1,675 research outputs found

    A Study of the Relationship Between Personality Type and Emotional Response to Athletic Injury

    Get PDF
    This investigation was designed to examine emotional response to athletic injury using personality constructs within reversal theory. Twenty-five (male = 19, female = 6) collegiate athletes, ranging in age from 18 to 22 years (mean = 19.95, SD = 1.11) who sustained a minimal criteria injury during a six-week data collection period participated in this study. Each athlete\u27s total mood disturbance (TMD) was measured pre-injury and post-injury using the Profile of Mood States (POMS). Athlete\u27s personality orientation was measured using the Paratelic Dominance Scale (PDS). A dependent t-test indicated a significant increase in TMD scores following injury (p \u3c 0.05), thus indicating overall mood disturbance in injured athletes. An independent t-test comparing paratelic and telic dominant athletes on TMD difference scores revealed non-significant results (p = 0.40). Methodological and theoretical reasons for this are examined and implications for further study of reversal theory and athletic injury are discussed

    Comparative evaluation of Stevia and Xylitol chewing gum on salivary Streptococcus mutans count ? A pilot study

    Get PDF
    Stevia is a natural sweetener which is used as sugar substitute. It has been suggested that stevia may be anticariogenic. However, there is limited research in this regard. Hence, the present study was designed to assess reduction in S. mutans in stevia and xylitol chewing gums. The aim of this study is to evaluate the effectiveness of stevia and xylitol chewing gums on salivary Streptococcus mutans count. A randomized triple blinded clinical study with a crossover design included twenty healthy children aged 8-13 years with decayed, missing, and filled teeth (dmft)/DMFT index score ? 3. Before the test, unstimulated saliva was collected. Children divided into Group I and II were given Stevia and Xylitol chewing gums respectively. Saliva samples were then collected at 15 min (just after spitting) and after 1 h. The amount of S. mutans in saliva was evaluated using a selective media (TYCSB). The data were subjected to statistical analysis using statistical software IBM SPSS statistics 20.0 (IBM Corporation, Armonk, NY, USA) Reduction in S. mutans was seen from baseline to 1 hour in both groups in trial and crossover design though intergroup comparison was not statistically significant. There was reduction seen from baseline to 15 minutes and 15 minutes to 1 hour in xylitol and stevia group both in trial and crossover design which was statistically significant. Stevia containing chewing gum is equally effective to Xylitol chewing gum in reducing salivary S. mutans counts

    Refugees and the City: UN-Habitat’s New Urban Agenda

    Get PDF
    Special protection for refugees and displaced persons should be part of countries’ housing policies

    Reliability of single-leg balance and landing tests in rugby union; prospect of using postural control to monitor fatigue

    Full text link
    © Journal of Sports Science and Medicine. The present study examined the inter-trial (within test) and inter-test (between test) reliability of single-leg balance and single-leg landing measures performed on a force plate in professional rugby union players using commercially available software (SpartaMARS, Menlo Park, USA). Twenty-four players undertook test – re-test measures on two occasions (7 days apart) on the first training day of two respective pre-season weeks following 48h rest and similar weekly training loads. Two 20s single-leg balance trials were performed on a force plate with eyes closed. Three single-leg landing trials were performed by jumping off two feet and landing on one foot in the middle of a force plate 1m from the starting position. Single-leg balance results demonstrated acceptable inter-trial reliability (ICC = 0.60-0.81, CV = 11-13%) for sway velocity, anterior-posterior sway velocity, and mediolateral sway velocity variables. Acceptable inter-test reliability (ICC = 0.61-0.89, CV = 7-13%) was evident for all variables except mediolateral sway velocity on the dominant leg (ICC = 0.41, CV = 15%). Single-leg landing results only demonstrated acceptable inter-trial reliability for force based measures of relative peak landing force and impulse (ICC = 0.54-0.72, CV = 9-15%). Inter-test results indicate improved reliability through the averaging of three trials with force based measures again demonstrating acceptable reliability (ICC = 0.58-0.71, CV = 7-14%). Of the variables investigated here, total sway velocity and relative landing impulse are the most reliable measures of single-leg balance and landing performance, respectively. These measures should be considered for monitoring potential changes in postural control in professional rugby union

    The influence of training load on postural control and countermovement jump responses in rugby union

