Fig. 1
From: Pitfalls of assessment of autonomic function by heart rate variability
Association between LF/HF and lying ratio during 24-h monitoring in 18,944 men and 23,539 women who underwent 24-h Holter ECG monitoring with tri-axial accelerogram to assess physical activity and body position. Data were obtained from 24-h long-term HRV database of the Allostatic State Mapping by Ambulatory ECG Repository (ALLSTAR) project. (Revised figure in reference [31])