Abstract :
In their article, published in the August 2014 issue of The Anatolian Journal of Cardiology, Cansel et al. (1) investigated the effects of Ramadan fasting on heart rate variability (HRV) parameters, as assessed by 24-hour Holter monitoring, and found that some HRV indices during Ramadan fasting, such as mean RR interval, mean 5-min standard deviation of the NN interval (SDNNi), the number of interval differences of successive NN intervals greater than 50 ms, total power, low-frequency power, normalized LF power, high-frequency power, and normalized HF power, increased when compared with their post-Ramadan values. The standard deviation of all NN intervals (SDNN) during Ramadan fasting was found to be unchanged in comparison to its post- Ramadan value.
