Table 1

Mean (SD) with 95% CI of venous pressure (VP) in both limbs and reactive oxygen metabolites (ROS) before and after work in the two groups; the mean percentage changes between pre-work and after-work level in the two groups are also shown

Group 1Group 2p
Mean (SD)95% CIMean (SD)95% CI
VP before (mm Hg) Left: 55.64 (19.97)Left: 50.57 to 60.71Left: 56.33 (16.70)Left: 52.16 to 60.50Left: NS
Right: 56.05 (21.64)Right: 50.55 to 61.54Right: 56.23 (18.14)Right: 51.74 to 60.72Right: NS
VP after (mm Hg) Left: 83.39 (17.57)Left: 78.92 to 87.85Left: 75.39 (16.70)Left: 71.15 to 79.63Left: 0.01
Right: 84.60 (17.54)Right: 80.14 to 89.05Right: 76.54 (17.30)Right: 72.25 to 80.82Right: 0.01
p (before v after) Left: <0.0001Left: <0.0001
Right: <0.0001Right: <0.0001
VP Δ% Left: 70.28 (79.22)Left: 50.16 to 90.40Left: 40.95 (40.21)Left: 30.90 to 50.99Left: <0.01
Right: 77.06 (95.67)Right: 52.77 to 101.36Right: 45.71 (34.08)Right: 34.08 to 57.33Right: <0.05
ROS (U) before 285.10 (69.82)266.30 to 301.73253.94 (66.70)236.49 to 269.50<0.05
ROS (U) after 338.51 (82.76)315.60 to 357.88263.09 (63.53)246.25 to 277.78<0.0001
P (before v after) <0.0001NS
ROS Δ% 20.90 (25.33)14.47 to 27.349.10 (38.17)−0.36 to 18.56<0.05