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We present a total time series of high signal-to-noise, high-resolution spectra of the SiIII $\lambda 4552.6$, $\lambda 4567.8$and $\lambda 4574.8$Ålines of the fast-rotating, spectroscopic binary and βCephei star κScorpii. Among this data set is a sample of 422 spectra of intensive monitoring during eight subsequent nights in July 1997. We find variability of the line profiles on two time-scales: a variation of several months as a result of the orbital motion and rapid variations of a few hours, which are explained in terms of non-radial pulsation modes. From the total dataset, covering a time span of 9 years, we derive for the first time the orbital parameters of κScorpii and find an orbital period of 195 days. The complex patterns on the grayscale representations of the residual SiIII $\lambda 4552.6$Åprofiles with respect to the average profile point towards more than one (non-axisymmetric) pulsation mode. A frequency analysis of the three normalised velocity moments confirms the main period of 4.80 hours and the second period of 4.93 hours, which were previously derived from photometric data. We attempt an identification of the pulsation modes by means of the moment method and line-profile fitting and find that κScorpii pulsates in a main prograde sectoral mode of degree 1 or 2 and in an additional tesseral mode for which $l = 5$, $m = 1$are the most likely wavenumbers. In the variations of the line profiles we find indications for the presence of additional pulsation modes.

This document provides information about scapular dyskinesia, a condition that affects the resting position and movement of the scapula, leading to impaired shoulder function. It is commonly observed in athletes and sedentary individuals and is associated with issues such as increased glenohumeral angle and reduced rotator cuff strength. The text emphasizes the importance of core and scapular stability in athletes and recommends exercises targeting both the core and scapular muscles, such as the plank exercise. However, it also mentions the need for further research on the activation of the serratus anterior muscle during plank exercises in athletes with scapular dyskinesia. Additionally, the document briefly mentions a research study that aims to investigate shoulder and scapular dyskinesis in female athletes aged 13-18 years, but does not provide specific details about the study's location or collaborators. [Extracted from the article]

Stabilization exercises have been a focus and mainstay of many therapeutic and performance training programs in the past decade. Whether the focus is core stabilization for the spine or scapular stabilization, clinicians and trainers alike have endorsed these programs, largely on the basis of conceptual theory and anecdotal experience. The notion that an unstable scapula is related to shoulder dysfunction and pathology is well accepted, but is it accurate? The aim of this perspective article is to challenge the concept of scapular stabilization through the application of biomechanical and motor control constructs. The objectives are to critically examine current beliefs about scapular stabilization, to discuss definitions of stabilization and stability in the context of the scapulothoracic region, and to evaluate key evidence regarding scapular stabilization and scapular dyskinesia. Several new approaches that may affect the understanding of normal and atypical scapula motion are explored. Finally, a historical analogy is presented and future research and clinical directions are suggested. The aims are to lead readers to the essential concepts implied on scapular stabilization, to increase the critical thought process in rehabilitation practice, and to suggest some open topics to be explored in future research., The notion that an unstable scapula is related to shoulder dysfunction and pathology is well accepted. (1,2) The prevailing theory asserts that for proper function of the glenohumeral joint, the [...]

2019 MAY 25 (NewsRx) -- By a News Reporter-Staff News Editor at Obesity, Fitness & Wellness Week -- Fresh data on Oncology - Colon Cancer are presented in a new [...]