RELATIONSHIP BETWEEN ISOKINETIC STRENGTH, VERTICAL JUMP, SPRINT SPEED, AGILITY AND YO-YO INTERMITTENT RECOVERY TEST PERFORMANCE IN SOCCER PLAYERS

The current study investigated the relationship between isokinetic knee strength, jump performance, agility, linear and repeated sprinting capacity and Yo-Yo IR1 test performance and the fatigue indices of some of these variables in semi-professional soccer players. Twenty semi-professional soccer players participated in this study, performing 6 tests: bilateral concentric isokinetic strength tests of the knee extensors and flexors (60◦.s-1 and 300◦.s-1), jump tests (countermovement, squat and repeated jumping), linear sprints (10 and 30 m), agility (Illinois test), Bangsbo repeated sprints (7 x 34.2 m), and Yo-Yo IR1 tests. While no isokinetic variables were significantly correlated with field test results, some jump test results correlated with AgiWB, 10- and 30-m sprint times, RSTMEAN and FIRS. Furthermore, the knee isokinetic strength (60◦.s-1 and 300◦.s-1) indices and jump capacities demonstrated moderate to strong relationships with each other. In addition, AgiWB correlated with the 10-m sprint times and RSTMEAN, 30-m linear sprint times correlated with 10-m sprint times and AgiWB, and FIRS and RSTMEAN correlated with the Yo-Yo IR1 test results. The results suggest that power output during CMJ and RJ tests and not isokinetic knee strength are informative in determining field conditioning parameters for semi-professional soccer players.  Article visualizations

EFFECTS OF 8-WEEKS WHOLE BODY VIBRATION TRAINING ON SOME MARKERS 06 TENNIS PERFORMANCE

The aim of the current study was to investigate the effects of Whole Body Vibration (WBV) training on some tennis performance parameters like International Tennis Numbr (ITN) scores, serve speed, reactive agility (with and without racket), 5171, 10m, 20m sprint and isokinetic strength values. 19 tennis players (training group: 9, control group: 10) participated in the research as volunteers. All the selectd parameters were measured before and after the training protocol. While control group was following regular tennis training, intervention group practiced WBV training for eight weeks (3 times a week, 1 level up for every fortnight, 15-20 mins per section). Consequently, it has been revealed that WBV training made an increase in selected performance parameters of athletes

Intestinal helminths of the white stork (Ciconia ciconia Linnaeus 1758) from an inter-route site in Turkey

In Turkey, a study was conducted during the years 2009–2015 to detect the gastrointestinal helminth species of 18 white storks (Ciconia ciconia Linnaeus, 1758 (Aves: Ciconiiformes) sampled from aquatic or swamp areas of Bursa Province, one of the inter-route sites where storks intensely stay. The results of postmortem examination revealed that 17 (94.44%) white storks harboured one or more helminth species. Eight species of helminths were detected at the following prevalence rates: Dictymetra discoidea (38.88%), Chaunocephalus ferox (37.50%), Schistocephalus solidus (27.77%), Stephanoprora (Monilifer) spinulosa (18.75%), Echinoparyphium sp. (12.50%), Tylodelphys excavata (6.25%), T. clavata (6.25%), and Syncuaria ciconiae (6.25%). This study is the first report on the presence of all the above species except T. excavata from white storks in Turkey. Stephanoprora (M.) spinulosa was found in Ciconiiform birds for the first time in this study

Multiparametric MRI of rectal cancer—repeatability of quantitative data: a feasibility study

