scholarly journals Effects of the Withania somnifera supplementation on sports performance: a systematic review and meta-analysis

2022 ◽  
Vol 6 (13) ◽  
pp. 1-8
Author(s):  
Fábio Pieluhowski Didio ◽  
André Rodrigues Duarte ◽  
Giuseppe Potrick Stefani
Keyword(s):  
Literature Review ◽  
Systematic Literature Review ◽  
Athletic Performance ◽  
Methodological Quality ◽  
Withania Somnifera ◽  
Scientific Literature ◽  
Meta Analysis ◽  
Sports Performance ◽  
Performance Results

Background: Withania somnifera has been used as an ergogenic resource in recent years. In this scenario, a systematic literature review is justified to compile the findings in the scientific literature and to evaluate the methodological quality of these investigations. Aims: Our objective with this review was to evaluate the effects of Withania somnifera supplementation on sports performance in physical exercise practitioners. Material and Methods: This systematic literature review with meta-analysis addresses the effects of Withania somnifera supplementation on sports performance. Results: Of the parameters evaluated in the articles, the maximum oxygen uptake was shown to improve significantly in the three studies in which it was evaluated. Maximum strength was not influenced by the supplementation. Conclusions: The results of the present systematic literature review showed evidence that the supplementation of Withania somnifera over 500 mg to 1,250 mg before or after exercise can improve physical performance. Keywords: Withania, Sports, Dietary Supplements, Athletic Performance.

Surgical treatment of rectovaginal fistulas (systematic literature review)

2021 ◽  
pp. 30-48
Author(s):  
Andrei Anatolevich Mudrov ◽  
Aleksandr Yur’evich Titov ◽  
Mariyam Magomedovna Omarova ◽  
Sergei Alekseevich Frolov ◽  
Ivan Vasilevich Kostarev ◽  
...  
Keyword(s):  
Systematic Review ◽  
Clinical Trials ◽  
Literature Review ◽  
Systematic Literature Review ◽  
Meta Analysis ◽  
High Recurrence Rate ◽  
Surgical Interventions ◽  
Rectovaginal Fistulas ◽  
Surgical Treatments

Despite the large number of available surgical interventions aimed at the treatment of rectovaginal fistulas, the results of their use remain extremely disappointing, associated with the high recurrence rate of the disease reaching 80 %, as well as the lack of a single tactic to minimize the risk of anal incontinence and the need for colostomy. Objective: to conduct a systematic literature review in order to summarize information related to the rectovaginal fistulas surgery. The systematic review includes the results of an analysis of 97 clinical trials selected from 756 publications found in databases. Inclusion criteria: a full-text article, the presence of at least 5 patients in the study, as well as data on the outcome of surgery. Clinical trials with different surgical treatments were identified and classified into the following categories: elimination of the rectovaginal septal defect with a displaced flap (rectal and vaginal); Martius surgery; gracilis muscle transposition; transperineal procedure; abdominal procedure including endoscopic and laparoscopic methods; use of biological or biocompatible materials. Treatment outcomes vary significantly from 0 % to > 80 %. None of the studies were randomized. Due to the low quality of the identified studies, comparison of results and meta-analysis conduction were not possible. Conclusion: as a result of the systematic review, data for the analysis and development of any strategic and tactical algorithms for the treatment of RVF were not obtained. The most important questions still remain open: what and when surgical method to choose, is it necessary to form a disconnecting stoma?

scholarly journals Hospital Location Selection: A Systematic Literature Review on Methodologies and Applications

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Muhammet Gul ◽  
Ali Fuat Guneri
Keyword(s):  
Literature Review ◽  
Systematic Literature Review ◽  
Selection Criteria ◽  
Meta Analysis ◽  
Multicriteria Decision Making ◽  
Future Research ◽  
Location Selection ◽  
Research Questions ◽  
Creative Studies

