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Association Between Physical Fitness, Parasympathetic Control, and Proinflammatory Responses to Mental Stress

From the Department of Epidemiology and Public Health, University College London, London, UK.

View larger version (14K): [in this window] [in a new window]   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.

View larger version (10K): [in this window] [in a new window]   Figure 2. Association between physical fitness and heart rate variability (HRV) responses to mental stress. Data are presented as mean ± standard error of the mean values, adjusted for age, gender, body mass index, employment grade, smoking, alcohol, and baseline HRV. Physical fitness tertiles based on heart rate response to cycling ergometry exercise at a standardized workload.