Table 2. Multiple linear regression analyzing the influence of competitive-anxiety on HRV variance in swimmers. Variable Block B R R² R²* p Cognitive anxiety 1 .14 -.42 .18 .17 .01 Somatic anxiety 2 .17 -.56 .31 .28 .02 Self-confidence 3 .11 .37 .14 .12 .34 R²* = R² adjusted.