TABLE 1: Air volume measurements (means ± SD and mean errors) using three pneumotachometer settings of the Aerosport KB1-C ambulatory metabolic analyzer (ten tests each) in reference to volumes of air injected with a calibration syringe.3 2.63 ± 0.22 (12.3%) 1.89 ± 0.37 (37.0%) 0.15 ± 0.05 (95.0%)
Calibration Low Flow Medium Flow High Flow (L/min) mean ± SD mean error mean ± SD mean error mean ± SD mean error
6 5.07 ± 0.08 (15.5%) 5.82 ± 0.15 (3.0%) 0.65 ± 0.29 (89.2%)
9 8.64 ± 0.07 (4.0%) 8.84 ± 0.08 (1.8%) 2.87 ± 0.57 (68.1%)
18 17.37 ± 0.07 (3.5%) 17.47 ± 0.09 (2.9%) 15.46 ± 0.44 (14.1%)
27 26.31 " 0.41 (2.8%) 27.12 ± 0.55 (1.5%) 24.61 ± 0.21 (8.8%)
36 34.83 " 0.27 (3.2%) 36.94 ± 0.47 (2.6%) 33.06 ± 0.23 (8.2%)
45 43.88 " 0.08 (2.5%) 45.38 ± 0.78 (1.5%) 41.62 ± 0.22 (7.5%)
54 48.33 " 3.71 (10.5%) 53.53 ± 0.32 (0.9%) 50.24 ± 0.41 (7.0%)
63 50.81 " 0.74 (19.3%) 62.40 ± 0.27 (1.0%) 59.44 ± 0.37 (5.6%)
72 71.61 ± 0.21 (0.5%) 69.22 ± 0.29 (3.9%)
81 80.48 ± 0.24 (0.6%) 78.44 ± 0.26 (3.2%)
90 89.90 ± 0.60 (0.5%) 88.01 ± 0.46 (2.2%)
99 99.79 ± 0.41 (0.8%) 98.54 ± 0.31 (0.5%)
108 106.81 ± 1.10 (1.1%) 106.72 ± 0.40 (1.2%)
117 111.65 ± 1.51 (4.6%) 115.59 ± 0.41 (1.2%)
126 116.52 ± 1.49 (7.5%) 124.01 ± 0.36 (1.6%)
135 133.90 ± 0.60 (0.8%)
144 141.84 ± 0.95 (1.5%)
153 149.50 ± 0.34 (2.3%)
162 160.76 ± 0.57 (0.8%)
171 169.91 ± 0.56 (0.6%)
180 179.54 ± 2.83 (1.3%)
189 186.80 ± 1.68 (1.2%)
198 194.36 ± 1.58 (1.8%)
207 200.63 ± 1.58 (3.1%)
216 208.76 ± 2.78 (3.3%)