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1 International Ergonomics Association 1 2 variability of heart rate s R R R R electrocardiogram: ECG R R R R R R R 1 R coefficient of variation 5 R R 27

2 1 120s s Yule-Walker Burg 2 2 Burg Maximum Entropy Method: MEM sin cos FFT N

3 Burg Hz 0.25Hz Hz 0.25Hz Min Min R R Hz LF Hz HF 0.10Hz LF 0.25Hz HF 1 29

9 10 11 0.04Hz 0.04Hz 0.15Hz LF 0.15Hz 0.

4 Hz 0.04Hz 0.15Hz LF 0.15Hz 0.40Hz HF LF HF LF HF LF HF 14 LF HF 20 R R 3 20 R R R R R R R R T.K.K.1876a, R R 3 R R A 30

5 lx R R 4 R R 20 R R B 63.87sec/100 D sec/ sec/ B sec/100 D sec/ sec/ R R sec/ sec/100 t t=2.875, df=4, p< R R 20 R R C B R R D B R R t t=2.941,df=4,p <0.05 R R R R 5 C B 6 C R R sec/ sec/100 7 B R R sec/ sec/100 R R sec/100 C 43 sec/100 A D 36.8 sec/ sec/100 C 37 sec/100 A 32.0 sec/ t 31

6 4 R R 5 R R 7 B 2 R R sec/100 A B C D E t=3.639, df=4, p<0.05 R R C R R R R 32

7 29 sec/ sec/ R R R R 36.8 sec/ sec/ R R 8 A 4 2 R R LF HF 9 9 LF HF D A LF HF A LF HF A E LF HF LF HF D LF HF LF HF 33

8 C LF HF D 1.47 C LF HF LF HF LF HF LF HF t t=4.342, df=4, p< LF HF LF HF R R 36.8 sec/ sec/ R R 4 10 R R LF HF LF LF/HF 14 LF/HF LF HF LF HF LF HF

9 18 R R R R LF HF R R LF/HF R R LF/HF R R 1 International Ergonomics Association: 35

10 Triennial Report , IEA, p.6, International Organization for Standardization: ISO , Ergonomic principles related to mental work-load -- General terms and definitions, p.1-5, p p vol.44 No.6 p CQ p p CQ p :,, Vol.25 No.3, p , Pomerantz, B. et al. Assessment of autonomic function in human by heart rate spectral analysis, American Journal of Physiology, Vol.17, p.h151-h153, Sayers, B. McA. Analysis of heart rate variability, Ergonomics, Vol.16 No.1, p.17-32, vol.42 No4 p p vol.44 No Vol.39 No.9 p p , p Rimoldi, O., Pierini S., Ferrari A., et al.: Analysis of short-term oscillations of R-R and arterial pressure in conscious dogs, American Journal of Physiology, vol.258 No.4, p.h967-h976, p.10-97, p , p.44-45, p ,

11 A Study on Heart Rate Variability at Rest in a Sitting Position HONDA Kaoru Associate Professor, Psychology & Information, Cultural Systems Course To adequately grasp both physical strain and reaction quantitatively and objectively, it is necessary to compare heart rate variation before and after starting a task with the heart rate at rest before a given task has started. This study measured the heart rate interval (R-R interval) at rest in a sitting position, and also analyzed to what extenttheheart rate varied between eyes-opened and eyesclosed status. The considerable conditions are then accounted for if the heart rate at rest is used as a reference. Results indicated that when the heart rate at rest is measured, the eyesshould be closed to reduce rate variation. In addition, temporal variation of the heart rate at rest should also be checked, in addition to the heart rate just before the start of the workload in order to determine what rate should be used as, "the heart rate at rest". Keywords: heart rate variability, rest, R-R interval, eyes-opened, eyes-closed 37

01_渡部先生_21-2.indd

01_渡部先生_21-2.indd Wang & Moffit, SSF ; Wang and Moffit ; Purcell, ; ; ; Grice, Purcell, Wang & Moffit, Wang & Moffit, Purcell, :.. cm :.. kg :.. cm :.. kg t., p >. t.., p >. SONY HDR-CXV, HDR-CXV f/sec . m m PC DKH Frame-DIAS