Key result
Simulated immersion in a hyperbaric chamber revealed significant nonlinear and multivariable relationships between heart rate variability parameters, atmospheric pressure, and biophysical features.
Why the study?
Autonomic Nervous System responses are affected by atmospheric pressure changes reflected in HRV signals, prompting modeling of HRV relationships across stages of simulated immersion.
Does simulated immersion in a hyperbaric chamber alter autonomic nervous system related indices derived from HRV in healthy subjects?
Observational (n=17)
Does simulated immersion in a hyperbaric chamber alter autonomic nervous system related indices derived from HRV in healthy subjects?
Simulated hyperbaric immersion significantly alters autonomic nervous system responses as measured by HRV, with complex nonlinear and multivariable relationships influenced by depth, time, and individual biophysical factors.
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May inform pre-dive HRV screening for diver safety; leaves open prospective validation in larger cohorts.
Perez-Martinez et al. (2019) conducted an observational in Healthy subjects (simulated diving) (n=17). Simulated immersion in a hyperbaric chamber vs. Baseline (sea level / 1 atm) was evaluated on Relationships between heart rate variability (HRV) parameters, biophysical variables, and atmospheric pressure changes. Simulated immersion in a hyperbaric chamber revealed significant nonlinear and multivariable relationships between heart rate variability parameters, atmospheric pressure, and biophysical features.
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