Rs800cx heart rate monitor

The RR intervals recorded by the Polar RS800CX Heart Rate monitor (with a sampling rate of 1,000 Hz) were transferred to the Polar Precision Performance software (v. 3.0, Polar Electro, Finland). The software allowed visualization of the HR and the extraction of a file relating to a cardiac period (RR interval) in a “txt” file. In the digital filtering, the Polar Trainer program identified artefacts and ectopic beats through moderate grade analysis. Manual filtering was performed using Microsoft Office Excel 2013 through visual analysis. After digital filtering was performed, the Polar Trainer program was supplemented with manual filtering to eliminate artefacts and premature ectopic beats; 256 RR intervals were used for data analysis. Only series with more than 95% of sinus beats were included in the study. Time-frequency domain analysis was performed with HRV analysis software (HRV Kubios v.1.1 for Windows, Biomedical Signal Analysis Group, University of Kuopio, Finland).[17 (link)]

Heart rate responses were continuously monitored during all the SSG and HIIT training sessions to provide the average HR and maximal HR reached during each conditioning intervention. Heart rate responses were recorded by a T32 Polar Electro, Kempele, Finland. Heart rate response was measured by a Polar WearLink + transmitter, watch Polar RS800cx heart rate monitor, Polar IrDA USB Adapter and Polar ProTrainer 5 software.