Table 3

Blood pressure, body temperatures, and skin perfusion at thermoneutral temperature and during exposure to mild cold, before and after cold acclimation

VariableBefore cold acclimationAfter cold acclimation
ThermoneutralMild coldΔThermoneutralMild coldΔ
Systolic blood pressure (mmHg)117.4 ± 7.9130.8 ± 5.9*13.4 ± 7.6117.2 ± 5.8133.8 ± 7.3*16.7 ± 8.5
Diastolic blood pressure (mmHg)71.4 ± 8.085.9 ± 9.7*14.5 ± 9.673.8 ± 10.087.1 ± 8.6*13.4 ± 4.9
Mean arterial pressure (mmHg)88.7 ± 7.5102.7 ± 7.3*13.9 ± 7.188.9 ± 8.6102.9 ± 7.6*14.0 ± 5.9
Heart rate (bpm)64.2 ± 8.959.8 ± 6.6*−4.3 ± 3.968.4 ± 8.362.7 ± 6.8*−5.8 ± 5.5
Suit temperature (°C)33.2 ± 0.624.1 ± 2.0*−6.2 ± 1.930.4 ± 0.524.4 ± 2.2*−5.9 ± 2.2
Core temperature (°C)37.0 ± 0.337.1 ± 0.60.1 ± 0.536.9 ± 0.236.9 ± 0.30.0 ± 0.2
Mean skin temperature (°C)34.7 ± 1.329.5 ± 1.5*−5.1 ± 2.035.3 ± 0.330.0 ± 2.1*−5.2 ± 2.3
Skin perfusion (relative %)
 Hand10017.5 ± 15.7*−82.5 ± 15.710013.2 ± 6.1*−86.8 ± 6.1
 Underarm10057.0 ± 23.5*−43.0 ± 23.510032.9 ± 22.3*−67.1 ± 22.3
  • Data are expressed as mean ± SD.

  • *P < 0.01, mild cold vs. thermoneutral conditions.