Heart rate and heart rate variability indices in frequency domain collected in n=25 crew-members overwintering at the German station in Antarctica "Neumayer III". Numbers refer to sessions as follows:
Data were recorded for 10 min in supine position in the morning.
hr, heart rate; log, Logarithm; HF, High Frequency power; LF, Low Frequency power; LF/HF, LF to HF ratio; HFnu, High Frequency power in normalised units; LFnu, Low Frequency power in normalised units.
Sex is dummy coded: men = 0; Women = 1
Funding
DLR grants number: 50WB1030, 50WB133, 50WB1525, and 50WB1915