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Abbreviation: LF/HF
Appearance Frequency: 216 time(s)
Long forms: 37

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Long Form No. Long Form Research Area Co-occurring Abbreviation PubMed/MEDLINE Info. (Year, Title)
low frequency/high frequency
(161 times)
Cardiology
(19 times)
HRV (96 times)
HF (30 times)
LF (20 times)
1994 Effects of midazolam and diazepam as premedication on heart rate variability in surgical patients.
LF to HF
(6 times)
Cardiology
(2 times)
HF (4 times)
LF (4 times)
HRV (3 times)
1994 Influence of arotinolol hydrochloride on heart rate spectrum in hypertensive subjects.
LF and HF
(4 times)
Neurology
(2 times)
HF (2 times)
HRV (2 times)
LF (2 times)
1999 Beneficial effects of long-term treatment with enalapril on cardiac function and heart rate variability in patients with old myocardial infarction.
low-frequency (LF) component to the HF component
(3 times)
Cardiology
(2 times)
HF (3 times)
LF (3 times)
AF (1 time)
1998 Comparison of 24-hour blood pressure, heart rate, and autonomic nerve activity in hypertensive patients treated with cilnidipine or nifedipine retard.
low-frequency (LF) to HF components
(3 times)
Medicine
(2 times)
HF (3 times)
LF (3 times)
BP (2 times)
2014 Consciously controlled breathing decreases the high-frequency component of heart rate variability by inhibiting cardiac parasympathetic nerve activity.
LF and HF bands
(2 times)
Biomedical Engineering
(2 times)
HRV (1 time)
PHD (1 time)
Pm (1 time)
1997 Heart rate variability spectral indices for haemodynamic classification of haemodialysis patients.
low frequency (LF) and the HF parameter
(2 times)
Medicine
(1 time)
HF (2 times)
HR (2 times)
LF (2 times)
2015 Associations between Heart Rate Variability Parameters and Housing- and Individual-Related Variables in Dairy Cows Using Canonical Correspondence Analysis.
low frequency (LF) to high frequency (HF) power
(2 times)
Complementary Therapies
(1 time)
HF (2 times)
HRV (2 times)
LF (2 times)
2013 Influence of dietary behavior on the circadian rhythm of the autonomic nervous system as assessed by heart rate variability.
low frequency component/HF
(2 times)
Vascular Diseases
(1 time)
HF (2 times)
2005 Acute effects of cigarette smoking on the heart rate variability of taxi drivers during work.
10  low frequency domain / high frequency domain
(2 times)
Neurology
(1 time)
BRS (1 time)
HAM-D (1 time)
HR (1 time)
2013 Patients with complex regional pain syndrome type 1: fractal dynamics of heart rate variability and baroreflex evaluations.
11  low frequency power, ln(LF), high frequency power, ln(HF); ln
(2 times)
Medicine
(2 times)
HF (2 times)
LF (2 times)
ABVN (1 time)
2013 Dysfunction of autonomic nervous system in childhood obesity: a cross-sectional study.
12  low-frequency (LF) power to HF power
(2 times)
Cardiology
(1 time)
HF (2 times)
HRV (2 times)
LF (2 times)
2001 Effect of essential hypertension on cardiac autonomic function in type 2 diabetic patients.
13  LF power to HF power
(1 time)
Medicine
(1 time)
HF (1 time)
HRV (1 time)
LF (1 time)
2014 Associations between diurnal 24-hour rhythm in ambulatory heart rate variability and the timing and amount of meals during the day shift in rotating shift workers.
14  LF to HF ratio
(1 time)
Cardiology
(1 time)
AMI (1 time)
ANS (1 time)
BRS (1 time)
2013 Effect of various forms of physical training on the autonomic nervous system activity in patients with acute myocardial infarction.
15  LF-to-high frequency power
(1 time)
Perinatology
(1 time)
HRV (1 time)
LF (1 time)
NRS (1 time)
2016 Postoperative Foot Massage for Patients after Caesarean Delivery.
16  LF/HF of heart rate variability: ln(LF), ln(HF) and ln
(1 time)
Cardiology
(1 time)
AMI (1 time)
HF (1 time)
LF (1 time)
2010 V-shaped trough in autonomic activity is a possible precursor of life-threatening cardiac events.
17  LF/high frequency (HF) ratio of power
(1 time)
Clinical Laboratory Techniques
(1 time)
ASA (1 time)
HF (1 time)
HRV (1 time)
2013 Evaluation of remifentanil anesthesia for off-pump coronary artery bypass grafting surgery using heart rate variability.
18  LF/high frequency variation
(1 time)
Vascular Diseases
(1 time)
HRV (1 time)
LF (1 time)
2008 Heart rate variability in white-coat hypertension.
19  ln(HF) and significantly decreased the values of ln
(1 time)
Complementary Therapies
(1 time)
--- 2014 Influence of forest therapy on cardiovascular relaxation in young adults.
