Statistical analysis plan
Pain, pain
POSITIVE
First, we checked whether the pain activation procedure had a similar effect in both groups by performing a two-way mixed-design ANOVA 2 (experimental group: distraction, rumination) × 2 (measure time: 1—baseline, 2—after physical activity) on both Pain VASs.In order to test the rumination vs. distraction induction on pain we planned to perform a two-way mixed-design ANOVA 2(experimental group: distraction, rumination) × 2(measure time: 2—after physical activity, 3—after experimental induction). In order to check this effect on affect, we computed a two-way mixed-design ANOVA 2(experimental group: distraction, rumination) × 2(measure time: 1—baseline, 3—after experimental induction). Additionally, a two-way mixed-design ANOVA 2 (experimental group: distraction, rumination) × 2 (measure time: 1—baseline, 3—after experimental induction) was computed on the MRSI score in order to check the efficiency of experimental manipulation in inducing rumination. The significance threshold was set at Descriptive statistic – mean and standard deviation for pain, affect, and state rumination measured at time 1, 2 and 3 for each group.Pain Vas—Pain Analogue Visual Scale; PANAS—Positive and Negative Affect Schedule, MRSI—Momentary Rumination State Inventory.