L'utilisation d'un nouveau système d'enregistrement de fréquence cardiaque battement à battement pour l'analyse traditionnelle de variabilité de fréquence cardiaque

Introduction: The measurement of Heart Rate Variability (HRV) is widely used in the field of sport's sciences. However, the analysis which rises from these measurements requires equipment that conform to those conditions outlined by the Task force of 1996. Purpose: The purpose of the present study was: 1) to determine the accuracy of a new heart rate "beat to beat" recorder; Polar RS 800 (Polar Electro Oy, Kempele, Finlande); 2) and whether the quality of the tachogram is sufficient for traditional analysis of HRV. Device and methods: Heart rate was recorded on 15 persons (eight men, seven women) in three different situations, simultaneous with this device and a gold standard (ADInstruments, Castle Hill, Australia, else Novacor, Rueil-Malmaison, France). Signals are synchronized and compared with Bland and Altman method to asses the accuracy. HRV analysis is made and the same comparison method was applied. Conclusion: This device enables measurements of R-R intervals with a precision of ± 1 to 5 ms, and is sufficient to analyse HRV without bias.