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Table 4 Clinical measurement summary by route (Downtown and Residential) of post- and pre- cycling clinical measurements

From: Particulate matter exposure and health impacts of urban cyclists: a randomized crossover study

Variable Downtown route Residential route ∆ Downtown - ∆ Residential
Change (post-pre)
Mean [∆ Downtown]
(95% CI)
Change (post-pre)
Mean [∆ Residential]
(95% CI)
Mean difference (95% CI)
Endothelial Function- EndoPAT™
 RHI −0.18 (−0.46, 0.11) 0.25 (0.03, 0.47) −0.39 (−0.77, −0.017)
Spirometry (unit)
 FVC (mL) 46 (−3.8, 97) 21 (−84, 130) 28 (−77, 134)
 FEV1 (mL) 46 (6.6, 86) 49 (−11, 110) −0.81 (−62, 64)
 FEF25–75 (mL/s) 110 (23, 190) 82 (−59, 220) 0.024 (−0.13, 0.18)
Blood Measures (unit)
 CRP (μg/dL) 8.8 (−12, 29) 6.6 (−30, 43) 2.4 (−44, 49)
 IL-6 (pg/ml) 0.55 (−0.59, 1.68) −0.61 (−1.8, 0.57) 1.13 (−0.82, 3.1)
 8-OHdG (ng/ml) −0.00045 (−0.040, 0.040) −0.031 (−0.071, 0.0082) 0.029 (−0.023, 0.081)
  1. Paired spirometry data was missing for 2 participants and paired endothelial function data missing for 4