Notes

A summary of Pharmaceutical drug Creation inside Indian Hospitals.
Competing game styles significantly impacted total match goals scored, whilst match results were also influenced by game style combinations. Overall, this study showed the significant effects of various contextual variables on game styles played by teams in the EPL. © Journal of Sports Science and Medicine.Sport-related concussion (SRC) is a public health issue of increasing concern. Sports coaches and match officials are important stakeholders in facilitating early recognition, immediate management and appropriate return-to-play following SRC. This systematic review analyses the current evidence on SRC knowledge amongst sports coaches and match officials. The review was conducted in accordance to PRISMA guideline. A qualitative analysis of knowledge on identification, management, prevention and consequences of SRC as well as return-to-play principles was performed. The Appraisal Tool for Cross-sectional Studies was employed to assess the quality and reliability of each study. Searches were conducted on PubMed, Medline Ovid, Web of Science, CINAHL, SPORTDiscus and Psycinfo. Studies included were primary studies in English published in peer-reviewed journals assessing the level of concussion knowledge or education level amongst coaches, officials or both, regardless of sports or competitive level. A total of 20880 studies were identified, from which 27 were included in this review. There were 26 cross-sectional studies and one randomized controlled trial; 20 assessed SRC knowledge amongst coaches, one considered only officials and six studies assessed both groups. Concussion knowledge amongst coaches and match officials was deemed moderate in most studies, although significant knowledge gaps were identified. There is considerable room for further education on SRC amongst coaches and officials, particularly with the less commonly recognized symptoms of SRC and misconceptions about SRC management and prevention. Beyond knowledge assessment, further investigation should explore the translation of concussion knowledge to on-field management of players with SRC. © Journal of Sports Science and Medicine.There is a lack of research on the movement patterns within Twenty20 (T20) cricket, thus the purpose of this study was to investigate the movement demands placed on elite T20 cricket players playing in The Big Bash League, in Australia, in the 2017/2018 season. Player positional movements were determined from the time motion data obtained from a portable 10 Hz global positioning (GPS) unit. Overall, all the players covered between 1.77km and 6.54km in a time ranging between 40.4 minutes and 96.5 minutes. Fast bowlers covered a mean distance of 6.5 (±0.5) km, batsmen 1.7 (±1.2) km and fielders 5.9 (±0.9) km. This is the first study that has looked at the movement demands of players in The Big Bash League and found that bowlers have the highest movement demands followed by fielding. With that, arguably, more attention needs to be devoted to bowling and particularly fielding which is often not prioritized. However, overall demands of T20 cricketers have decreased. Cricketers and coaches need to ensure that they adapt training to ensure that their players are physically prepared for the associated demands. © Journal of Sports Science and Medicine.While the time course of muscle-tendon unit (MTU) function and structure following short (1 min) and long (5 min) durations of static stretching has already been investigated, less is known about medium stretch durations. Therefore, the purpose of this study was to investigate the time course of these parameters following 3 min of static stretching of the plantar flexor muscles. Fourteen healthy volunteers were tested on two separate days in a random order with two different rest times (0 min, 5 min) after 3 × 60 s of stretching. During each test, the dorsiflexion range of motion (RoM), passive resistive torque (PRT), and maximum voluntary contraction (MVC) were measured with a dynamometer. Ultrasonography of the gastrocnemius medialis (GM) muscle-tendon junction displacement and motion capture allowed us to determine the length changes in the tendon and muscle, respectively, and hence to calculate their stiffness. We observed an increase in RoM and a decrease in PRT and muscle-tendon stiffness at 0 min and 5 min post-stretching. This can be attributed to a decrease in muscle stiffness, as a decrease in PRT and muscle stiffness was observed up to 5 min after the stretching. No changes were detected in MVC torque and tendon stiffness. Static stretching for 3 × 60 s changes the muscle-tendon functions (RoM, PRT) for at least 5 min. These changes are related to mechano-morphological changes of the muscle, but not the tendon structure. © Journal of Sports Science and Medicine.This paper investigated the impact of eye-closed and weighted training (EWMT) on the stroke effect of adolescent table tennis players. Forty-eight adolescent table tennis players were randomly selected from the China Table Tennis College and were divided into two groups as 1) the experimental group (EG, n = 24) in which they engaged in multi-ball exercise with eye-closed and weighted swing for 10 weeks, and 2) the control group (CG, n = 24) in which they received a normal training without eye-closed and weighted swing intervention. The stroke effect was assessed by three outcome measures accuracy, stability, and ball speed. Results showed that 1) both the traditional training method and EWMT can improve the stroke effect of adolescent table tennis players. 2) In terms of accuracy, the number of stroke in the corner area was significantly different between EG and CG after the experiment (p = 0.022, p less then 0.001, respectively). 