“…The HF-HRV analysis was the most frequently reported (Melis and Van Boxtel, 2001; Hansen et al, 2003, 2004; Kim et al, 2006; Britton et al, 2008; Drucaroff et al, 2011; Shah et al, 2011; Solernó et al, 2012; Kimhy et al, 2013; Gillie et al, 2014; Mann et al, 2015; Mahinrad et al, 2016; Williams et al, 2016; Colzato and Steenbergen, 2017; Colzato et al, 2018; Ottaviani et al, 2018). The LF/HF HRV ratio (Frewen et al, 2013), the LF-HRV band (Britton et al, 2008; Drucaroff et al, 2011; Frewen et al, 2013; Gillie et al, 2014), the mid-frequency (MF) HRV band (Melis and Van Boxtel, 2001; Duschek et al, 2009), the standard deviation of mean RR interval (SDNN) (Britton et al, 2008; Drucaroff et al, 2011; Solernó et al, 2012; Frewen et al, 2013; Zeki Al Hazzouri et al, 2014, 2017) and the square root of the mean squared differences of successive RR intervals (RMSSD) (Kim et al, 2006; Solernó et al, 2012; Zeki Al Hazzouri et al, 2014, 2017; Colzato et al, 2018; Ottaviani et al, 2018) were also evaluated.…”