PURPOSEIn this study, we aimed to analyze the repeatability of quantitative multiparametric rectal magnetic resonance imaging (MRI) parameters with different measurement techniques.METHODSAll examinations were performed with 3 T MRI system. In addition to routine sequences for rectal cancer imaging protocol, small field-of-view diffusion-weighted imaging and perfusion sequences were acquired in each patient. Apparent diffusion coefficient (ADC) was used for diffusion analysis and ktrans was used for perfusion analysis. Three different methods were used in measurement of these parameters; measurements were performed twice by one radiologist for intraobserver and separately by three radiologists for interobserver variability analysis. ADC was measured by the lowest value, the value at maximum wall thickness, and freehand techniques. Ktrans was measured at the slice with maximum wall thickness, by freehand drawn region of interest (ROI), and at the dark red spot with maximum value.RESULTSA total of 30 patients with biopsy-proven rectal adenocarcinoma were included in the study. The mean values of the parameters measured by the first radiologist on the first and second measurements were as follows: mean lowest ADC, 721.31±147.18 mm2/s and 718.96±135.71 mm2/s; mean ADC value on the slice with maximum wall thickness, 829.90±144.24 mm2/s and 829.48±149.23 mm2/s; mean ADC value measured by freehand ROI on the slice with maximum wall thickness, 846.56±136.31 mm2/s and 848.23±144.15 mm2/s; mean ktrans value on the slice with maximum wall thickness, 0.219±0.080 and 0.214±0.074; mean ktrans by freehand ROI technique (including as much tumoral tissue as possible), 0.208±0.074 and 0.207±0.069; mean ktrans measured from the dark red foci, 0.308±0.109 and 0.311±0.105. Intraobserver agreement was very good among diffusion and perfusion parameters obtained with all three measurement techniques. Interobserver agreement was very good, except for one of the measurement techniques. As far as interobserver variability is considered, only ADC value measured on the slice with maximum wall thickness differed significantly.ConclusionMultiparametric MRI of rectum, using ADC as the diffusion and ktrans as the perfusion parameter is a repeatable technique. This technique may potentially be used in prediction and evaluation of neoadjuvant treatment response. New studies with larger patient groups are needed to validate the role of multiparametric MRI

Impact of opioid-free analgesia on pain severity and patient satisfaction after discharge from surgery: multispecialty, prospective cohort study in 25 countries

Background: Balancing opioid stewardship and the need for adequate analgesia following discharge after surgery is challenging. This study aimed to compare the outcomes for patients discharged with opioid versus opioid-free analgesia after common surgical procedures.Methods: This international, multicentre, prospective cohort study collected data from patients undergoing common acute and elective general surgical, urological, gynaecological, and orthopaedic procedures. The primary outcomes were patient-reported time in severe pain measured on a numerical analogue scale from 0 to 100% and patient-reported satisfaction with pain relief during the first week following discharge. Data were collected by in-hospital chart review and patient telephone interview 1 week after discharge.Results: The study recruited 4273 patients from 144 centres in 25 countries; 1311 patients (30.7%) were prescribed opioid analgesia at discharge. Patients reported being in severe pain for 10 (i.q.r. 1-30)% of the first week after discharge and rated satisfaction with analgesia as 90 (i.q.r. 80-100) of 100. After adjustment for confounders, opioid analgesia on discharge was independently associated with increased pain severity (risk ratio 1.52, 95% c.i. 1.31 to 1.76; P < 0.001) and re-presentation to healthcare providers owing to side-effects of medication (OR 2.38, 95% c.i. 1.36 to 4.17; P = 0.004), but not with satisfaction with analgesia (beta coefficient 0.92, 95% c.i. -1.52 to 3.36; P = 0.468) compared with opioid-free analgesia. Although opioid prescribing varied greatly between high-income and low- and middle-income countries, patient-reported outcomes did not.Conclusion: Opioid analgesia prescription on surgical discharge is associated with a higher risk of re-presentation owing to side-effects of medication and increased patient-reported pain, but not with changes in patient-reported satisfaction. Opioid-free discharge analgesia should be adopted routinely

Omecamtiv mecarbil in chronic heart failure with reduced ejection fraction, GALACTIC‐HF: baseline characteristics and comparison with contemporary clinical trials

Aims: The safety and efficacy of the novel selective cardiac myosin activator, omecamtiv mecarbil, in patients with heart failure with reduced ejection fraction (HFrEF) is tested in the Global Approach to Lowering Adverse Cardiac outcomes Through Improving Contractility in Heart Failure (GALACTIC‐HF) trial. Here we describe the baseline characteristics of participants in GALACTIC‐HF and how these compare with other contemporary trials. Methods and Results: Adults with established HFrEF, New York Heart Association functional class (NYHA) ≥ II, EF ≤35%, elevated natriuretic peptides and either current hospitalization for HF or history of hospitalization/ emergency department visit for HF within a year were randomized to either placebo or omecamtiv mecarbil (pharmacokinetic‐guided dosing: 25, 37.5 or 50 mg bid). 8256 patients [male (79%), non‐white (22%), mean age 65 years] were enrolled with a mean EF 27%, ischemic etiology in 54%, NYHA II 53% and III/IV 47%, and median NT‐proBNP 1971 pg/mL. HF therapies at baseline were among the most effectively employed in contemporary HF trials. GALACTIC‐HF randomized patients representative of recent HF registries and trials with substantial numbers of patients also having characteristics understudied in previous trials including more from North America (n = 1386), enrolled as inpatients (n = 2084), systolic blood pressure < 100 mmHg (n = 1127), estimated glomerular filtration rate < 30 mL/min/1.73 m2 (n = 528), and treated with sacubitril‐valsartan at baseline (n = 1594). Conclusions: GALACTIC‐HF enrolled a well‐treated, high‐risk population from both inpatient and outpatient settings, which will provide a definitive evaluation of the efficacy and safety of this novel therapy, as well as informing its potential future implementation

