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Fig. 1 | Environmental Health

Fig. 1

From: Exposure to air pollution near a steel plant is associated with reduced heart rate variability: a randomised crossover study

Fig. 1

Heart Rate and Time Domain of Heart Rate Variability differed significantly at the Plant site when compared to the College site. Data are expressed as the mean of responses measured from the afternoon ambulatory ECG recording time point. Error bars represent the 5 and 95% confidence limits. Mixed effects linear regressions showed that the increase in heart rate at the Plant Site, when compared to the College Site was significant (* = p < 0.05). The decreases in SDNN and pNN50 at the Plant Site, when compared to the College Site also were significant

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Environmental Health

ISSN: 1476-069X