Abstract
The objective of the present study was to develop a simplified heart rate recovery cost (RC) model and to validate it under various degrees of dynamic and static task components. The simplified model of heart rate recovery cost consisted of two parameters: heart rate increase (DeltaHR) and recovery time (T). The following formula revealed their relationship: RC (recovery cost) = T (DeltaHR-1)/lnDeltaHR Exercise, including cycling at three work loads (40, 60, 80 W) on a cycle ergometer, and carrying a backpack with three weights (0, 7.5, 15 kg) was studied in seven male subjects. For each exercise condition, resting HR, working HR, and recovery time (T) were recorded. The results support the hypothesis that neither heart rate increase nor recovery cost could completely assess the physical stress incurred when performing a combined dynamic/static exercise. The DeltaHR measurement was more sensitive to the increase of static load and the calculated RC value increased with both dynamic and static load. The simplified model of recovery cost can be easily applied without interfering with a person's work routine and without discomfort.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
