Time-and Frequency-Domain Analysis of Stroke Volume Variability Using Indoor Cycling to Evaluate Physical Load of Body

Yu Han Lai, Wei Chen Lai, Po Hsun Huang, Tzu Chien Hsiao*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A potential myocardial injury can be induced by intensive sporting activities, which may be due to ventricular tachycardia or fibrillation when individuals continue to exercise during the maximum physical loading period (the aerobic capability plateau, ACP). Herein, we conducted an incremental exercise test with the RR-interval and SV-series measurements as the input and output of the circulatory system. Through time and frequency analyses, we aimed to identify the indicators for distinguishing the normal stage (S1), last stage before ACP (S2), and ACP stage (S3) during different incremental physical loads. The cross-correlation results of the RR interval and SV series showed that the maximum coefficient of S2 was significantly greater (p < 0.05) than that of S1 (median 0.91 to 0.87), and also significantly lower (p < 0.05) than that of S3 (median 0.87 to 0.60). The corresponding spectrum shows that the decreasing correlation coefficient of SVV and Heart rate variability can be used to assess whether the body has reached the ACP. These findings can be used as a guide for exercise healthcare. Pausing or reducing the exercise load before entering the ACP could effectively reduce the risk of myocardial injury.

Original languageEnglish
Article number148
JournalInformation (Switzerland)
Volume13
Issue number3
DOIs
StatePublished - Mar 2022

Keywords

  • Aerobic capability plateau
  • Cardiovascular response
  • Heart rate variability
  • Incremental cycling exercise
  • Stroke volume variability

Fingerprint

Dive into the research topics of 'Time-and Frequency-Domain Analysis of Stroke Volume Variability Using Indoor Cycling to Evaluate Physical Load of Body'. Together they form a unique fingerprint.

Cite this