Pulse rate variability responds to cold exposure differently than heart rate variability, particularly in peripheral sites like the finger and toe, overestimating most variability indices.
Observational (n=20)
No
Does whole-body cold exposure alter the agreement between multi-site pulse rate variability (PRV) and heart rate variability (HRV) in healthy volunteers?
Multi-site PRV responds differently to cold exposure compared to HRV, particularly in peripheral sites, suggesting PRV contains distinct localized autonomic information rather than being a direct surrogate for HRV.
PRV responds to cold exposure differently to HRV, especially in peripheral sites such as the finger and the toe, and may have different information not available in HRV due to its non-localized nature. Hence, multi-site PRV shows promise for assessing the autonomic activity on different body locations and under different circumstances, which could allow for further understanding of the localized responses of the autonomic nervous system.
Mejía‐Mejía et al. (Thu,) conducted a observational in Healthy volunteers (n=20). Whole-body cold exposure vs. Baseline measurement at 24 ± 1°C was evaluated on Differences in PRV and HRV indices during cold exposure. Pulse rate variability responds to cold exposure differently than heart rate variability, particularly in peripheral sites like the finger and toe, overestimating most variability indices.