60 hz hum eliminator and heart rate detection using electrocardiography

... quietly 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 Heart rate and blood ... (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 ... caffeine from guarana, p-synephrine from C aurantium and a green tea polyphenolic extract on heart rate and blood pressure in mildly overweight human subjects Methods Twenty-three subjects volunteered...

Ngày tải lên: 25/10/2012, 11:10

... 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 ... rate and blood pressure [12-14] A previous study [14] showed that the physiological index, ρmax, defined as the maximum cross-correlation coefficient between heart rate and blood pressure and ... S: Evaluation of effect of visual stimulation on humans based on maximum cross-correlation coefficient between blood pressure and heart rate J Human Interface Japan 2002, 4(4):39-46 (in Japanese)...

Ngày tải lên: 19/06/2014, 10:20

... survivors [8] and had seven years of experience in using a polygraph to record heart rate variability and respiration (i) Autonomic and respiratory variables Heart rate variability was assessed using ... them and hence were not added The absence of change in the heart rate variability may be related to the yoga program and the yoga breathing techniques in particular The breath rate and heart ... participants were randomized as yoga and wait-list control groups, (ii) recording of heart rate variability as an objective measure of autonomic nervous system function, and (iii) using a yoga program...

Ngày tải lên: 11/08/2014, 16:22

... T, Akila F, Zeit T, Ziegler D Standardized tests of heart rate variability: normal ranges obtained from 309 healthy humans, and effects of age, gender, and heart rate Clin Auton Res 2001; 11(2): ... consumption, heart rate, and heart rate variability 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 heart rate dynamics: ... intrinsic heart rate, heart rate variability, and AV conduction in healthy humans Am J Physiol 1995; 268(4 Pt 2): H1441-52 79 Dalton KJ, Dawes GS, Patrick JE Diurnal, respiratory, and other rhythms...

Ngày tải lên: 15/09/2015, 17:10

... parameters between Nevrokard and F-EXTRACT using Bland-Altman method Differences between foetal HRV measured by the Nevrokard and FEXTRACT systems were analyzed using the Bland-Altman method Table ... F-EXTRACT, the results of the time- and frequencydomain analyses on the selected epoch were generated by using programming commands that included entering the start and end beat numbers on the MatLab ... frequency (VLF: 0.003-0.04 Hz) , low frequency (LF: 0.04-0.15 Hz) and high frequency (HF: 0.15-1.0 Hz) Other frequency-domain parameters compared were total power, LF and HF power in normalized...

Ngày tải lên: 15/09/2015, 17:11

... showed the baseline foetal heart rate (fHR) as 60- 70 bpm Clinical application of non-invasive foetal ECG 132 Figure 8-2: The foetal heart rate (fHR) and maternal heart rate (mHR) as displayed by ... different frequency bands as follows: very low frequency (VLF: 0.003-0.04 Hz) , low frequency (LF: 0.04-0.15 Hz) and high frequency (HF: 0.15-1.0 Hz) This is similar Heart rate variability of healthy ... gave an accurate measure of the true fHR The case history highlights the usefulness of non-invasive fECG in the determination of foetal heart rate and ECG and its advantage over CTG and scalp ECG...

Ngày tải lên: 15/09/2015, 17:11

... between 27 and 32 gestational weeks, when the success rates of P wave, QRS complex and T wave were reduced to 54.1%, 80.3% and 68.9%, respectively Detection rates were the best at the 37th week and ... strip, (b) foetal and maternal heart rate 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 ... analysis Using F-EXTRACT, foetal HRV was determined 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 heart...

Ngày tải lên: 15/09/2015, 17:11

... The QT interval varies with heart rate, lengthening at slower rates and shortening at faster rates Bazett’s formula is used to correct the QT interval for heart rate Using this formula, corrected ... between the PR interval and RR interval (i.e., a negative correlation between PR interval and foetal heart rate (fHR)), such that when the heart rate increases, both the PR and RR intervals shorten ... Foetal ST segment and T wave- Animal studies……………………… 26 Foetal ST segment and T wave- Human studies……………………… 31 Chapter Heart rate variability……………………………………… 35 Definition of heart rate variability……………………………………...

Ngày tải lên: 15/09/2015, 17:11

... MS/MS and database search Anal Chem 2002, 74:5383-5392 Sadygov RG, Yates JR 3rd: A hypergeometric probability model for protein identification and validation using tandem mass spectral data and ... highly curated proteins In this paper, we describe an exhaustive protein database generated from the 6-frame translation of the entire human genome to identify peptides isolated from human blood ... candidate high confidence ORFs The flowchart diagrams how high confidence ORFs were identified Data starts with raw spectra being analyzed by X!Tandem using our six-frame genome translation and...

Ngày tải lên: 14/08/2014, 16:21

... hesperidin and 600 mg naringin Group 4: Advantra Z® with 100 mg hesperidin and 600 mg naringin Group 5: Advantra Z® with 1,000 mg hesperidin and 600 mg naringin After remaining seated and resting ... different amounts of hesperidin and naringin on: (1) resting metabolism rate, (2) blood pressure, (3) resting heart- rate, and (4) self-reported mood/energy levels in healthy human subjects As expected, ... 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...

