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. 2022 Mar 9;17(3):e0264200. doi: 10.1371/journal.pone.0264200

Table 6. Heat-map comparing within-participant differences in mean HRV for non-stressor intervals vs. stressor intervals, excluding intervals during physical activity boutsa,b.

Participantc RMSSDd STD RRe Ln LFf Ln HFg
C10054 7.37 1.70 -0.67 0.98
C10082 3.20 2.80 0.20 0.46
C10113 -9.12 -10.30 -0.84 -0.66
C10391 -7.07 -3.37 -0.03 -0.72
C10519 -9.79 -4.76 0.05 0.14
C10543 7.03 5.35 0.24 0.76
C10638 -5.47 -3.37 -0.47 -0.48
C10742 -2.42 -5.55 -0.18 -0.09
C10860 18.02 5.74 0.60 0.96
C10904 -7.11 -9.42 -0.32 0.16
C11081 -0.35 -0.92 -0.43 -0.34
C11116 7.00 8.57 0.49 0.44
C14001 -1.38 -2.89 -0.39 -0.18
C20228 8.44 6.91 0.80 0.52
C20240 -2.52 -3.04 -0.29 -0.56
C20304 5.06 3.86 -0.17 0.63
C20332 -9.86 -7.99 -0.23 0.10
C24002 -5.61 -5.21 0.45 0.84
C24008 3.95 0.81 0.02 0.40
C24010 -0.07 0.82 0.10 -0.20
C24037 -21.53 -20.26 -0.75 -0.76
C30066 -0.14 2.43 0.53 0.14
C30265 -8.05 -10.09 0.25 0.23
C30539 -28.37 -21.02 -0.77 -1.45
C30635 -15.85 -8.40 -0.33 -1.20
C34000 -14.71 -15.35 -0.35 -0.81
C40120 3.47 -0.53 -0.13 0.02
C40605 3.52 2.63 0.15 -0.19
C40636 -1.48 4.69 0.24 -0.46
C40661 -0.03 -2.37 -0.48 0.31
C40740 -1.47 0.39 0.09 -0.10
C40745 -2.61 -3.99 -0.23 -0.51
C40840 -2.55 -1.50 -0.24 -0.34

aRed cells represent values > 2 SD below the group mean HRV difference, orange cells represent 1–2 SD below the group mean HRV difference, yellow cells represent <1 SD below or above the group mean HRV difference, light green cells represent 1–2 SD above the group mean HRV difference, and dark green cells represent >2 SD above the group mean HRV difference.

bAn active interval is defined as the presence of a Freedson Bout when responding to an EMA survey.

cParticipants who reported at least one stressor during the study period with valid HRV intervals (n = 33).

dMean difference (mean HRV for non-stressor intervals—mean HRV for stressor-intervals, excluding intervals with physical activity) = 0.002 ms; SD of mean difference = 2.16 ms.

eMean difference = 0.28 ms, SD of mean difference = 1.91 ms.

fMean difference = 0.14, SD of mean difference = 0.11.

gMean difference = 0.14, SD of mean difference = 0.15.