EXAMINING THE EFFECTS OF THE PLIOMETRIC (JUMP SQUAT) EXERCISE ON VERTICAL JUMP IN FEMALE VOLLEYBALL PLAYERS

The aim of present study was to examine the effects of plyometric jump (jump squat) exercises on vertical jump, and to investigate the relation between these exercises and some physical fitness and other defining characteristics in female volleyball players. The sampling of the study consisted of 10 voluntary female players, who were active licensed players at Bursa Nova Sports Club in Turkey Volleyball 2nd League, and who had the following defining characteristics; age: 16±0.8 years; sports age: 9.5±0.1 years; height: 176±6.7 cm; body weight: 65.8±5.7 kg; fat %: 26.9±4.3; fat amount: 17.7±4.2 kg; lean weight 47.6 ± 3.1 kg, total body fluid 34.9±2.3. The participants did not face any disabilities or diseases in the past six months; and participated in the training program regularly. They applied a normal diet during the entire study process. A total of 6 trainings a week, 3 sets in each training, 30 jumps in each set, which means a total of a total of 24 trainings, 72 sets and 2160 plyometric jumps (jump squat) were added to the seasonal training programs of the players for 4 weeks. The Bosco Test was used. On Sunday, one day before the plyometric studies were started, the other 4 Vertical Jump Measurement Tests (T2, T3, T4, T5) -including the determining the vertical jump measurements test (T1) - were carried out on Sundays every weekend. The body composition was determined by the Tanita Body Composition Analyzer TBF-300. The data that were obtained in this way were analyzed with One-Way ANOVA and Pearson Correlations Coefficient tests in the SPSS for Windows 22 Statistical Program. As a result, a statistically significant relation was detected between the vertical jump, which is one of the descriptive characteristics of volleyball players, and the amount of fat % and fat (p˂0.05). The vertical jump arithmetic averages were determined to be T1 33.8±4.8 cm; T2 34.4±4.5 cm; T3 35.2±4.7 cm; T4 36.5±4.9 cm; T5 36.4±4.7 cm (F=34.353; p<0.05). The effects of the plyometric exercises on vertical jump were found to be F=34.353 (p<0.001). It can be claimed that the plyometric exercises that were applied on the volleyball players have positive effects and an inversely-proportional relation with body fat %, fat amount, and vertical jump.  Article visualizations

12 Haftalık Kompleks ve Kontrast Kuvvet Antrenmanlarının Futbolcularda Fiziksel Özelliklerin Etkisi:

The aim of present study was to investigate the effect of 12-weeks complex and contrast training applied to soccer players on selected physical Characteristics. A total of 23 university students playing soccer in the university team participated in the study voluntarily. Subjects were randomly divided into two groups; complex (CPX) and contrast (CNT) training protocols. During 12-weeks, CPX and CNT training groups performed strength training in addition to soccer training 2 days a week, over 7 hours (4-5 units). On the first day, one repetition maximum (1RM) strength tests (back squat, calf, and leg extension) of all subjects were measured respectively. On the second day, all athletes’ height, body weight, body fat ratio, (20m) sprint, vertical jump and agility performance tests were measured at the beginning and end of the 12-weeks study.  As a result of the analysis of the data, a statistically significant difference was found in the values of the first and last measurements (1RM test) (back squat, calf and leg extension) between the groups of the CPX strength training group subjects and CNT strength training group (p< .05). There was no statistically significant difference between the groups in speed (20m), vertical jump, agility and smash dive performance tests (p > .05). Although these results are not thought to be conclusive yet, there may be important information for coaches, especially during the training prescription and physical performance control of football players

An investigation of the effects of static and dynamic core exercises applied to football players aged 10–12 years on some physical fitness characteristics: Effects of static and dynamic core exercises

