Table 3.
Pearson Correlations Among 6- and 18-Month Changes in the SF-36 Vitality Score, Inflammation, and Physical Activity
| N | Steps/d | PAEE | Light PA | Mod–Vig PA | Log CRP | Log IL-6 | ||
|---|---|---|---|---|---|---|---|---|
| SF-36 Vitality score | 6-monthΔ | 87 | 0.41 (p < .01) | 0.40 (p < .01) | 0.24 (p < .05) | 0.39 (p < .01) | −0.28 (p = .01) | −0.29 (p = .01) |
| 18-monthΔ | 39 | 0.34 (p < .05) | 0.30 (p = .08) | 0.24 (p = .17) | 0.37 (p < .05) | −0.14 (p = .43) | −0.26 (p = .13) | |
| Log CRP | 6-monthΔ | 88 | −0.06 | −0.01 | −0.04 | −0.05 | — | — |
| 18-monthΔ | 39 | −0.04 | 0.03 | −0.03 | −0.14 | — | — | |
| Log IL-6 | 6-monthΔ | 88 | −0.16 | −0.16 | −0.05 | −0.12 | — | — |
| 18-monthΔ | 39 | −0.32 (p = .07) | −0.27 (p = .12) | −0.36 (p < .05) | −0.15 | — | — | |
Note: Change scores calculated as Post-value at 6- or 18-months minus Pre-value. SF-36 Vitality score (greater negative change indicates more fatigued). Δ = 6-month or 18-month changes from baseline;
CRP = C-reactive protein; IL-6 = interleukin-6; Mod–Vig PA = moderate or vigorous physical activity; PAEE = physical activity energy expenditure.