Table 2 Results for effects of each intervention and within-participants comparisons.

From: The effects of barbell resistance exercise on information processing speed and conflict-related ERP in older adults: a crossover randomized controlled trial

Variable

Resistance exercise

Mean (SE)

Stretching exercise

Mean (SE)

Contrast

Mean [95% CI; p value; Cohen’s d; within participant Pearson correlation coefficient (p value)]

Behavioral outcomes (n = 24)

   

Reaction time (ms)

 − 33 (9)

 − 17 (6)

 − 16 [− 30 to − 2; .030; − 0.47; .625 (.001)]

Interference score (ms)

5 (10)

0 (10)

6 [− 12 to 23; 515; 0.13; .612 (.001)]

ERP outcomes (n = 21)

   

N2b local peak amplitude (μv)

   

Congruent condition

2.210 (0.409)

 − 0.080 (0.659)

2.290 [0.504 to 4.075; .015; 0.58; − .241 (.292)]

Incongruent condition

2.232 (0.381)

 − 0.589 (0.695)

2.291 [0.439 to 4.142; .018; 0.56; − .302 (.183)]