In this study, it was aimed to examine the effects of static and dynamic core exercises applied to football players aged 10-12 on some physical fitness characteristics. The mean age of 12,4±0,4 years, average body weight of 43,2±0.31 kg, average height of 153,5±0.32 cm and average age of 4.32 years in sports, 32 male football players who regularly trained participated voluntarily. The athletes participating in the study were randomly divided into two groups as control and experimental groups. Different training programs were applied to these groups; Experimental group (EG) was given routine volleyball training (3 days/week) for 8 weeks, static and dynamic core exercises for 30 minutes total training time. The control group (CG) only did routine volleyball training. Before the studies, pre-test measurements (agility, (20m) speed, balance, strength and vertical jump) of both groups were carried out. At the end of 8 weeks, the last test measurements of the groups were taken. A t-test was used to compare the preliminary and final values of the groups (dependent sample). When the first and last test measurements of the groups were compared between the groups; According to the analysis of the data, a statistically significant difference was observed in the balance test value (p<0.05). In the comparison between the groups, no significant difference was found in the agility test, (20m) sprint test, strength test and vertical jump measurement values ​​(p > 0.05). In addition to regular football training, dynamic and static core programs applied within the scope of conditioning hand exercises contributed positively to some measured physical fitness characteristics of the athletes

Cointegration and adjustment dynamics of REIT and stock markets during the global financial and European debt crises

This paper analyses the cointegration relationship between the REIT and stock markets of ten developed countries during the 2005-2013 period, which is characterised by the global financial and the European debt crises. Given the structural breaks in the data, the effect of these two crises is examined separately by dividing the sample period into four equal parts and by using M-TAR cointegration analysis. The results suggest that the cointegration between the stock and REIT markets was not a globally observed feature prior to the twin crises. The strong and globally valid cointegration observed after 2007 was due to the common negative response of both markets to the unexpected massive shocks. These shocks also led to bilateral causality and strong feedback effects between these two markets, thus strictly limiting the diversification benefits of the REIT market during the crisis period

Treatment delays and in-hospital outcomes in acute myocardial infarction during the COVID-19 pandemic: A nationwide study

*İnci, Sinan ( Aksaray, Yazar )Objective: Delayed admission of myocardial infarction (MI) patients is an important prognostic factor. In the present nationwide registry (TURKMI-2), we evaluated the treatment delays and outcomes of patients with acute MI during the Covid-19 pandemic and compaired with a recent pre-pandemic registry (TURKMI-1). Methods: The pandemic and pre-pandemic studies were conducted prospectively as 15-day snapshot registries in the same 48 centers. The inclusion criteria for both registries were aged ≥18 years and a final diagnosis of acute MI (AMI) with positive troponin levels. The only difference between the 2 registries was that the pre-pandemic (TURKMI-1) registry (n=1872) included only patients presenting within the first 48 hours after symptom-onset. TURKMI-2 enrolled all consecutive patients (n=1113) presenting with AMI during the pandemic period. Results: A comparison of the patients with acute MI presenting within the 48-hour of symptom-onset in the pre-pandemic and pandemic registries revealed an overall 47.1% decrease in acute MI admissions during the pandemic. Median time from symptom-onset to hospital-arrival increased from 150 min to 185 min in patients with ST elevation MI (STEMI) and 295 min to 419 min in patients presenting with non-STEMI (NSTEMI) (p-values <0.001). Door-to-balloon time was similar in the two periods (37 vs. 40 min, p=0.448). In the pandemic period, percutaneous coronary intervention (PCI) decreased, especially in the NSTEMI group (60.3% vs. 47.4% in NSTEMI, p<0.001; 94.8% vs. 91.1% in STEMI, p=0.013) but the decrease was not significant in STEMI patients admitted within 12 hours of symptom-onset (94.9% vs. 92.1%; p=0.075). In-hospital major adverse cardiac events (MACE) were significantly increased during the pandemic period [4.8% vs. 8.9%; p<0.001; age- and sex-adjusted Odds ratio (95% CI) 1.96 (1.20-3.22) for NSTEMI, p=0.007; and 2.08 (1.38-3.13) for STEMI, p<0.001]. Conclusion: The present comparison of 2 nationwide registries showed a significant delay in treatment of patients presenting with acute MI during the COVID-19 pandemic. Although PCI was performed in a timely fashion, an increase in treatment delay might be responsible for the increased risk of MACE. Public education and establishing COVID-free hospitals are necessary to overcome patients' fear of using healthcare services and mitigate the potential complications of AMI during the pandemic