![garmin mobile xt sis garmin mobile xt sis](http://3.bp.blogspot.com/-ok0ALWeGWvE/TWRpCRrlDHI/AAAAAAAAAsc/M6u1ZR254Ls/s1600/garmin1.jpg)
Therefore, in an attempt to explain the disparity observed in the literature, the primary purpose of this study was to estimate the association between measures of HRV indices, aerobic performance parameters and blood pressure indices using the Bayesian estimation of correlation on simulated data using Markov Chain Monte Carlo (MCMC) and the equal probability of the 95% high density interval (95% HDI). A notable observation about early studies is that they all followed the frequentist approach to data analyses. Several explanations regarding the disparity observed in the literature with regard to heart rate variability (HRV) and its association with performance parameters have been proposed: the time of day when the recording was conducted, the condition (i.e., rest, active, post activity) and the mathematical and physiological relationships that could have influenced the results. Regarding HRV analysis, we did not find any difference for HRV analysis in the supine position, but the standing and exercise conditions both showed small modifications. Results show that the accuracy of this system is in accordance with the literature in terms of the limits of agreement.
#GARMIN MOBILE XT SIS SERIES#
In a second step, we compared the results of HRV analysis between the ECG RR time series and Garmin 920 XT series. In a first step, we compared RR time series obtained with both tools using the Bland and Altman method to obtain the limits of agreement in all three conditions.
![garmin mobile xt sis garmin mobile xt sis](http://4.bp.blogspot.com/-Ms7RwA8Hqgk/TtxzUdnrgqI/AAAAAAAAAEw/A2JtYkpDLWo/s1600/GarminMenu4.jpg)
![garmin mobile xt sis garmin mobile xt sis](http://4.bp.blogspot.com/_fSFocOS__6c/THC4xpz_HOI/AAAAAAAABJc/79QgjYli4-A/s320/Scr000013.jpg)
RR time series were collected simultaneously with an ECG (Powerlab system, AD Instruments, Castell Hill, Australia) and a Garmin XT 920 in 11 healthy subjects during three conditions, namely in the supine position, the standing position and during moderate exercise. The purpose of this investigation was to assess the accuracy of RR time series measurements from a Garmin 920 XT HRM as compared to a standard ECG, and to verify whether the measurements thus obtained are suitable for HRV analysis. This method requires periodogram measurement, which can be obtained by an electrocardiogram (ECG) or from a heart rate monitor (HRM), e.g. Heart rate variability (HRV) analysis is widely used to investigate autonomous cardiac drive.