A tertiary care study on the effectiveness of moderate weight loss on heart rate variability frequency-domain components in obese patients at high cardiovascular risk

Figures

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  Figure 1. Effects of the nutritional program on the frequency-domain components in patients at high cardiovascular risk. In panels (A) and (B), the closed circles indicate individual values of LF at baseline and after the nutritional program. In panels (C) and (D), the closed circles indicate individual values of HF at baseline and after the nutritional program

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  Figure 2. Effects of the nutritional program on the LF/HF ratio in patients at high cardiovascular risk. In panels (A) and (B), the closed circles indicate individual values of the LF/HF ratio at baseline and after the nutritional program. Panel (C) depicts a representative image of heart rate variability in the time (left) and frequency (right) domains, showing the SDNN, pNN50, and RMSSD components, as well as the LF and HF components, respectively. The circle on the right illustrates the balance between the high-frequency (HF, vagal activity) and low-frequency (LF, sympathetic activity) components at baseline, with an LF/HF ratio of 1.04. The electrocardiogram recording on the right shows only the D2 lead. Panel (D) presents a representative image of heart rate variability in the time (left) and frequency (right) domains, showing the SDNN, pNN50, and RMSSD components, as well as the LF and HF components, respectively. The circle on the right illustrates the increased significant difference in the high-frequency component (HF, vagal activity) in relation to the LF component (sympathetic activity) after the nutritional program, with an LF/HF ratio of 0.17. The electrocardiogram recording…