1. Mathematical Modeling and Expression of Heart Rate Deflection Point using Heart Rate and Oxygen Consumption.
- Author
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BAKER, KAYLA M., FUKUDA, DAVID H., CHURCH, DAVID D., LA MONICA, MICHAEL B., BEYER, KYLE S., HOFFMAN, JAY R., and STOUT, JEFFREY R.
- Subjects
ANAEROBIC threshold ,HEART beat ,BIOLOGICAL mathematical modeling ,EXERCISE tests ,OXYGEN consumption - Abstract
Heart rate deflection point (HRDP) can be determined through different mathematical-modeling procedures, such as bi-segmental linear regression (2SEG) or maximal distance model (D
max ). The purpose was to compare heart rate (HR) and oxygen consumption (VO2 ) at HRDP when using 2SEG and Dmax, and to examine their relationships with respiratory compensation point (RCP) and running performance. Nineteen participants completed a graded exercise test (GXT), to determine HRDP and RCP, and a 5km treadmill time trial (5Ktime ). No differences were found in HR or VO2 when comparing HRDP2SEG , HRDPDmax , and RCP. Strong correlations were found between HRDP2SEG, HRDPDmax, and RCP when using HR and VO2 . No relationships were found between 5Ktime and HR at HRDP or RCP; however, strong relationships were found with VO2 . While 2SEG and Dmax may be interchangeable in determining HRDP, VO2 at HRDP and RCP yielded stronger relationships to 5Ktime than HR. Therefore, VO2 at HRDP may be a better predictor of running performance than HR. [ABSTRACT FROM AUTHOR]- Published
- 2017
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