Türkiye için turizm talep denkleminin tahmini : ekonomik, sosyal ve siyasal etkenler

Turizm sektörü, günümüzde Türkiye dahil birçok gelişmiş ve gelişmekte olan ülkede önemli bir yere sahiptir. Dünya’da en hızlı gelişen sektörlerden biri olmanın dışında, yarattığı gelir akımları, sağladığı istihdam olanakları ve döviz getirici rolü gibi çok sayıda özelliği bünyesinde barındırmaktadır. 1980’li yıllarla birlikte başlayan serbestleşme süreciyle beraber hızlı bir gelişim gösteren Türk turizm sektörü, son yıllarda da önemli bir ivme yakalamış ve Türkiye’yi en önemli turizm destinasyonlarından birisi haline getirmiştir. Turizm sektörünün artan önemiyle birlikte turizm araştırmalarında da ciddi bir artış yaşanmış fakat bu araştırmalarda turistlerin sosyodemografik karakteristikleri genellikle ihmal edilmiştir. Bu çalışmada, 2006-2017 yıllarını kapsayan yıllık veriler kullanılarak, seçilmiş 24 ülkeden Türkiye’ye yönelik turizm talep denklemi tespit edilmeye çalışılmıştır. Bu doğrultuda, turistlerin gelir düzeyleri, eğitim seviyeleri, yaş grupları ve geliş amaçları gibi sosyodemografik özellikleri kullanılmıştır. Çalışma kapsamında, turistlerin sahip oldukları sosyodemografik özelliklerin, turizm talebi üzerindeki etkileri Yanlılı ğı Düzeltilmiş LSDV (Least Squares Dummy Variable) tahmincisi yardımıyla belirlenmeye çalışılmış ve elde edilen sonuçlara ilişkin gerekli çıkarımlar ortaya konulmuştur

FEN BİLİMLERİ ENSTİTÜSÜ/LİSANSÜSTÜ TEZ PROJESİ

NAYLON-6/HALOYSİT NANOTÜP (HNT) KOMPOZİTLERİNİN BOZUNMAYA DAYANIM ÖZELLİKLERİNİN ARAŞTIRILMAS

Effects of Oil Price Shocks on Output in Türkiye: A Sector-Level Analysis

Bu çalışmada, Türkiye Ekonomisi için petrol fiyat şoklarının çıktı etkileri sektörel düzeyde incelenmeye çalışılmıştır. Yazarların bilgisi dahilinde, petrol fiyat şoklarının çıktı etkilerinin zamana bağlı dinamikleri, sektörel düzeyde hiçbir çalışmada incelenmemiştir. Literatürdeki bu boşluğun doldurulması amacıyla, petrol fiyat şoklarının sektörel çıktı düzeyi üzerindeki zamana bağlı etkileri, stokastik oynaklığa sahip Zamanla Değişen Parametreli Vektör Otoregresyon (TVP-VAR) yöntemiyle analiz edilmiştir. Bu doğrultuda, 2005:1-2021:10 dönemini kapsayan 28 alt sektöre ilişkin aylık üretim verisi kullanılmıştır. Etki tepki fonksiyonlarından elde edilen sonuçlar, petrol fiyat şoklarının sektörel üretim düzeyi üzerindeki etkilerinin zamana bağlı olarak değişiklik gösterebildiğini ve zamana bağlı bu değişimin sektörler arasında türdeş bir görünüme sahip olmadığını göstermektedir. Bu sonuçlar, petrol fiyat şoklarının analizinde, politika yapıcıların, ekonomik karar vericilerin ve araştırmacıların, sektörel ve zamana bağlı dinamikleri dikkate alması gerekliliğine işaret etmektedir. Bulgular, ayrıca, enerji ekonomisi literatüründeki asimetrik etki hipotezinin Türkiye Ekonomisi için geçerliliğini desteklemektedir.</p