Figure 5. Relationship between practice and blister fluid cytokine changes from pre- to post-intervention differs by group.

We observed interactions between group and practice in relation to blister fluid cytokine levels (TNF-α: sr = −.35, p = .028; IL-8: sr = −.17, p = .334). In the MBSR group (red), number of minutes practiced during the 8-wk intervention is (non-significantly) negatively correlated with the reduction in blister fluid (a) TNF-α (MBSR: r = −.28, p = .16; HEP: r = .42, p = .12) and (b) IL-8 levels (MBSR: r = −.20, p = .33; HEP: r = .17, p = .59) from T1 to T2, whereas these relationships are positive for the HEP group (green).