Fig. 1
Acute maternal food intake, body weight gain and whole-body plethysmography endpoints at gestation day 5 and 6. The design of the study (a). Food intake (b) and body weight change (c) were assessed during the exposure period on gestation days 5 and 6 and are presented as both the 24-h difference and 48-h difference (n = 14–16/group). Breathing frequency, minute volume, and Penh (d) were assessed using whole body plethysmography following the second ozone exposure on GD 6 (30-min–1-h post-exposure; n = 8–10/group). Data are presented as mean ± standard error and were analyzed by Dunnett’s post-test within a two-way ANOVA. #p < 0.10, *p < 0.05, ***p < 0.001 vs. A + Q group. Abbreviations: whole body plethysmography (WBP), gestation day (GD), air + quiet (A + Q), air + noise (A + N), ozone + quiet (O3 + Q), ozone + noise (O3 + N)