    Full text link
    © 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group. Purpose: This study investigated responses of single-leg balance and landing and countermovement jump (CMJ) following rugby union training and the specific components of training load associated with test decrement. Methods: Twenty-seven professional rugby union players performed CMJ, single-leg balance and landing tests on a 1000 Hz force plate at the beginning and end of training days. Training load was described by session RPE, Banister’s TRIMP, GPS total distance, high-speed running distance (>5.5 m s−1), relative speed and body load. Results: CMJ eccentric rate of force development (EccRFD) demonstrated moderate impairment post-training (ES ± 90%CL = −0.79 ± 0.29, MBI = almost certainly). CMJ height (−0.21 ± 0.16, possible), concentric impulse (ConIMP) (−0.35 ± 0.17, likely) and single-leg balance sway velocity on the non-dominant leg (0.30 ± 0.26, possible) were also impaired. Regression analyses identified the strongest relationship between sRPE and impaired ConIMP (r = −0.68 ± 21, β = −0.68) whilst other load measures explained 27–50% of the variance in balance and CMJ changes. Conclusions: CMJ variables representing altered movement strategy (EccRFD and IMP) may be useful for assessing acute neuromuscular fatigue in rugby union, though single-leg balance sway velocity may be an alternative when maximal tests are impractical

    Proteins as Coating Materials on Bioactive Glass-based Composite Foams

    Get PDF
    Nowadays the replacement or repair of tissue damaged by disease or trauma, especially bone tissue, is one of the biggest challenges in the medical field and is faced by thousands of surgeons every day. Autografts are the current gold standard but they are strongly limited which turns the spotlight to the application of alloplastic grafts which consist of non-biological engineered materials like metals, ceramics or polymers [1]. Due to the high bioactivity, osteoconductivity and angiogenic effects, bioactive glasses, e.g. the 45S5 Bioglass® composition, are attracting increasingly attention as bone substitute materials. However, the brittle character of bioactive glass limits its application area in bone tissue engineering, particularly in load-bearing parts. To improve the mechanical properties of bioactive glass-based foams (scaffolds) fabricated by the foam replica technique [2], polymer coatings are applied to fill and bridge microcracks present on the surface of the scaffolds in order to increase the fracture strength [3]. Zein, a plant-derived protein from corn, offers biodegradability and biocompatibility and is widely used as coating material in the pharmaceutical and food industry [4]. 45S5 bioactive glass-based scaffolds, dip-coated in a solution with 8 wt.% zein in ethanol, showed enhanced mechanical performance after the coating procedure. Compressive strength increased from 0.04 ± 0.02 MPa for uncoated scaffolds to 0.21 ± 0.02 MPa for zein-coated scaffolds. In contrast, an animal-derived protein was also used as coating material to compare the potential of natural-derived proteins of different origins for further investigations in the field of bone tissue engineering. Collagen is the most abundant protein in mammals and has the ability to form a strong network [5]. By surface functionalization collagen type I can be covalently bonded to the bioactive glass surface. Additional chemical crosslinking with NHS and EDC further strengthen the collagen coating. Samples coated with collagen showed as well enhanced mechanical performance and exhibited values of 0.18 ± 0.02 MPa for compressive strength. For the evaluation of bioactivity, uncoated and polymer-coated scaffolds (zein and collagen) were immersed in simulated body fluid (SBF). Results showed no influence of the coating material on the bioactive behavior of the 45S5 bioactive glass-based foam. Therefore, both natural-derived proteins have the potential to be used as coating materials for tissue engineering appliations and are promising candidates for further comparative studies in this field. [1] García-Gareta E, Coathup MJ, Blunn GW. Osteoinduction of bone grafting materials for bone repair and regeneration. Bone 2015;81:112–21. [2] Chen QZ, Thompson ID, Boccaccini AR. 45S5 Bioglass®-derived glass-ceramic scaffolds for bone tissue engineering. Biomaterials 2006;27:2414–25. [3] Philippart A, Boccaccini AR, Fleck C, Schubert DW, Roether JA. Toughening and functionalization of bioactive ceramic and glass bone scaffolds by biopolymer coatings and infiltration: a review of the last 5 years. Expert Rev Med Devices 2015;12:93–111. [4] Shukla R, Cheryan M. Zein: the industrial protein from corn. Ind Crops Prod 2001;13:171–92. [5] Parenteau-Bareil R, Gauvin R, Berthod F. Collagen-Based Biomaterials for Tissue Engineering Applications. Materials (Basel) 2010;3:1863–87

    Wacana Gerakan Body Positivity Sebagai Respons Dari Perilaku Body Shaming di Instagram

