Table 1 Statistics (mean ± SD) of anthropometric and hemodynamic characteristics of participants (n = 36) during head down Tilt(HDT) bed best(BR).

From: Quantitative ultrasound image assessment of the optic nerve subarachnoid space during 90-day head-down tilt bed rest

 

Pre

HDT30d

HDT60d

HDT90d

R + 7d

R + 14d

R + 30d

R + 90d

R + 180d

BMI, kg/m2

22.2 ± 2.12

21.47 ± 0.35

21.46 ± 0.35

21.29 ± 0.34

–

–

22.36 ± 0.34

21.79 ± 0.35

21.87 ± 0.35

Head circumference, cm

–

55.89 ± 1.96

–

55.63 ± 2.15

55.24 ± 1.65

54.97 ± 1.82

54.67 ± 1.74

54.99 ± 1.91

54.74 ± 1.85

Waist circumference, cm

–

75.01 ± 6.74

74.89 ± 5.81

74.82 ± 6.5

74.82 ± 6.91

75.86 ± 6.86

74.44 ± 5.99

73.65 ± 5.88

76.06 ± 5.93

Hipline, cm

–

87.97 ± 5.85

88.97 ± 4.62

89.58 ± 3.7

90.71 ± 4.0

91.06 ± 3.99

90.49 ± 3.82

88.26 ± 3.88

91.94 ± 3.88

MBP, mmHg

86.36 ± 9.14

89.39 ± 1.1

87.98 ± 1.25

88.55 ± 1.09

86.89 ± 1.09

83.98 ± 0.84

82.02 ± 0.87

84.08 ± 1.04

81.29 ± 1.07

Heart Rate, bpm

77.78 ± 10.04

62.5 ± 13.22

63.81 ± 8.5

62.69 ± 8.38

66.94 ± 9.78

65.53 ± 10.19

64.08 ± 8.07

73.06 ± 9.51

73.11 ± 9.79

  1. The bold one indicated significantly difference compared with 180-day at recovery time(p < 0.05) (ANOVA).
  2. Body Mass Index =weight/height2, MBP(Mean Blood Pressure)=1/3×systolic blood pressure+2/3×diastolic blood pressure.
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