Results 61 to 70 of about 2,946,603 (185)

Longitudinal validity of spirometers--a challenge in longitudinal studies. [PDF]

, 2005
Pulmonary function testing (PFT) in longitudinal studies involves the repeated use of spirometers over long time periods. We assess the comparability of PFT results taken under biologic field conditions using thirteen certified devices of various ...
Ackermann-Liebrich, U., Brändli, O., Keidel, D., Keller, R., Kuna-Dibbert, B., Künzli, N., Leuenberger, P., Schindler, C., Schweinzer, K.M.   +8 more
core  

Lower Mitochondrial Energy Production of the Thigh Muscles in Patients With Low‐Normal Ankle‐Brachial Index

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2017
BackgroundLower muscle mitochondrial energy production may contribute to impaired walking endurance in patients with peripheral arterial disease. A borderline ankle‐brachial index (ABI) of 0.91 to 1.10 is associated with poorer walking endurance compared
Majd AlGhatrif, Ariel Zane, Matt Oberdier, Marco Canepa, Stephanie Studenski, Eleanor Simonsick, Richard G. Spencer, Kenneth Fishbein, David Reiter, Edward G. Lakatta, Mary M. McDermott, Luigi Ferrucci   +11 more
doaj   +1 more source

The factors associated with entry to formal care for the elderly in Scotland: A longitudinal analysis

International Journal of Population Data Science, 2018
Background Losing independence is a concern for older people, and sadly a reality for many. In Scotland there is an ageing population and unlike the rest of the UK, a policy to provide free personal and nursing care for those in need of assistance; this ...
D. Helen Corby, Dawn Everington, John Starr, Ian J. Deary, Chris Dibben   +4 more
doaj   +1 more source

Alzheimer's Disease Prediction Using Longitudinal and Heterogeneous Magnetic Resonance Imaging

, 2018
Recent evidence has shown that structural magnetic resonance imaging (MRI) is an effective tool for Alzheimer's disease (AD) prediction and diagnosis. While traditional MRI-based diagnosis uses images acquired at a single time point, a longitudinal study
Dai, Xiaowu, Initiative, Alzheimer's Disease Neuroimaging   +1 more
core  

Resonantly Damped Propagating Kink Waves in Longitudinally Stratified Solar Waveguides

, 2011
It has been shown that resonant absorption is a robust physical mechanism to explain the observed damping of magnetohydrodynamic (MHD) kink waves in the solar atmosphere due to naturally occurring plasma inhomogeneity in the direction transverse to the ...
Goossens, Marcel, Soler, Roberto, Terradas, Jaume, Verth, Gary   +3 more
core   +1 more source

HBT correlation in 158 A GeV Pb + Pb collisions [PDF]

, 2005
The large acceptance TPCs of the NA49 spectrometer allow for a systematic multidimensional study of two-particle correlations in different part of phase space.
Collaboration, NA49, Ganz, R.
core  

The mediation roles of intermuscular fat and inflammation in muscle mitochondrial associations with cognition and mobility

Journal of Cachexia, Sarcopenia and Muscle
Background Mitochondrial dysfunction may contribute to brain and muscle health through inflammation or fat infiltration in the muscle, both of which are associated with cognitive function and mobility. We aimed to examine the association between skeletal
Qu Tian, Philip R. Lee, Qi Yang, Anne Z. Moore, Bennett A. Landman, Susan M. Resnick, Luigi Ferrucci   +6 more
doaj   +1 more source

The Office for National Statistics Longitudinal Study

International Journal of Population Data Science, 2019
Background and Rationale The ONS Longitudinal Study (‘the LS’) covers England and Wales and includes individual data from the 1971 – 2011 decennial censuses and linked information on births, deaths and cancer registrations.
Alison Sizer, Oliver Duke-Williams
doaj   +1 more source

Higher skeletal muscle mitochondrial oxidative capacity is associated with preserved brain structure up to over a decade

Nature Communications
Impaired muscle mitochondrial oxidative capacity is associated with future cognitive impairment, and higher levels of PET and blood biomarkers of Alzheimer’s disease and neurodegeneration.
Qu Tian, Erin E. Greig, Christos Davatzikos, Bennett A. Landman, Susan M. Resnick, Luigi Ferrucci   +5 more
doaj   +1 more source

Examining the quality and population representativeness of linked survey and administrative data: guidance and illustration using linked 1958 National Child Development Study and Hospital Episode Statistics data

International Journal of Population Data Science
Introduction Recent years have seen an increase in linkages between survey and administrative data. It is important to evaluate the quality of such data linkages to discern the likely reliability of ensuing research.
Richard Silverwood, Nasir Rajah, Lisa Calderwood, Bianca De Stavola, Katie Harron, George Ploubidis   +5 more
doaj   +1 more source