    Get PDF
    Body shaming merupakan fenomena dalam menjustifikasi tubuh atau fisik seseorang, yang dalam hal ini dilakukan melalui Instagram. Akun @farrenbenedictus_, merupakan seorang penyintas body shaming dan kini sudah menjadi penggerak untuk gerakan body positivity di media sosial Instagram. Penelitian ini menggunakan analisis wacana kritis model Teun A. van Dijk dalam analisisnya, yang menggunakan analisis tekstual, kognisi sosial, dan konteks sosial dari wacana yang dituliskan oleh akun @farrenbenedictus_. Dalam postingannya, ditemukan 4 tujuan wacana body positivity yang dilakukan oleh @farrenbenedictus_ guna merespons body shaming di media sosial Instagramnya, yaitu; (1) body acceptance and love; (2) body appreciation; (3) care adaptive investment in body dan; (4) protective filtering information. Dari keempat wacana ini, Farren menekankan pentingnya self-love dan self-acceptance dalam mempraktikkan body positivity, sehigga dengan begitu, hal-hal yang di luar kendali individu seperti body shaming dapat diatasi dengan mudah. Farren juga memahami bahwa mereka yang menuliskan ujaran-ujaran tidak baik kepada individu tertentu adalah karena mereka tidak mengenali orang tersebut, sehingga dengan mudahnya menuliskan hal buruk terhadap orang lain. Semakin tinggi anonimitas, akan semakin mudah untuk melakukan body shaming terhadap orang lain.Kata kunci: body positivity, body shaming, influencer, instagra

    In vivo investigation of the tissue response to commercial Teflon insulin infusion sets in large swine for 14 days: the effect of angle of insertion on tissue histology and insulin spread within the subcutaneous tissue.

    Get PDF
    Objective: This study investigated the effects of the inflammatory tissue response (ITR) to an insulin infusion set (IIS) on insulin bolus spread over wear time, as well as the effect of cannula insertion angle on the ITR, bolus shape, and pump tubing pressure. Research design and methods: Angled or straight IISs were inserted every other day for 14 days into the subcutaneous tissue of 11 swine and insulin was delivered continuously. Prior to euthanasia, a 70 µL bolus of insulin/X-ray contrast agent was infused while recording a pressure profile (peak tubing pressure, pmax; area under the pressure curve, AUC), followed by the excision of the tissue-catheter specimen. Bolus surface area (SA) and volume (V) were assessed via micro-CT. Tissue was stained to analyze total area of inflammation (TAI) and inflammatory layer thickness (ILT) surrounding the cannula. Results: A bolus delivered through an angled IIS had a larger mean SA than a bolus delivered through a straight cannula (314.0±84.2 mm2 vs 229.0±99.7 mm2, p\u3c0.001) and a larger volume (198.7±66.9 mm3 vs 145.0±65.9 mm3, p=0.001). Both decreased significantly over wear time, independent of angle. There was a significant difference in TAI (angled, 9.1±4.0 mm2 vs straight, 14.3±8.6 mm2, p\u3c0.001) and ILT (angled, 0.7±0.4 vs straight, 1.2±0.7 mm, p\u3c0.001). pmax (p=0.005) and AUC (p=0.014) were lower using angled IIS. As ILT increased, pmax increased, while SA and V decreased. Conclusions: The progression of the ITR directly affected bolus shape and tubing pressure. Although straight insertion is clinically preferred, our data suggest that an angled IIS elicits lower grades of ITR and delivers a bolus with lower tubing pressure and greater SA and V. The subcutaneous environment plays a crucial role in IIS longevity, and the insertion angle needs to be considered in future IIS designs and clinical trials

    The first confirmation of V-type asteroids among the Mars crosser population

    Get PDF
    The Mars crossing region constitutes a path to deliver asteroids from the Inner Main Belt to the Earth crossing space. While both the Inner Main Belt and the population of Earth crossing asteroids contains a significant fraction of asteroids belonging to the V taxonomic class, only two of such V-type asteroids has been detected in the Mars crossing region up to now. In this work, we searched for asteroids belonging to the V class among the population of Mars crossing asteroids, in order to support alternative paths to the delivery of this bodies into the Earth crossing region. We selected 18 candidate V-type asteroids in the Mars crossing region using observations contained in the Sloan Digital Sky Survey Moving Objects Catalog. Then, we observed 4 of these candidates to take their visible spectra using the Southern Astrophysical Research Telescope (SOAR). We also performed the numerical simulation of the orbital evolution of the observed asteroids. We confirmed that 3 of the observed asteroids belong to the V class, and one of these may follow a path that drives it to an Earth collision in some tens of million years
    corecore