Ngày tải lên: 25/10/2012, 11:04

... between change in heart rate and autonomic nervous system activity was proposed by Akselrod et al [12], who suggested that the low-frequency component of the change in heart rate reflects the ... measured the heart rate 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 heart rate to infer ... screens (front, floor, and two sides) and stereo displays were projected on these screens at a 40 -Hz refresh rate Subjects observed the 3D display wearing polarized glasses, and the projection of...

Ngày tải lên: 19/06/2014, 10:20

... 0,3725 left hand right hand 200 2 R = 0,0253 14 left hand right hand 500 400 250 18 Cat.1 450 R2 = 0,0171 10 R = 0,6852 Days Frequency, Hz 14 Cat.2 400 350 R2 = 0,2554 300 left hand right hand 1 2 ... Workers' heart rate (HR), Pearson's correlation (r), Cohen's Kappa (k), percentage of the heart rate range (%HRR), energy expenditure (E), the rate of perceived exertion (RPE, scale 6–20), and work ... of energy costs of human physical activities Medicine and Science in Sports and Exercise 1993, 25(1):71-80 According to the heart rate monitoring data the road construction and maintenance workers...

Ngày tải lên: 20/06/2014, 00:20

... Jorgen FH: Increased heart rate and reduced heart- rate variability are associated with subclinical inflammation in middleaged and elderly subjects with no apparent heart disease Eur Heart J 2004, 25:363-370 ... 0% grade), and treadmill speed and grade at peak exercise were recorded as previously reported [14] HRR was calculated as the difference between heart rate at peak exercise and heart rate at first ... exercise test and HRR evaluation PCOS women underwent a symptom-limited CPX with Bruce treadmill protocol [6] Heart rate (HR) and blood pressure (BP) at baseline and peak exercise, heart rate minute...

Ngày tải lên: 20/06/2014, 07:20

... (LF) band (from 0.04 Hz to 0.15 Hz) and fraction of the total IHR power in the highfrequency (HF) band (from 0.15 Hz to 0.4 Hz) Using these time series, we computed mean and standard deviation of ... border frequencies of LF and HF bands (0.04–0.15 Hz and 0.15–0.4 Hz, resp.) correspond to periods of 25 seconds (0.04 Hz) , 6.7 seconds (0.15 Hz) , and 2.5 seconds (0.4 Hz) We chose the values of λ ... heart rate for the salvo-episode set is much lower than the heart rate for the periodic- and sporadic-episode sets, but for all three sets, and not just for the salvo-episode set, the heart rate...

Ngày tải lên: 22/06/2014, 20:20

... interpolated using cubic splines The instantaneous heart rate (IHR) is the inverse of the RR interval and shows the variability of heart rate Figure shows examples of IHR coinciding with the nonseizure and ... Frequency (Hz) (a) Smoothed pseudo-Wigner-ville (b) Spectogram 60 60 Horizontal lines 50 40 30 HF 10 600 200 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 Frequency (Hz) 1.5 −1 Time signal (c) Choi and ... frequency bands mentioned above; namely LF (0.03–0.07 Hz) , MF (0.07–0.15 Hz) , and HF (0.15–0.6 Hz) This results in three filtered signals (2) TF mapping: the three filtered signals are mapped using...

Ngày tải lên: 22/06/2014, 20:20

... investigated 24-hour heart rate rhythms of the mother and the fetus using single auscultations of maternal heart rate and pulse with 2-hour intervals throughout 24 hours N.N Konstantinova [10] and Hoppenbrowers ... analysis of heart rate changes in healthy pregnant women showed that function enhances from a.m (66.5 bpm) to 12 p.m (79.5 bpm), slightly reduces, and then Figure and fetal 2heart rate rhythms ... 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 heart rate...

Ngày tải lên: 10/08/2014, 09:20

... changes in heart rate and 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 rate and 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...

Ngày tải lên: 12/08/2014, 15:20

... problems with lactation and took good care of their puppies The heart rate changed in relation to reproductive period and time of day (Table and Fig 1) In all dogs the heart rate increased in the ... anoestral values (p

Ngày tải lên: 12/08/2014, 15:20

... of heart rate Hypertension 1993, 21: 236-247 Guzzetti S, Mezzetti S, Magatelli R, Porta A, De Angelis G, Rovelli G, Malliani A: Linear and non-linear 24 h heart rate variability in chronic heart ... 59 60 61 62 63 64 Heart dysfunction and heart rate variablility prognoses in sepsis Crit Care 2004, 8(Suppl 1):P75 Piepoli M, Garrard CS, Kontoyannis DA, Bernardi L: Autonomic control of the heart ... function and association with heart rate variability after a first acute myocardial infarction Heart 2001, 86:376-380 35 Kleiger RE, Stein PK, Bosner MS, Rottman JN: Time domain measurements of heart...

Ngày tải lên: 13/08/2014, 19:20