Whole blood test results of subjects after returning to Chongqing.

<p>Data are given as the mean ± SD. RBC  =  red blood cell, Hb  =  hemoglobin, Hct  =  hematocrit, MCV  =  mean corpuscular volume, MCH  =  mean corpuscular hemoglobin, MCHC  =  mean corpuscular hemoglobin concentration, RDW  =  red blood cell volume distribution width, WBC  =  white blood cell, Neu  =  neutrophil. ^*<i>P</i><0.05, relative to baseline, ^&<i>P</i><0.05, relative to high altitude values, ^#<i>P</i><0.05, relative to 3^rd day values, ̂<i>P</i><0.05, relative to 50^th day values, ^△<i>P</i><0.05, relative to the control group.</p

Serum CK, CK-MB, and LDH of subjects after returning to Chongqing.

<p>Data are given as the mean ± SD. CK  =  creatine kinase, CK-MB  =  creatine kinase–MB, LDH  =  lactate dehydrogenase. ^*<i>P</i><0.05, relative to baseline, ^&<i>P</i><0.05, relative to high altitude values, ^#<i>P</i><0.05, relative to 3^rd day values, ̂<i>P</i><0.05, relative to 50^th day values, ^△<i>P</i><0.05, relative to the control group.</p

pH, PaO2, PaCO2, and SaO2 of subjects after returning to Chongqing.

<p>Data are given as the mean ± SD. ^*<i>P</i><0.05, relative to baseline, ^&<i>P</i><0.05, relative to high altitude values recorded at 6 months, ^△<i>P</i><0.05, relative to the control group</p

Rates of change in symptom scores.

<p>Data are presented as mean ± SD. Symptom scores recorded on the 3^rd day after return to low-altitude areas served as baseline values. Rate of change 1 = (score on 50^th day-score on 3^rd day)/score on 3^rd day×100%; rate of change 2 = (score on 100^th day-score on 3^rd day)/score on 3^rd day×100%. Rates of change 1 and 2 showed no significant difference between the Chongqing and Kunming groups (<i>P</i>>0.05).</p

Symptom scores.

<p>Data are presented as mean ± SD. *<i>P</i><0.05, relative to the Chongqing group. ̂<i>P</i><0.05, relative to the 3^rd day, ^#<i>P</i><0.05, relative to the 50^th day.</p

Whole blood test results of subjects after returning to Kunming.

<p>Data are given as the mean ± SD. RBC  =  red blood cell, Hb  =  hemoglobin, Hct  =  hematocrit, MCV  =  mean corpuscular volume, MCH  =  mean corpuscular hemoglobin, MCHC  =  mean corpuscular hemoglobin concentration, RDW  =  red blood cell volume distribution width, WBC  =  white blood cell, Neu  =  neutrophil. ^*<i>P</i><0.05, relative to baseline, ^&<i>P</i><0.05, relative to high altitude values, ^#<i>P</i><0.05, relative to 3^rd day values, ̂<i>P</i><0.05, relative to 50^th day values, ^△<i>P</i><0.05, relative to the control group.</p

pH, PaO2, PaCO2, and SaO2 of subjects after returning to Kunming.

<p>Data are given as the mean ± SD. ^*<i>P</i><0.05, relative to baseline, ^&<i>P</i><0.05, relative to high altitude values, ^△<i>P</i><0.05, relative to the control group</p

Incidence of symptoms of subjects after returning to Chongqing or Kunming after visiting high altitudes.

<p>Data are given as the number (%). ^*<i>P</i><0.05 relative to the Kunming group, ^#<i>P</i><0.05, relative to 3^rd day values, ^&<i>P</i><0.05, relative to 50^th day values.</p

Serum CK, CK-MB, and LDH of subjects after returning to Kunming.

<p>Data are given as the mean ± SD. CK  =  creatine kinase, CK-MB  =  creatine kinase–MB, LDH  =  lactate dehydrogenase. ^*<i>P</i><0.05, relative to baseline, ^&<i>P</i><0.05, relative to high altitude values, ^#<i>P</i><0.05, relative to 3^rd day values, ̂<i>P</i><0.05, relative to 50^th day values, ^△<i>P</i><0.05, relative to the control group.</p

Rates of change of CK, CK-MB, and LDH.

<p>Data are presented as mean ± SD. The rate of change rate of (A) CK, (B) CK-MB, (C) LDH. Values recorded in subjects at high altitudes served as the baseline. Rate of change 1 = (value on 3rd day-value at high altitudes)/value at high altitudes×100%; rate of change 2 = (value on 50th day-value at high altitudes)/value at high altitudes×100%; rate of change 3 = (value at 100th day-value at high altitudes)/value at high altitudes×100%. Rates of change 1, 2, and 3 were not significantly different between the Chongqing group and Kunming group (<i>P</i>>0.05).</p