Figure 2.

Sedentary aging is characterized by relatively few alterations in circulating postexercise cytokines and chemokines. (A) Factors significantly altered by exercise compared to rest in the young sedentary, young physically active, old sedentary and old physically active subjects. (B) A venn diagram comparison of plasma humoral factors that are significantly altered by acute aerobic exercise in young and old subjects that are sedentary or physically active. Green indicates an increase from baseline and red indicates a decrease. Overlap of the circles indicates a response common to 2 or more groups. Data in (A) are mean ± SEM. *Significantly different (p < .05) from respective resting sample. ND = not detectable in 3 or more subject samples.