... between change in heartrateand autonomic nervous system activity was proposed by Akselrod et al [12], who suggested that the low-frequency component of the change in heartrate reflects the ... measured the heartrate of test subjects as a time series while they were experiencing a driving simulator that combined a motion base and an immersive VR system We used the heartrate to infer ... 0.46 None Yes "Yes" including "childhood" and "occasionally" in Table (no sign and 3500-ms interval conditions) at phases 4, and 10 at p < 0.1, and 5, 6, 7, and at p < 0.05 It also revealed a significant...
... tsunami survivors [8] and had seven years of experience in using a polygraph to record heartratevariabilityand respiration (i) Autonomic and respiratory variables Heartratevariability was assessed ... them and hence were not added The absence of change in the heartratevariability may be related to the yoga program and the yoga breathing techniques in particular The breath rateandheartvariability ... Multiple t-tests for paired and unpaired data (i) Autonomic and respiratory variables No significant changes were observed in the heartratevariability (HRV) and breath rate of both groups The group...
... consumption, heart rate, andheartratevariability in men Heart 2002; 88(6): 641-2 338 Ryan SM, Goldberger AL, Pincus SM, Mietus J, Lipsitz LA Gender- and age-related differences in heartrate dynamics: ... 2002; 22(5): 408-14 172 Kamath MV and Fallen EL Correction of heartratevariability signal for ectopics and missing beats In: Malik M, Camm AJ eds Heartratevariability Armonk, N.J.; Futura ... activity and mental stress with or without verbalization on heartratevariability J Am Coll Cardiol 2000; 35(6): 1462-9 References 214 34 Berntson GG, Stowell JR ECG artifacts andheartperiod variability: ...
... systems for the computation and derivation of HRV, and for rejection and replacement of ectopic beats and other artifacts, may lead to variations in the HRV data generated from the same ECG recordings ... the generated output for time-domain analysis is shown in Table 11-1 Figure 11-3 shows the generated FFT spectrum, as well as the values of absolute and normalized VLF, LF and HF power, and the ... Nevrokard and F-EXTRACT HRV systems, the Bland-Altman technique (Bland JM and Altman DG, 2003, 1999) was performed using Prism 4.03 for Windows (GraphPad Software Inc., San Diego, CA, USA) The Bland-Altman...
... showed the baseline foetal heartrate (fHR) as 60-70 bpm Clinical application of non-invasive foetal ECG 132 Figure 8-2: The foetal heartrate (fHR) and maternal heartrate (mHR) as displayed by ... normal and ectopic beats and thus gave an accurate measure of the true fHR The case history highlights the usefulness of non-invasive fECG in the determination of foetal heartrateand ECG and its ... intervals, and automated computation of foetal HRV parameters as well as graphical visualization of the foetal HRV power spectra Heart ratevariability of healthy foetuses 153 CHAPTER 10 HEARTRATE VARIABILITY...
... in both time and frequency domains The time domain indices measured were the mean foetal heart rate, mean RR interval, SDNN, rMSSD and pNN27 Mean heartrate is the mean foetal heartrate measured ... strip, (b) foetal and maternal heartrate traces, and (c) averaged foetal ECG complex recorded by FEMO M= maternal QRS complex; F= foetal QRS complex; Subscripts o and t = onset and termination ... ECG signal; MF’ and MF’’- 1st and 2nd derivatives containing both maternal and foetal ECG signals; F’ and F’’- Foetal ECG signals after subtraction of M from MF’ and MF’’ Materials and methods 89...
... ST segment and T wave- Animal studies……………………… 26 Foetal ST segment and T wave- Human studies……………………… 31 Chapter Heartratevariability …………………………………… 35 Definition of heartratevariability ………………………………… ... Clinical application of heartratevariability ………………………… 53 Table of Contents Chapter v Heartratevariability in the foetus………………………… 57 Development of the foetal heartrate ……………………………… 58 Regulation ... 6-5a Foetal heart rates from scalp and abdominal electrodes … …… 89 Figure 6-5b Foetal ECG complexes from scalp and abdominal electrodes … 90 Figure 6-6 Raw ECG strip, heart rates and averaged...
... Analysis and Processing: A Comprehensive Reference, Elsevier, Oxford, UK, 2003 [18] P Novak and V Novak, “Time/frequency mapping of the heart rate, blood pressure and respiratory signals,” Medical and ... for both fc (t) and var(t) related to the three frequency bands From Figures and 8, for the case shown in Figures and 6, the optimal threshold was found to be 0.0455 Hz (for LF) and 0.003 Hz2 (for ... Time-Scale Analysis, pp 373–376, Paris, France, June 1996 [14] J P Finley and S T Nugent, Heartratevariability in infants, children and young adults,” Journal of the Autonomic Nervous System, vol 51,...
... and serve as antioxidants and anti-inflammatory agents [12, 13] as well as hepatoprotectants [14] and neuroprotectants [15] However, the effects of naringin and hesperidin on metabolic rateand ... effects of p-synephrine alone and in combination with different amounts of hesperidin and naringin on: (1) resting metabolism, (2) blood pressure, (3) resting heart- rate, and (4) self-reported mood/energy ... self report rating scale After 75 min., a third and final self report rating scale was completed, and measurements of blood pressure, heart- rateand RMR were determined Statistical Analyses ANOVAs...
