Results 21 to 30 of about 3,116,070 (323)

The Origin, Epidemiology, and Phylodynamics of Human Immunodeficiency Virus Type 1 CRF47_BF

open access: yesFrontiers in Microbiology, 2022
CRF47_BF is a circulating recombinant form (CRF) of the human immunodeficiency virus type 1 (HIV-1), the etiological agent of AIDS. CRF47_BF represents one of 19 CRFx_BFs and has a geographic focus in Spain, where it was first identified in 2010.
Gracelyn Hill   +52 more
doaj   +1 more source

Risk‐of‐falling related outcomes improved in community‐dwelling older adults after a 6-week sideways walking intervention: a feasibility and pilot study

open access: yesBMC Geriatrics, 2021
Background Aging increases fall risk and alters gait mechanics and control. Our previous work has identified sideways walking as a potential training regimen to decrease fall risk by improving frontal plane control in older adults’ gait.
Andreas Skiadopoulos, Nick Stergiou
doaj   +1 more source

An Overview of Heart Rate Variability Metrics and Norms

open access: yesFrontiers in Public Health, 2017
Healthy biological systems exhibit complex patterns of variability that can be described by mathematical chaos. Heart rate variability (HRV) consists of changes in the time intervals between consecutive heartbeats called interbeat intervals (IBIs).
F. Shaffer, J. Ginsberg
semanticscholar   +1 more source

Heart rate variability: origins, methods, and interpretive caveats.

open access: yesPsychophysiology, 1997
Components of heart rate variability have attracted considerable attention in psychology and medicine and have become important dependent measures in psychophysiology and behavioral medicine.
G. Berntson   +10 more
semanticscholar   +1 more source

Diverse Large HIV-1 Non-subtype B Clusters Are Spreading Among Men Who Have Sex With Men in Spain

open access: yesFrontiers in Microbiology, 2019
In Western Europe, the HIV-1 epidemic among men who have sex with men (MSM) is dominated by subtype B. However, recently, other genetic forms have been reported to circulate in this population, as evidenced by their grouping in clusters predominantly ...
Elena Delgado   +91 more
doaj   +1 more source

Simulated methane emissions from Arctic ponds are highly sensitive to warming [PDF]

open access: yesBiogeosciences, 2023
The Arctic is warming at an above-average rate, and small, shallow waterbodies such as ponds are vulnerable to this warming due to their low thermal inertia compared to larger lakes.
Z. Rehder   +10 more
doaj   +1 more source

Photometric observations of NGC 281: Detection of 228 variable stars [PDF]

open access: yes, 2021
We identify 228 periodic variables in the region of young open cluster NGC 281 using time series photometry carried out from 1 m class ARIES telescopes, Nainital. The cluster membership of these identified variables is determined on the basis colour-magnitude, two colour diagrams and kinematic data.
arxiv   +1 more source

Multifractality in stride-to-stride variations reveals that walking involves more movement tuning and adjusting than running

open access: yesFrontiers in Network Physiology, 2023
Introduction: The seemingly periodic human gait exhibits stride-to-stride variations as it adapts to the changing task constraints. The optimal movement variability hypothesis (OMVH) states that healthy stride-to-stride variations exhibit “fractality”—a ...
Taylor J. Wilson   +4 more
doaj   +1 more source

Uneven terrain exacerbates the deficits of a passive prosthesis in the regulation of whole body angular momentum in individuals with a unilateral transtibial amputation

open access: yesJournal of NeuroEngineering and Rehabilitation, 2019
Background Uneven ground is a frequently encountered, yet little-studied challenge for individuals with amputation. The absence of control at the prosthetic ankle to facilitate correction for surface inconsistencies, and diminished sensory input from the
Jenny A. Kent   +2 more
doaj   +1 more source

Long-Term Trends of Global Wine Market

open access: yesAgriculture, 2023
The major factors of wine trade have been showing distinct patterns of temporal trends worldwide in past decades. Wine consumption, production, imports, and exports differ according to their location and classification to Old World and New World wine ...
Noa Ohana-Levi, Yishai Netzer
doaj   +1 more source

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