Chronobiol Med > Volume 5(1); 2023 > Article |
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Funding Statement
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. NRF-2014R1A1A3051724).
Conflicts of Interest
Availability of Data and Material
The datasets generated or analyzed during the study are available from the corresponding author on reasonable request.
Author Contributions
Conceptualization: Sookyoung Park. Data curation: Sookyoung Park. Formal analysis: Sookyoung Park. Investigation: Sieun Park. Methodology: Sookyoung Park. Software: Sieun Park. Validation: Sieun Park. Writing—original draft: Sieun Park, Sookyoung Park. Writing—review & editing: Sieun Park, Sookyoung Park.
Variables | Good sleeper group | Poor sleeper group | z | p |
---|---|---|---|---|
Reaction time (ms) | 859.12±148.46 | 964.40±167.75 | -1.111 | 0.266 |
Error number | 1.33±1.39 | 1.93±2.30 | -0.947 | 0.344 |
Variables | Good sleeper group | Poor sleeper group | z | p | |
---|---|---|---|---|---|
Mean HR (bpm) | |||||
Resting state | 82.91±8.81 | 90.59±15.09 | -1.217 | 0.223 | |
Reaction task state | 86.78±9.32 | 88.01±13.72 | -0.053 | 0.958 | |
Difference value | 3.87±4.08 | -2.58±2.52 | -2.805 | 0.005** | |
SDNN (ms) | |||||
Resting state | 54.33±17.06 | 45.76±22.01 | -1.006 | 0.315 | |
Reaction task state | 53.73±15.04 | 57.74±32.63 | -0.265 | 0.791 | |
Difference value | -0.60±14.15 | 11.99±13.54 | -1.852 | 0.064 | |
RMSSD (ms) | |||||
Resting state | 37.95±17.82 | 31.67±14.12 | -0.370 | 0.711 | |
Reaction task state | 35.01±15.39 | 39.43±16.89 | -0.582 | 0.560 | |
Difference value | -2.94±11.89 | 7.76±14.18 | -1.535 | 0.125 | |
TP (ms2) | |||||
Resting state | 2526.06±1385.01 | 2151.66±2011.21 | -0.794 | 0.427 | |
Reaction task state | 2853.49±1884.56 | 3155.53±2963.69 | -0.053 | 0.958 | |
Difference value | 327.44±1389.17 | 1003.86±1113.71 | -1.006 | 0.315 | |
HF (ms2) | |||||
Resting state | 547.43±603.02 | 218.91±264.53 | -2.276 | 0.023* | |
Reaction task state | 342.83±256.70 | 339.88±284.04 | -0.159 | 0.874 | |
Difference value | -204.60±400.56 | 120.96±168.81 | -2.064 | 0.039* | |
LF (ms2) | |||||
Resting state | 852.05±408.60 | 712.21±501.91 | -0.688 | 0.491 | |
Reaction task state | 687.64±232.11 | 872.62±774.92 | -0.159 | 0.874 | |
Difference value | -164.41±329.90 | 160.41±336.80 | -1.747 | 0.081 | |
VLF (ms2) | |||||
Resting state | 1087.02±1129.65 | 1180.11±1424.37 | -0.476 | 0.634 | |
Reaction task state | 1782.20±1892.70 | 1887.94±2015.16 | -0.159 | 0.874 | |
Difference value | 695.18±1167.16 | 707.82±702.11 | -0.265 | 0.791 | |
LF/HF ratio | |||||
Resting state | 2.46±1.62 | 4.71±3.70 | -1.429 | 0.153 | |
Reaction task state | 2.83±1.60 | 2.41±1.60 | -0.688 | 0.491 | |
Difference value | 0.38±1.44 | -2.30±2.66 | -2.276 | 0.023* | |
CVRR (%) | |||||
Resting state | 7.41±2.10 | 6.52±2.26 | -0.900 | 0.368 | |
Reaction task state | 7.63±1.70 | 7.90±3.47 | -0.265 | 0.791 | |
Difference value | 0.23±2.05 | 1.39±1.64 | -1.429 | 0.153 |
ANS, autonomic nervous system; HR, heart rate; SDNN, standard deviations of all NN intervals; RMSSD, root mean square of successive differences between adjacent NN intervals; TP, total power; HF, high frequency band; LF, low frequency band; VLF, very low frequency band; CVRR, coefficient of variation of R-R interval; Difference value, reaction task state – resting state
Variables |
PSQI-K |
|
---|---|---|
R | p | |
Resting state | ||
Mean HR | 0.287 | 0.282 |
SDNN | -0.190 | 0.482 |
RMSSD | -0.270 | 0.312 |
TP | -0.121 | 0.654 |
HF | -0.667 | 0.005** |
LF | -0.118 | 0.663 |
VLF | -0.026 | 0.924 |
LF/HF ratio | 0.608 | 0.012* |
CVRR | -0.185 | 0.493 |
Reaction task state | ||
Mean HR | 0.027 | 0.920 |
SDNN | -0.046 | 0.867 |
RMSSD | -0.009 | 0.973 |
TP | 0.038 | 0.889 |
HF | -0.091 | 0.737 |
LF | 0.187 | 0.489 |
VLF | 0.014 | 0.960 |
LF/HF ratio | 0.191 | 0.478 |
CVRR | 0.023 | 0.933 |
ANS, autonomic nervous system; HR, heart rate; SDNN, standard deviations of all NN intervals; RMSSD, root mean square of successive differences between adjacent NN intervals; TP, total power; HF, high frequency band; LF, low frequency band; VLF, very low frequency band; CVRR, coefficient of variation of R-R interval; PSQI-K, Korean version of the Pittsburgh Sleep Quality Index