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Table 1: General characteristics of the study subjects, blood pressures, HRV measures and environmental conditions at 3 different altitudes (n=49). Values are median and interquartile range (25th to 75th percentile). *p<0.05 vs. 30 MASL; †p<0.05 vs. 520 MASL (Friedman repeated-measures analysis of variance on ranks with Student- Newman-Keuls test for post hoc pairwise comparisons). BMI: Body mass index; HR: Heart rate; RRI: RR intervals; mRRI: Mean RRI; SBP: Systolic blood pressure; DBP: Diastolic blood pressure; MABP: Mean arterial pressure; BT: Body temperature; bpm: Beats per minute; SDRR: Standard deviation of RRI; CVRR: Coefficient of variation of RRI; TP: Total power; VLFP: Very-low-frequency power; LFP: Low-frequency power; HFP: High-frequency power; nVLFP: Normalized VLFP; nLFP: Normalized LFP; nHFP: Normalized HFP; LHR: Low-/high-frequency power ratio; ms: Millisecond; nu: Normalized unit; AT: Ambient temperature; RH: Relative humidity. |