scholarly journals Atheroprotective Effects and Mechanisms of Postmarketing Chinese Patent Formulas in Atherosclerosis Models: A Systematic Review

2021 ◽  
Vol 2021 ◽  
pp. 1-19
Author(s):  
Shiqi Chen ◽  
Xiaoxiao Wu ◽  
Tong Li ◽  
Yang Li ◽  
Baofu Wang ◽  
...  
Keyword(s):  
Systematic Review ◽  
Methodological Quality ◽  
Lipid Level ◽  
Current Evidence ◽  
Qualitative Synthesis ◽  
Multiple Components ◽  
Novel Approach ◽  
Chinese Patent ◽  
Antioxidant Stress

Background. Some postmarketing Chinese patent formulas have been widely used to treat atherosclerosis (AS) and play critical roles in Chinese healthcare. However, the usage of these herbs is yet controversial due to unclear effects and lack of understanding of the mechanism of action. With the modernization of traditional Chinese formulas, we are to elucidate the atheroprotective properties of these remedies from successful postmarketing experiments in vivo. Methods. In this systematic review, we critically searched the databases, applied stringent criteria, assessed the methodological quality, and examined the current evidence in vivo. Results. Consequently, 60 studies were included in the present qualitative synthesis. Data on models, high-fat diet, intervention time, outcome measures, efficacy, and mechanisms were collected. Finally, 23 formulas that could alleviate AS were correlated to the amelioration of plaques, improvement of plaque stability, modification of lipid level and lipid metabolism, and the effects of anti-inflammation and antioxidant stress with multiple components and targets. However, the methodological quality was low and incomplete among the included literature. Conclusions. Thus, taken together, the studies on postmarketing Chinese patent formulas would provide a novel approach to improve the treatment of AS, and rigorously designed studies would provide high-quality evidence.

scholarly journals Appraisal of systematic reviews on interventions for postpartum depression: systematic review

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Ryan Chow ◽  
Eileen Huang ◽  
Allen Li ◽  
Sophie Li ◽  
Sarah Y. Fu ◽  
...  
Keyword(s):  
Systematic Review ◽  
Postpartum Depression ◽  
Systematic Reviews ◽  
Methodological Quality ◽  
A Priori ◽  
Behavioural Therapy ◽  
Therapeutic Interventions ◽  
Current Evidence ◽  
Cochrane Library ◽  
Measurement Tool

Abstract Background Postpartum depression (PPD) is a highly prevalent mental health problem that affects parental health with implications for child health in infancy, childhood, adolescence and beyond. The primary aim of this study was to critically appraise available systematic reviews describing interventions for PPD. The secondary aim was to evaluate the methodological quality of the included systematic reviews and their conclusions. Methods An electronic database search of MEDLINE, Embase, and the Cochrane Library from 2000 to 2020 was conducted to identify systematic reviews that examined an intervention for PPD. A Measurement Tool to Assess Systematic Reviews was utilized to independently score each included systematic review which was then critically appraised to better define the most effective therapeutic options for PPD. Results Of the 842 studies identified, 83 met the a priori criteria for inclusion. Based on the systematic reviews with the highest methodological quality, we found that use of antidepressants and telemedicine were the most effective treatments for PPD. Symptoms of PPD were also improved by traditional herbal medicine and aromatherapy. Current evidence for physical exercise and cognitive behavioural therapy in treating PPD remains equivocal. A significant, but weak relationship between AMSTAR score and journal impact factor was observed (p = 0.03, r = 0.24; 95% CI, 0.02 to 0.43) whilst no relationship was found between the number of total citations (p = 0.27, r = 0.12; 95% CI, − 0.09 to 0.34), or source of funding (p = 0.19). Conclusion Overall the systematic reviews on interventions for PPD are of low-moderate quality and are not improving over time. Antidepressants and telemedicine were the most effective therapeutic interventions for PPD treatment.

scholarly journals Is Non-Chlamydial Non-Gonococcal Urethritis Associated with Significant Clinical Complications in Men? A Systematic Review

2020 ◽  
Vol 14 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Cassandra E.L. Fairhead ◽  
Alexander Hampson ◽  
Louis Dwyer-Hemmings ◽  
Nikhil Vasdev
Keyword(s):  
Systematic Review ◽  
Reactive Arthritis ◽  
Case Reports ◽  
Case Series ◽  
Current Evidence ◽  
Future Research ◽  
Qualitative Synthesis ◽  
Cross Sectional ◽  
Gonococcal Urethritis ◽  
Clinical Complications

