Examining the Influence of Cognitive Load and Environmental Conditions on Autonomic Nervous System Response in Military Aircrew: A Hypoxia-Normoxia Study.

While a reduction in HRV appeared to occur, paralleling the hypoxic condition, it did not reach statistical significance (rMSSD: −0.3 vs. 1.03 ms,Δ −1.3 ms, 95% CI: −3.5, 0.8, p = 0.39 and SDNN: Δ −2.0 ms, 95% CI: −0.11, 0.01, p = 0.61).

also in 111,027 other papers