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Figure 1. Association between physical fitness and the change in tumor necrosis factor (TNF)-
(upper panel) and interleukin (IL)-6 (lower panel) between baseline and poststress samples. Data are presented as mean ± standard error of the mean values, adjusted for age, gender, body mass index, employment grade, smoking, alcohol, and basal levels of inflammatory cytokines. Physical fitness tertiles based on heart rate response to cycling ergometry exercise at a standardized workload.
