Results 31 to 40 of about 22,478,935 (303)

Reliability and Validity of Commercially Available Wearable Devices for Measuring Steps, Energy Expenditure, and Heart Rate: Systematic Review

open access: yesJMIR mHealth and uHealth, 2020
Background Consumer-wearable activity trackers are small electronic devices that record fitness and health-related measures. Objective The purpose of this systematic review was to examine the validity and reliability of commercial wearables in measuring ...
D. Fuller   +11 more
semanticscholar   +1 more source

Heart rate recovery after exercise: relations to heart rate variability and complexity

open access: yesBrazilian Journal of Medical and Biological Research, 2002
Physical exercise is associated with parasympathetic withdrawal and increased sympathetic activity resulting in heart rate increase. The rate of post-exercise cardiodeceleration is used as an index of cardiac vagal reactivation.
M. Javorka   +3 more
doaj   +1 more source

Investigating sources of inaccuracy in wearable optical heart rate sensors

open access: yesnpj Digital Medicine, 2020
As wearable technologies are being increasingly used for clinical research and healthcare, it is critical to understand their accuracy and determine how measurement errors may affect research conclusions and impact healthcare decision-making. Accuracy of
Brinnae Bent   +3 more
semanticscholar   +1 more source

Decreased heart rate variability and its association with increased mortality after acute myocardial infarction.

open access: yesAmerican Journal of Cardiology, 1987
A high degree of heart rate (HR) variability is found in compensated hearts with good function, whereas HR variability can be decreased with severe coronary artery disease, congestive heart failure, aging and diabetic neuropathy.
R. Kleiger   +3 more
semanticscholar   +1 more source

Analysis of Heart Rate Variability and Implication of Different Factors on Heart Rate Variability

open access: yesCurrent Cardiology Reviews, 2020
Background The heart is the central organ of the circulatory system, which maintains the flow of blood along with the transport of nutrients to different cells and tissues. A well-functioning cardiac state is a complicated mode of changeability.
Reena Tiwari   +4 more
semanticscholar   +1 more source

Identification of heart rate-associated loci and their effects on cardiac conduction and rhythm disorders [PDF]

open access: yes, 2011
Elevated resting heart rate is associated with greater risk of cardiovascular disease and mortality. In a 2-stage meta-analysis of genome-wide association studies in up to 181,171 individuals, we identified 14 new loci associated with heart rate and ...
Kooner, A.S.   +999 more
core   +2 more sources

Heart rate and heart rate variability in infants during olfactory stimulation

open access: yesAnnals of Human Biology, 2019
Background: Various plant odours have been shown to decrease heart rate and increase parasympathetic nervous activity. However, ‘innate’ autonomic responses without the influences of experience, assumptions and prejudices of odours remains unclear.
Yuko Tsunetsugu, Keita Ishibashi
doaj   +1 more source

Spectro-Temporal Electrocardiogram Analysis for Noise-Robust Heart Rate and Heart Rate Variability Measurement

open access: yesIEEE Journal of Translational Engineering in Health and Medicine, 2017
The last few years has seen a proliferation of wearable electrocardiogram (ECG) devices in the market with applications in fitness tracking, patient monitoring, athletic performance assessment, stress and fatigue detection, and biometrics, to name a few.
Diana P. Tobon   +2 more
doaj   +1 more source

Heart rate variability: are you using it properly? Standardisation checklist of procedures.

open access: yesBrazilian Journal of Physical Therapy, 2020
BACKGROUND Heart rate variability heart rate variability is used as an assessment method for cardiac autonomic modulation. Since the Task Force's publication on heart rate variability in 1996, the European Heart Rhythm Association Position Paper in 2015 ...
A. Catai   +5 more
semanticscholar   +1 more source

Behaviour, heart rate, and heart rate variability in pigs exposed to novelty

open access: yesRevista Brasileira de Zootecnia, 2016
In the present study, we investigated behavioural responses and determined parameters of heart rate variability (HRV) to elucidate a relative activation of autonomic nervous system (ANS) during baseline (10 min) and in response to potentially stressful ...
Manja Zupan   +2 more
doaj   +1 more source

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