Table 1.

Physiological parameters of volunteers at sea level (n = 105) who were subsequently exposed to HA for 7 days (HA-D7, n = 55) and 3 months (HA-D150, n = 40).

	Sea level	HA-D7	HA-D150
SpO2	98.99 ± 0.001	87.47 ± 2.855***	95.42 ± 0.785∧∧∧
HR (bpm)	76.60 ± 8.26	77.51 ± 12.09	83.14 ± 12.815∧∧∧
SBP (mmHg)	118.0 ± 8.97	120.68 ± 10.91	127.44 ± 12.995∧∧∧
DBP (mmHg)	78.40 ± 3.44	79.69 ± 8.65	84.55 ± 9.165∧∧∧
Hb (g/dL)	14.07 ± 0.16	15.91 ± 0.625**	15.30 ± 1.05*

^*represents p < 0.05 as compared to sea level,

^**represents p < 0.01 as compared to sea level,

^***represents p < 0.001 as compared to sea level,

^∧∧∧represents p < 0.001 as compared to HA-D7.