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Relations (1)
related 2.81 — strongly supporting 6 facts
Heart rate is a physiological parameter that is significantly altered during exposure to iso-saturation hypoxia, as evidenced by the increases observed in subjects [1] and the specific measurements recorded for both males and females [2]. Furthermore, studies indicate that iso-saturation hypoxia influences heart rate variability and sympathetic modulation differently between sexes {fact:2, fact:3, fact:4, fact:5}.
Facts (6)
Sources
Sex differences in cardiorespiratory control under hypoxia - Frontiers frontiersin.org 6 facts
claimExposure to iso-saturation hypoxia causes increases in heart rate, cardiac output, low-frequency bands of R-R intervals, blood pressure, tidal volume, and ventilation, while causing decreases in baroreflex sensitivity, total power, and the high-frequency band of R-R intervals.
claimWhen analyzing sex as a factor in iso-saturation hypoxia, females exhibit a higher heart rate and cardiac output index, but lower tidal volume, ventilation, and low-frequency band of blood pressure compared to males.
measurementUnder iso-saturation hypoxia, males had a heart rate of 77 ± 8 bpm, while females had a heart rate of 90 ± 7 bpm.
claimUnder hypoxic iso-saturation, females have higher heart rates and a greater low-frequency band response of heart rate variability compared to males, while males present a higher tidal volume.
measurementDuring iso-saturation (SpO2-matched) analysis under hypoxia, females exhibited higher heart rates, increased cardiac sympathetic modulation, and a tendency towards lower spontaneous baroreflex sensitivity compared to males.
claimIn the current study, the normalized low-frequency (LF) band of the R-R interval increased more in females during iso-saturation hypoxia, suggesting a possible greater sympathetic predominance over heart rate in females compared to males.