Search results for "PEAK"

Muscle training for bone strength

2006

The main function of bone is to provide the mechanical integrity for locomotion and protection; accordingly, bone mass and architecture are adjusted to control the strains produced by mechanical load and muscular activity. Age-related patterns involve peak bone mass during growth, a plateau in adulthood, and bone loss during aging. The decline in bone mass and structural integrity results in increased risk of fractures, particularly in post-menopausal women. Athletes competing in strength and power events, such as weight-lifting and jumping, have superior bone mass and structure compared with their untrained counterparts in all age groups. Exercise seems to be most effective during rapid gr…

Physical Activity and Exercise in the Maintenance of the Adult Skeleton and the Prevention of Osteoporotic Fractures

2013

Abstract Physical activity and exercise are promoted as a nonpharmacological strategy to maintain or enhance musculoskeletal health in adults and prevent osteoporotic fracture. Less clear is the optimal mode, intensity, duration, and frequency of activity to achieve this objective. Although a substantial osteogenic response to appropriate mechanical loading is clearly evident in animal models and strongly supported from athlete cross-sectional and prospective studies, the results from exercise interventions in adults are less impressive with modest net benefits generally of 1% to 3% in bone mineral density (BMD) (g/cm2) at the clinically relevant hip and spine following prolonged weight-bea…

Bone mineral metabolism in the micropremie

2000

Environmental factors, nutritional supplies, hormonal status, diseases, and treatments appear to affect postnatal skeletal growth and mineralization in VLBW infants. Compared with their term counterparts, ELBW infants are at risk of postnatal growth deficiency and osteopenia at the time of hospital discharge. From recent data, DXA is becoming one of the reference techniques to evaluate mineral status, whole-body composition, and effects of dietary manipulations on weight gain composition and mineral accretion in preterm infants. Weight gain and length increases need to be evaluated carefully during the first weeks of life, in the intensive care unit and out of it, in the step down unit. Nut…

Peak Experiences with Electronic Dance Music

2019

This paper investigates the role of musical features in shaping peak-pleasurable experiences of electronic dance music (EDM). Typically, large structural and dynamic changes occur in an EDM track, which can be referred to as the break routine, consisting of breakdown, build-up, and drop. Twenty-four participants listened to four EDM excerpts featuring break routines, and one excerpt without a break routine. Measures were taken of skin conductance, self-reported affect, and embodied aspects of subjective experience, and incidence of pleasant bodily sensations. Participants reported intense affective experience with EDM despite being removed from the club context, and attributed this experien…

Half-width plots, a simple tool to predict peak shape, reveal column kinetics and characterise chromatographic columns in liquid chromatography: Stat…

2013

Peak profiles in chromatography are characterised by their height, position, width and asymmetry; the two latter depend on the values of the left and right peak half-widths. Simple correlations have been found between the peak half-widths and the retention times. The representation of such correlations has been called half-width plots. For isocratic elution, the plots are parabolic, although often, the parabolas can be approximated to straight-lines. The plots can be obtained with the half-widths/retention time data for a set of solutes experiencing the same kinetics, eluted with a mobile phase at fixed or varying composition. When the analysed solutes experience different resistance to mas…

PLZTx/65/35 ceramics (x = 2 and 4) under electromechanical and temperature loading

2010

The effect of uniaxial pressure (0–1000 bars) applied parallel to the ac electric field on dielectric properties of La-modified lead–zirconate–titanate, Pb(Ti,Zr)O3 (PZT), ceramics with Zr/Ti ratio of 65/35 was investigated. The experimental results revealed that applying uniaxial pressure leads to a reduction of the peak intensity of the electric permittivity (e), of the frequency dispersion as well as of the dielectric hysteresis. Moreover, with increasing pressure, the peak intensity of e becomes diffuse and shifts to a higher temperature. It was concluded that applying uniaxial pressure induces similar effects as increasing the Ti–ion concentration in PZT system. The obtained results we…

Speaker 4: Dasiel Borroto – Escuela, Sweden

2016

Publicación de artículos en inglés en revistas médicas en español: ¿Realmente no aumenta el número de citaciones en revistas indexadas?

2013

Sr. Editor: Hemos leido con interes la carta publicada por Vega y cols. (1) , que retoma el debate sobre publicar o no en ingles en revistas medicas editadas en paises de habla hispana, tomando como criterio el grado de citacion. Aunque la carta se esfuerza por mostrar resultados, hay que ser cauto y fundamentar solidamente las conclusiones en relacion con la metodologia aplicada y el alcance de los resultados obtenidos para evitar decisiones aventuradas o que podrian llevar a conductas inadecuadas, sea por parte de investigadores o editores de otras revistas. A pesar de que Vega y cols. senalan que no existen diferencias significativas segun el idioma de publicacion, los resultados present…

Baltic Journal of English Language, Literature and Culture, N. 3

2013

Analysis on the Time and Frequency Domains of the Acceleration in Front Crawl Stroke

2012

Analysis on the Time and Frequency Domains of the Acceleration in Front Crawl Stroke The swimming involves accelerations and decelerations in the swimmer's body. Thus, the main objective of this study is to make a temporal and frequency analysis of the acceleration in front crawl swimming, regarding the gender and the performance. The sample was composed by 31 male swimmers (15 of high-level and 16 of low-level) and 20 female swimmers (11 of high-level and 9 of low-level). The acceleration was registered from the third complete cycle during eight seconds in a 25 meters maximum velocity test. A position transducer (200Hz) was used to collect the data, and it was synchronized to an aquatic ca…