercise periods. Based on the designed experiment protocol, a non-parametric modeling method with kernel-based regularization is generally applied to estimate the oxygen uptake changes during the switching stairs exercise, which closely resembles daily life activities. The modeling results indicate the effectiveness of the non-parametric modeling approach when compared to fixed-order models in terms of accuracy, stability, and compatibility. The influence of exercise duration on estimated fitness reveals that the model of the phase-oxygen uptake system is not time-invariant related to respiratory metabolism regulation and muscle fatigue. Consequently, it allows us to study the humans’ conversion mechanism at different metabolic rates and facilitates the standardization and development of exercise prescriptions.

关 键 词：Non-parametric modeling Interval stair training exercise Kernel method.Cardiorespiratory response Oxygen uptake 

分 类 号：R87[医药卫生—运动医学]