3) In terms of stroke stability, there was a significant difference in the number of net ball strokes between EG and CG after the experiment (p = 0.014). 4) In terms of ball speed, there was no significant difference between EG and CG after the experiment (p = 0.871). 5) After EWMT, the stroke stability of backspin had more significant improvement than that of topspin. Thus, compared with the traditional training method, the EWMT method can improve the stroke effect of adolescent table tennis players in terms of accuracy and stability more significantly; the EWMT method can improve the stroke effect of backspin more significantly than that of topspin in terms of stability. © Journal of Sports Science and Medicine.A functional single-nucleotide polymorphism (SNP) in the catechol-O-methyltransferase (COMT) gene (rs4680) is a gene variant that has been shown to predict the ability to maintain cognitive agility during combat and competition. Critically, COMT Met (low-activity; high dopamine) allele carriers outperform Val (high-activity; low dopamine) homozygotes on a variety of cognitive tasks. However, the relationship between genotype and cognitive performance appears to reverse under stressful conditions. Stress increases pre-frontal cortex dopamine (PFC DA) levels, and Met allele carriers (with higher DA) show performance deficits relative to Val allele carriers. This pattern reflects the inverted U-shaped function of DA activity where too little (Val allele) or too much (Met allele carriers under stress) DA is associated with poor cognitive performance. The Val allele advantage for stress resiliency is referred to as the COMT "warrior/ worrier" model. In line with this model, we predicted that elite level mixed martial arts (MMA) fighters would be more likely than athlete controls to carry the GG (warrior) genotype compared to an athlete group and a non-athlete group. Based on findings in our previous studies, we also assessed the stress biomarkers cortisol and salivary alpha-amylase (sAA). There was an overall significant difference in genotype frequencies between groups (p =0.01) and the MMA group showed a significantly greater GG (warrior) genotype frequency than the non-athlete control group (p = 0.003). There was not a significant group x genotype interaction for the cortisol or sAA; however, the non-athlete GG group had significantly higher cortisol than the A/- group (p = 0.038). Combined, our findings suggest that the "warrior" genotype may play a participation role in combat sports. © Journal of Sports Science and Medicine.Although the role of shoe constructions on running injury and performance has been widely investigated, systematic reviews on the shoe construction effects on running biomechanics were rarely reported. Therefore, this review focuses on the relevant research studies examining the biomechanical effect of running shoe constructions on reducing running-related injury and optimising performance. Searches of five databases and Footwear Science from January 1994 to September 2018 for related biomechanical studies which investigated running footwear constructions yielded a total of 1260 articles. After duplications were removed and exclusion criteria applied to the titles, abstracts and full text, 63 studies remained and categorised into following constructions (a) shoe lace, (b) midsole, (c) heel flare, (d) heel-toe drop, (e) minimalist shoes, (f) Masai Barefoot Technologies, (g) heel cup, (h) upper, and (i) bending stiffness. Some running shoe constructions positively affect athletic performance-related and injury- variables and prevent running-related injuries. © Journal of Sports Science and Medicine.The coach-rating scale for Achievement-Motivated Behavior in Individual Sports (AMBIS-I) was constructed to measure achievement motivation, not from athletes' own views but from coaches' perspectives. The tool was already checked for reliability as well as content, factorial, and concurrent criterion validity (Zuber and Conzelmann, 2019). To further establish construct and criterion validity, two different samples were involved. Sample 1 included 67 experienced coaches rating their 278 athletes on the three AMBIS-I dimensions proactivity, ambition and commitment. In sample 2, 157 athletes completed self-report questionnaires measuring motivational and volitional concepts. Congruent and discriminant construct validity were assessed using the QCV-procedure (Westen and Rosenthal, 2003) by comparing experts' predicted and empirically observed correlations between the coaches' ratings on the AMBIS-I with the self-ratings of validated instruments. Sanguinarine cost Consistent with theoretical expectations, achievement goal orientations, self-determination and self-optimization show significant positive relationships to the AMBIS-I scales, the negatively formulated volitional concepts, negative ones. As indicated by the 0.87 ≤ ralerting-CV ≤ 0.95, the general patterns of the expert's predictions triangulate consistently with the observed correlations. The findings concerning absolute agreement were mixed. Even though the ICCs suggest sufficient to good consistency, the values of rcontrast-CV are considerably lower. To indicate criterion validity, AMBIS-I display medium to large correlations with the actual performance level estimated by the coaches and small to medium correlations with the assigned potential for subsequent success one year later. In summary, we found solid indications, that AMBIS-I is a valid measure of achievement-motivated behavior in individual sports from coaches' perspective. © Journal of Sports Science and Medicine.
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