The increased focus of people on the quality of health care in recent years has led hospital owners to develop strategies and policies to improve medical services through the establishment of new hospitals. For hospitals to be competitive, the hospitalʼs location and proximity to potential patients are considered crucial factors in establishing new hospitals. In this context, evaluating and selecting the most suitable hospital location to establish a new hospital from the multicriteria decision-making (MCDM) perspective is a priority for the entrepreneurs or government to gain a competitive advantage. Therefore, this study aims to present a systematic literature review of the hospital location selection problem considering the applied methods and application areas. The preferred reporting items for systematic review and meta-analysis statement (PRISMA) are used as a reference framework. Initially, known electronic databases (Web of science, IEEEXplore, Scopus, Science direct, and Google Scholar) were searched up to the early 2021. A number of 47 articles are selected and analyzed under this systematic framework based on inclusion-exclusion points. State-of-the-art developments in adopting MCDM methods and their fuzzy extensions are summarized. All the articles have been examined in a systematic taxonomy to find answers to six research questions (trend, country of origin, outlet journal, MCDM methods used, MCDM environment and criteria type, and decision criteria used). Results show that (1) AHP and GIS-based MCDM models are the most contributing approaches to the solution of this problem, (2) location selection criteria are mostly cost, demand, environment, population, government, competition in the market, and distance to some important places, (3) the fuzzy structure is also preferred in addition to the MCDM structure depending on the crisp data type, and (4) the location selection criteria are mostly considered subjective. We pay attention to promising directions that can dominate future research in this field from a methodological or applicability perspective. This study shows the current views and opportunities for researchers and practitioners and acts as a guide to encourage more creative studies in this field.

scholarly journals Corporate governance in banks: Systematic literature review and meta-analysis

2018 ◽  
Vol 16 (1-1) ◽  
pp. 113-126 ◽  
Author(s):  
Valentina Lagasio
Keyword(s):  
Corporate Governance ◽  
Literature Review ◽  
Systematic Literature Review ◽  
Meta Analysis ◽  
Group Analysis ◽  
State Ownership ◽  
Bank Performance ◽  
Significant Finding ◽  
Controlling Shareholder ◽  
Performance Results

This paper provides a two steps investigation of the literature on banking corporate governance. We firstly perform a systematic literature review on the academics papers focused on risk management, compensation and ownership structure of banks. Then we run a meta-analysis investigation over more than 2,500 observations to clarify the understanding of the relationship with performance and risk in banks. The sub-group analysis related with bank performance shows a clear and significant finding: Board ownership, CEO ownership and Controlling shareholder enhance the performance of banks. Conversely, State ownership is negatively associated with bank performance. Results of the whole investigation and directions for scholars are also discussed.

Multimorbidity and quality of life: Systematic literature review and meta-analysis

2019 ◽  
Vol 53 ◽  
pp. 100903 ◽  
Author(s):  
Tatjana T. Makovski ◽  
Susanne Schmitz ◽  
Maurice P. Zeegers ◽  
Saverio Stranges ◽  
Marjan van den Akker
Keyword(s):  
Quality Of Life ◽  
Literature Review ◽  
Systematic Literature Review ◽  
Meta Analysis

Multimorbidity and quality of life - Systematic literature review and meta-analysis

2018 ◽  
Vol 66 ◽  
pp. S327 ◽  
Author(s):  
T. Makovski ◽  
S. Schmitz ◽  
M. van den Akker ◽  
M. Zeegers ◽  
S. Stranges
Keyword(s):  
Quality Of Life ◽  
Literature Review ◽  
Systematic Literature Review ◽  
Meta Analysis

scholarly journals The influence of sleep deprivation on athletes’ performance: a systematic review

1989 ◽  
Vol 32 ◽  
Author(s):  
Marco Túlio de Mello ◽  
◽  
Adriana Souza Amaral ◽  
Andressa Silva ◽  
Carlos Magno Amaral Costa ◽  
...  
Keyword(s):  
Systematic Review ◽  
Literature Review ◽  
Sleep Deprivation ◽  
Systematic Literature Review ◽  
Athletic Performance ◽  
Present Review ◽  
Sports Performance ◽  
Inclusion Criteria ◽  
Deprivation Period ◽  
Full Analysis

Sleeping is an important strategy for athletes’ recovery and the state of sleep deprivation can influence the sports performance.The objective of the study was to carry out a systematic literature review in order to analyze the influence of sleep deprivation on the physical and athletic performance of athletes. The study was carried out from the electronic databases PubMed, Scopus, SportDiscus and Scielo. We selected original articles published and written in English or Portuguese were selected. After the search in the databases we found 143 articles were found being 45 from PubMed, 72 from Scopus, 1 from Scielo and 25 from SportDiscus. After the full analysis of the articles, only 8 of them articles were included in the present study according to the inclusion criteria. After analyzing the 8 articles included in the present review it was concluded that sleep deprivation negatively influenced physical and sports performance in 5 of the analyzed articles. In addition, it was found that the sleep deprivation period is determinant for athletes' performance in sports tasks.

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