20  Log(HF) was significantly lower and log
(1 time)
Cardiology
(1 time)
HC (1 time)
HF (1 time)
IDC (1 time)
1993 Autonomic nervous system activity in idiopathic dilated cardiomyopathy and in hypertrophic cardiomyopathy.
21  low and high frequency ratio of the power spectral density
(1 time)
Biomedical Engineering
(1 time)
ECG (1 time)
HRV (1 time)
pNN50 (1 time)
2014 Sternal pulse rate variability compared with heart rate variability on healthy subjects.
22  low frequency (LF) to HF
(1 time)
Rehabilitation
(1 time)
ECG (1 time)
FAMOS (1 time)
FSS (1 time)
2013 Fatigued patients with multiple sclerosis can be discriminated from healthy controls by the recordings of a newly developed measurement system (FAMOS): a pilot study.
23  low frequency (LF) to high frequency component (HF) of HRV
(1 time)
Physiology
(1 time)
HF (1 time)
HRV (1 time)
LF (1 time)
2009 Effects of low ambient temperature on heart rate variability during sleep in humans.
24  low frequency (LF), high frequency (HF) bands, and autonomic balance
(1 time)
Gynecology
(1 time)
HF (1 time)
LF (1 time)
VLF (1 time)
2001 Spectral analysis of fetal heart rate variability as a predictor of intrapartum fetal distress.
25  low frequency amplitude to HFA
(1 time)
Vascular Diseases
(1 time)
CLI (1 time)
HFA (1 time)
PAD (1 time)
2002 Effect of artificial carbon dioxide foot bathing on critical limb ischemia (Fontaine IV) in peripheral arterial disease patients.
26  low frequency power (LF%) and ratio of LF to HF
(1 time)
Physiology
(1 time)
HF (1 time)
HRV (1 time)
HT (1 time)
2013 Estrogen can modulate menopausal women's heart rate variability.
27  low frequency to high frequency components in HRV power spectrum
(1 time)
Biomedical Engineering
(1 time)
HRV (1 time)
2006 [Analysis of rat 24h heart rate variability based on telemetry technology].
28  low frequency versus high frequency signal
(1 time)
Medicine
(1 time)
ECG (1 time)
ESRD (1 time)
HRV (1 time)
2018 Short-term heart rate variability as a predictor of long-term survival in patients with chronic hemodialysis: A prospective cohort study.
29  low to high frequency spectral components of RR variability
(1 time)
Anesthesiology
(1 time)
P-R (1 time)
S-F (1 time)
S-R (1 time)
2015 Autonomic cardiovascular modulation with three different anesthetic strategies during neurosurgical procedures.
30  low-frequency (LF) and high-frequency (HF) power, and sympathovagal balance
(1 time)
Physical Fitness
(1 time)
BMs (1 time)
EE (1 time)
HF (1 time)
2015 Effects of Patrol Operation on Hydration Status and Autonomic Modulation of Heart Rate of Brazilian Peacekeepers in Haiti.
31  low-frequency (LF) and high-frequency components
(1 time)
Environmental Health
(1 time)
HF (1 time)
HRV (1 time)
LF (1 time)
2018 Physiological Effects of Visual Stimulation with Forest Imagery.
32  low-frequency (LF) components to high-frequency (HF) components
(1 time)
Cardiology
(1 time)
ECG (1 time)
HF (1 time)
HR (1 time)
2015 Relationship between J Waves and Vagal Activity in Patients Who Do Not Have Structural Heart Disease.
33  low-frequency component to the high-frequency component
(1 time)
Neurology
(1 time)
beta-AR (1 time)
HRV (1 time)
MBP (1 time)
2017 Acupuncture Attenuates Renal Sympathetic Activity and Blood Pressure via Beta-Adrenergic Receptors in Spontaneously Hypertensive Rats.
34  low-frequency over high-frequency spectral level
(1 time)
Biomedical Engineering
(1 time)
LVAD (1 time)
2015 Lower rotation speed stimulates sympathetic activation during continuous-flow left ventricular assist device treatment.
35  low-frequency power to HF
(1 time)
Neurology
(1 time)
ED (1 time)
HF (1 time)
HRV (1 time)
2009 Combined cardiac sympathetic excitation and vagal impairment in patients with non-organic erectile dysfunction.
36  lower while the ratio of low to high frequency
(1 time)
Veterinary Medicine
(1 time)
DM (1 time)
ECG (1 time)
HF (1 time)
2012 Heart rate variability and plasma norepinephrine concentration in diabetic dogs at rest.
37  lower-frequency (LF) to high-frequency (HF) power of HRV spectrum
(1 time)
Aerospace Medicine
(1 time)
AR (1 time)
HF (1 time)
HRV (1 time)
1999 [Analysis of heart rate variability during parallel swinging].