... (VO2) and carbon dioxide production (VCO2) The non-protein respiratory exchange ratio (RER) value was calculated from VO2 and VCO2 The RER was used as an index of fat and carbohydrate oxidation Heart ... for 60 The 60 period was estimated to give maximal blood levels of the ingredients [11, 13] Expired air was then collected and analyzed during the next 10 of the session Heartrateand blood pressure ... the measures Heart rate, blood pressure, and metabolic variables were maintained from baseline to the post-ingestion collection period regardless of treatment Three subjects (one male and two females)...
... cross-correlation coefficient between heartrateand blood pressure and whose frequency components are limited to the Mayer wave-related band, is capable of assessing VIMS On the other hand, an important feature ... trial, ECG and finger photo-plethysmogram signals were measured and recorded with a handmade Mayer-wave analyzer [16] The resolution of A/D converter and the sampling rate are 12 bit and kHz, respectively ... humans and check a new rehabilitation system prior to use For this purpose, it would be effective to estimate the autonomic nervous activity by analyzing physiological data such as heartrate and...
... Occupational Medicine and Toxicology 2006, 1:20 left hand right hand 500 R2 = 0,7665 Days 350 300 R2 = 0,3725 left hand right hand 200 2 R = 0,0253 14 left hand right hand 500 400 250 18 Cat.1 ... Workers' heartrate (HR), Pearson's correlation (r), Cohen's Kappa (k), percentage of the heartrate range (%HRR), energy expenditure (E), the rate of perceived exertion (RPE, scale 6–20), and work ... Cat.2 400 350 R2 = 0,2554 300 left hand right hand 1 2 Days Days Cat.3 450 R2 = 0,8456 400 R2 = 0,3689 350 300 left hand right hand 250 200 200 left hand right hand 500 R = 0,4356 250 R2 = 0,6171...
... Jorgen FH: Increased heartrateand reduced heart- ratevariability are associated with subclinical inflammation in middleaged and elderly subjects with no apparent heart disease Eur Heart J 2004, 25:363-370 ... 2003, 26:2052-2057 Lind L, Andren B: Heartrate recovery after exercise is related to the insulin resistance syndrome andheartratevariability in elderly men Am Heart J 2002, 144:666-672 Sung ... exercise test and HRR evaluation PCOS women underwent a symptom-limited CPX with Bruce treadmill protocol [6] Heartrate (HR) and blood pressure (BP) at baseline and peak exercise, heartrate minute...
... heartrate for the salvo-episode set is much lower than the heartrate for the periodic- and sporadic-episode sets, but for all three sets, and not just for the salvo-episode set, the heartrate ... exhibit similar changes of the heartrate before and during ischemia as the sporadic-episode set, but the heartrate in these intervals is much lower (the heartrate for the periodicepisode set is approximately ... morning interval, except for the periodic-episode set, when slightly higher heartrate is during the day interval For the periodic- and sporadic-episode set the heartrate during the night interval...
... Figure and fetal 1heart rate rhythms (36 – 40 weeks gestation) Hourly layout for 24-hour period frequencies of maternal Hourly layout for 24-hour period frequencies of maternal and fetal heartrate ... and fetal 2heart rate rhythms (36 – 40 weeks gestation) Hourly layout for 24-hour period frequencies of maternal Hourly layout for 24-hour period frequencies of maternal and fetal heartrate rhythms ... http://www.jcircadianrhythms.com/content/3/1/5 Karr et al [16] and Hellbrugge [13] investigated 24-hour heartrate rhythms of the mother and the fetus using single auscultations of maternal heartrateand pulse with 2-hour intervals...
... changes in heartrateand food intake in reindeer (Rangifer tarandus tarandus) Acta Physiol Scand 2000, 170, 145-151 Moen AN: Seasonal changes in heart rates, activity, metabolism, and forage ... standard median, and 10, 25, 75 and 90 percentiles The square plot presents the average and the outermost plots and 99 percentiles, and minimum and maximum values, respectively Acta vet scand ... observed between the generated pulse rateand the PVNV values, indicating a gradual adaptation to changes in generated pulse rate PVNV adjusts to changes in the pulse rate in about s but the lag...
... lactation period, all dogs were healthy They had no problems with lactation and took good care of their puppies The heartrate changed in relation to reproductive periodand time of day (Table and ... a.m.-12:00 p.m.) heart rates decreased with the course of gestation, they were higher than nighttime (12:00 p.m.-6:00 a.m.) rates for all periods (p
... variation of heartrate is affected by environment: a study of continuous electrocardiographic monitoring in members of a symphony orchestra Br Heart J 1990, 64:388-392 Hunsaker LA: Heartrateand rhythm ... REHEARSAL and CONCERT or CONCERT 1-CONCERT scenarios are also shown for each dependent variable (MHR and Max HR) at the top of the Figures All figures presented median, 25% and 75% quartiles, and 5% and ... comparisons, and comparing the Real Max HR with the MTHR in those subjects who underwent the effort test Results and Discussion Tables and show the values of the averages and (±) standard deviations...