Cognitive Performance and Heart Rate Variability: The Influence of Fitness Level
Figure 2
Main effect of Block for the high-fit and low-fit groups.
Mean RR intervals in milliseconds (ms) for the high-fit and low-fit groups in each of the blocks of the three tasks (Block 1 = between 0 and 200 seconds of each task; Block2 = between 200 and 400 seconds of each task; Block 3 = between 400 and 600 seconds of each task). Bars represent standard errors of the mean. *p<.01; **.05<p<.10.