4,282 research outputs found
Composición corporal y mineral óseo en gimnastas femeninas pre- y peripuberales
La actividad física puede modificar la composición corporal y la mineralización
ósea. Se compararon ambas variables en gimnastas femeninas de competición
y controles apareados por edad y sexo que realizaban gimnasia recreativa (n =
12 en cada grupo; edades 9 a 14 años).
La composición corporal se evaluó por métodos antropométricos y
densitometría de rayos X (DXA). El contenido mineral y la densidad mineral
óseas se midieron por DXA en cuerpo entero y columna lumbar. La ingesta de
calcio se estimó por encuesta.Body composition and bone mineral in female pre- and peripuberal elite
gymnasts.
Intensive training may influence body composition and bone mineral. Highly
trained female gymnasts were compared with age-matched girls exercising for
leisure.Fil: Saraví, F.D..
Universidad Nacional de Cuyo. Facultad de Ciencias MédicasFil: Aquila Dumit, F. J..
Universidad Nacional de Cuyo. Facultad de Ciencias Médica
Distribution network planning for commercial and industrial areas: the realisation of flexible and Modular smart microgrids
Zelleromyces giennensis sp. Nov. (Russulales), a gasteroid fungus from the south of Spain.
[EN] Zellerornyces giennensis isproposed and described as a new species, inc1uding data on its taxonomy, ecology, morphology, anatomy and relationships with re1ated species.[ES] Se propone Zellerornyces giennensis como especie nueva para la ciencia, y se aportan datos sobre su taxonomía, ecología, morfología, anatomía, así como semejanzas y diferencias con especies próximas.[FR] Zellerornyces giennensis est proposé comme nouvelle espèce, avec l'apport de données sur la taxonomie, l'écologie, la morphologie, l'anatomie et les relations avec les taxa proches.Peer reviewe
Lattice Theories with Nonlinearly Realized Chiral Symmetry
We present the lattice formulation of effective Lagrangians in which chiral
symmetry is realized nonlinearly on the fermion fields. In this framework both
the Wilson term removing unphysical doubler fermions and the fermion mass term
do not break chiral symmetry. Our lattice formulation allows us to address
non-perturbative questions in effective theories of baryons interacting with
pions and in models involving constitutent quarks interacting with pions and
gluons. With the presented methods, a system containing a non-zero density of
static baryons interacting with pions can be studied on the lattice without
encountering a complex action problem. This might lead to new insights into the
phase diagram of strongly interacting matter at non-zero chemical potential.Comment: 3 pages, Lattice2003(chiral
Study of the (6-Li,d) Reaction at E(Li)=90 MeV
This work was supported by National Science Foundation Grants PHY 76-84033A01, PHY 78-22774, and Indiana Universit
Efficiency in sequential testing: Comparing the sequential probability ratio test and the sequential Bayes factor test
In a sequential hypothesis test, the analyst checks at multiple steps during data collection whether sufficient evidence has accrued to make a decision about the tested hypotheses. As soon as sufficient information has been obtained, data collection is terminated. Here, we compare two sequential hypothesis testing procedures that have recently been proposed for use in psychological research: Sequential Probability Ratio Test (SPRT; Psychological Methods, 25(2), 206–226, 2020) and the Sequential Bayes Factor Test (SBFT; Psychological Methods, 22(2), 322–339, 2017). We show that although the two methods have different philosophical roots, they share many similarities and can even be mathematically regarded as two instances of an overarching hypothesis testing framework. We demonstrate that the two methods use the same mechanisms for evidence monitoring and error control, and that differences in efficiency between the methods depend on the exact specification of the statistical models involved, as well as on the population truth. Our simulations indicate that when deciding on a sequential design within a unified sequential testing framework, researchers need to balance the needs of test efficiency, robustness against model misspecification, and appropriate uncertainty quantification. We provide guidance for navigating these design decisions based on individual preferences and simulation-based design analyses
Long term changes in health-related quality of life for people with heart failure:the ECHOES study
Aims: Heart failure (HF) impairs all aspects of health-related quality of life (HRQoL), but little is known about the effect of developing HF on HRQoL over time. We aimed to report changes in HRQoL over a 13-year period. Methods and results: HRQoL was measured in the Echocardiographic Heart of England Screening (ECHOES) study and the ECHOES-X follow-up study (N = 1618) using the SF-36 questionnaire (Version 1). Mixed modelling compared changes in HRQoL across diagnostic groups, adjusting for potential predictors and design variables. Patients who had developed HF with reduced ejection fraction (HFrEF) or HF with preserved ejection fraction (HFpEF) at rescreening had significantly greater reduction in physical functioning (PF) and role physical (RP) scores compared with those without HF; adjusted mean difference in PF: HFrEF −16.1, [95% confidence interval (CI) −22.2 to −10.1]; HFpEF −14.6, (95% CI −21.2 to −8.1); in RP: HFrEF −20.7, (95% CI −31.8 to −9.7); HFpEF −19.3, (95% CI −31.0 to −7.6). Changes in HRQoL of those with a HF diagnosis at baseline and rescreen, with exception of role emotion, were similar to those without HF but started from a much lower baseline score. Conclusions: People with a new diagnosis of HF at rescreening had a significant reduction in HRQoL. Conversely, for those with HF detected on initial screening, little change was observed in HRQoL scores on rescreening. Further research is required to understand the development of HF over time and to test interventions designed to prevent decline in HRQoL, potentially through earlier diagnosis and treatment optimization.</p
Efficiency in sequential testing: Comparing the sequential probability ratio test and the sequential Bayes factor test
- …