Table 5.
Impact of HRV adjustment on the effect sizes in repeated measures analyses
| Mean | SD | Mean | SD | NTR | ||||||||
| HR | Heart period | |||||||||||
| Sleep | 63.2 | 8.3 | 979.9 | 134.3 | ||||||||
| Leisure | 70.8 | 10.0 | 878.9 | 128.2 | ||||||||
| Work | 84.9 | 10.7 | 747.7 | 103.2 | Mean | SD | Δ (from sleep level) | Effect size | ||||
| SDNN | cSDNN | cvSDNN | SDNN | cSDNN | cvSDNN | SDNN | cSDNN | cvSDNN | ||||
| Sleep | 91.8 | 28.0 | 503.8 | 114.6 | 9.3 | 2.1 | ||||||
| Leisure | 76.0 | 28.4 | 324.6 | 103.7 | 8.6 | 2.7 | –15.7 | –180.5 | –0.71 | –0.56 | –1.57 | –0.33 |
| Work | 76.6 | 21.4 | 317.0 | 69.7 | 10.2 | 2.2 | –16.3 | –191.9 | +0.81 | –0.58 | –1.67 | +0.38 |
| RMSSD | cRMSSD | cvRMSSD | RMSSD | cRMSSD | cvRMSSD | RMSSD | cRMSSD | cvRMSSD | ||||
| Sleep | 52.9 | 26.5 | 604.3 | 263.6 | 5.3 | 2.3 | ||||||
| Leisure | 45.5 | 25.6 | 497.4 | 241.6 | 5.0 | 2.5 | –7.3 | –110.7 | –0.24 | –0.28 | –0.42 | –0.10 |
| Work | 32.8 | 15.6 | 257.0 | 104.5 | 4.3 | 1.8 | –20.9 | –355.9 | –1.06 | –0.79 | –1.35 | –0.45 |
| pvRSA | cpvRSA | cvpvRSA | pvRSA | cpvRSA | cvpvRSA | pvRSA | cpvRSA | cvpvRSA | ||||
| Sleep | 54.8 | 24.7 | 195.1 | 85.2 | 5.6 | 2.4 | ||||||
| Leisure | 51.5 | 24.9 | 218.9 | 99.8 | 5.8 | 2.6 | –3.3 | +23.4 | +0.23 | –0.13 | +0.27 | +0.10 |
| Work | 40.3 | 15.8 | 153.4 | 55.7 | 5.4 | 1.9 | –14.5 | –41.6 | –0.22 | –0.59 | –0.49 | –0.09 |
| Mean | SD | Mean | SD | MIDUS | ||||||||
| HR | Heart period | |||||||||||
| Baseline | 72.2 | 10.8 | 850.5 | 129.9 | ||||||||
| Math | 75.4 | 11.2 | 814.2 | 124.5 | ||||||||
| Stroop | 76.3 | 11.4 | 804.2 | 123.3 | Mean | SD | Δ (from baseline level) | Effect size | ||||
| SDNN | cSDNN | cvSDNN | SDNN | cSDNN | cvSDNN | SDNN | cSDNN | cvSDNN | ||||
| Baseline | 36.2 | 17.8 | 145.0 | 65.6 | 4.2 | 1.9 | ||||||
| Math | 30.6 | 15.0 | 125.5 | 56.0 | 3.7 | 1.7 | –5.4 | –24.3 | –0.49 | –0.31 | –0.37 | –0.26 |
| Stroop | 29.8 | 15.6 | 107.1 | 50.6 | 3.7 | 1.7 | –6.2 | –42.6 | –0.53 | –0.35 | –0.65 | –0.28 |
| RMSSD | cRMSSD | cvRMSSD | RMSSD | cRMSSD | cvRMSSD | RMSSD | cRMSSD | cvRMSSD | ||||
| Baseline | 23.8 | 17.9 | 225.7 | 148.9 | 2.7 | 1.9 | ||||||
| Math | 21.4 | 15.8 | 224.0 | 133.1 | 2.6 | 1.7 | –2.4 | –3.3 | –0.18 | –0.13 | –0.02 | –0.10 |
| Stroop | 19.5 | 15.1 | 194.0 | 128.7 | 2.4 | 1.6 | –4.3 | –32.9 | –0.38 | –0.24 | –0.22 | –0.20 |
| HF | cHF | cvHF | HF | cHF | cvHF | HF | cHF | cvHF | ||||
| Baseline | 344.4 | 760.4 | 17,607 | 32,784 | 38.1 | 79.8 | ||||||
| Math | 269.0 | 525.5 | 17,406 | 27,536 | 30.9 | 56.9 | –68.8 | 137 | –6.50 | –0.09 | +0.001 | –0.08 |
| Stroop | 203.7 | 500.3 | 20,903 | 42,557 | 23.5 | 54.4 | –130.8 | 3,423 | –13.68 | –0.17 | +0.10 | –0.17 |
Δ denotes the within‐individual change from sleep level (NTR) or baseline level (MIDUS). It can differ slightly from the subtraction of the condition means, because only subjects with complete data were used for the change scores. Effect size denotes the average size of the within‐individual change expressed as proportion of the standard deviation during the sleep (NTR) or baseline condition. c[HRV] adjustment by Monfredi method; cv[HRV] adjustment by van Roon method. Unadjusted effect sizes, effect size on c[HRV] adjustment, effect size on cv[HRV] adjustment.