Analysis of the autonomic nervous system
In the study, the autonomic nervous system was evaluated with the Polar H10 device. Data was recorded by connecting the device to a smart phone via Bluetooth. Elite HRV software developed by the manufacturer of the device was used to analyze the data (Figure Elite heart rate variability (HRV) software.The Polar H10 device is an HRV sensor that comes with a wearable chest strap and is the gold standard in high sensitivity and accuracy. It can be connected to multiple training devices via Bluetooth and ANT+. The device comes with a soft, adjustable sensor that contacts the chest to capture HRV in real time. Current evidence for smartphone applications that can sync with a personal monitor to collect R–R intervals via the Elite HRV app has demonstrated user‐friendly software for instant analysis of HRV. Additionally, HRV smartphone applications often offer the option to transfer raw R–R data files directly to the practitioner's computer via email. Elite HRV, a smartphone application, was judged to be a valid platform to examine RMSSD compared to Kubios HRV 2.2, a widely used HRV analysis software (Perrotta et al., 