Background: It is estimated that between 50 and 89% of non-gonococcal urethritis is not caused by Chlamydia trachomatis. Associations between non-chlamydial non-gonococcal urethritis (NCNGU) with balanoposthitis, epididymo-orchitis and reactive arthritis have been suggested, but evidence to support these often-theoretical relationships is sparse and further investigation is called for. Concerns over increasing antimicrobial resistance has rendered the need for clarity over this question ever more pressing in recent years. A review of the current evidence on the complications of NCNGU in men is therefore urgently warranted. Objective: This systematic review summarizes and evaluates the available evidence that NCNGU, whether symptomatic or asymptomatic, causes the significant complications that are already well-recognized to be associated with non-gonococcal urethritis. These significant complications are epididymo-orchitis, balanoposthitis, and sexually-acquired reactive arthritis (Reiter's syndrome) including arthritis or conjunctivitis. Summary: We conducted a systematic review and qualitative synthesis using the Preferred Reporting Items for Systematic Reviews and Meta-Analysis framework. Five databases (PubMed, EMBASE, Cumulative Index to Nursing and Allied Health Literature, PsycINFO, and British Nursing Index) were searched. We included studies that measured clinical outcome after diagnosis of NCNGU in men. Bias was assessed using variations of the Newcastle-Ottawa scale. Data were extracted and entered into a pre-written data abstraction proforma. Seven peer-review studies were included. This included 2 retrospective cohort studies, 1 case series, 2 case reports and 2 cross-sectional studies. The studies described and analyzed 3 types of complication: balanitis, posthitis and/or meatitis; reactive arthritis and/or conjunctivitis; and epididymitis. All studies reported one or more complications. Key Messages: This review identifies an important avenue for future research: while the available evidence suggests that NCNGU has the potential to cause significant complications in men, with the strongest evidence existing for balanitis, posthitis and/or meatitis, the nature and significance of these relationships is far from clear. The findings of this review suggest that prospective, adequately powered research into whether there is a causal link between NCNGU and significant clinical complications in men would be highly worthwhile. The findings of this review raise important questions about the utility of the term NCNGU in research and clinical practice.

The Efficacy and Safety of Pharmacological Treatments for Post-stroke Aphasia

2018 ◽  
Vol 17 (7) ◽  
pp. 509-521 ◽  
Author(s):  
Xiaoyan Zhang ◽  
Bohui Shu ◽  
Dongdong Zhang ◽  
Lina Huang ◽  
Qizhi Fu ◽  
...  
Keyword(s):  
Systematic Review ◽  
Methodological Quality ◽  
Spontaneous Speech ◽  
Current Evidence ◽  
Controlled Trials ◽  
Auditory Comprehension ◽  
Efficacy And Safety ◽  
Pharmacological Treatments ◽  
Post Stroke ◽  
Oral Expression

Background: Aphasia is a common complication after stroke, and traditional speech and language therapy (SLT) has a limited effect on post-stroke aphasia (PSA). While there has been an increasing number of controlled clinical trials on the efficacy of drugs in the treatment of PSA, there have been very few systematic reviews on the efficacy and safety of pharmacological treatments in people with PSA. Objective: To evaluate the efficacy and safety of pharmacological interventions for PSA. Methods: The Cochrane Central Register of Controlled Trials (CENTRA), PubMed, Embase, Chinese Journal Full-text Database (CJFD), China Biology Medicine disc (CBMdisc), Wanfang Data and VIP Information System were searched for randomized controlled trials about pharmacological treatments for PSA. Literature screening using the inclusion and exclusion criteria, data extraction and methodological quality assessment of the included studies were completed by two independent reviewers. Methodological quality was considered high for modified Jadad quality scale scores of 4 to 7. RevMan 5.3 software was used to conduct a meta-analysis of high-quality studies. Results: Fifteen studies (578 participants) satisfied the eligibility criteria for this systematic review. Five trials (277 participants) assessed donepezil, four studies (124 participants) assessed memantine, three studies (72 participants) assessed bromocriptine, one trial (45 patients) evaluated galantamine, one study (21 patients) evaluated amphetamine, and one trial (39 patients) evaluated levodopa. The systematic review showed that donepezil achieved remarkable results in terms of the aphasia quotient (AQ) (SMD 0.82, 95% CI 0.48-1.17, P < 0.00001), repetition ability (SMD 0. 81, 95% CI 0.57-1.06, P < 0.00001), naming ability (SMD 0.56, 95% CI 0.29-0. 84, P < 0.00001), auditory comprehension (SMD 0.85, 95% CI 0.58-1. 13, P< 0.00001) and oral expression (SMD 0.90, 95% CI 0.54-1.26, P < 0.00001). Memantine showed no pronounced improvement in auditory comprehension (SMD 0.35, 95% CI -0.05-0.74, P = 0.09) but did improve the AQ (SMD 0.57, 95% CI 0.09-1.06, P = 0. 02), naming ability (SMD 0.81, 95% CI 0.38-1.25, P = 0.0002), spontaneous speech (SMD 0.76, 95% CI 0. 39- 1.13, P < 0.0001), and repetition ability (SMD 0.37, 95% CI 0.01-0.73, P = 0.04). Bromocriptine showed pronounced improvement in naming ability (SMD -0.20, 95% CI- 0.67-0.26, P = 0.39), verbal fluency (SMD 0.02, 95% CI 0.53-0.56, P = 0.95), and repetition ability (SMD 0.29, 95% CI -0.23-0. 81, P = 0.28). There is limited and inconclusive evidence for galantamine, amphetamine and levodopa. Conclusion: Current evidence suggests that drugs, such as donepezil and memantine, can improve the prognosis of PSA. Donepezil has a significant effect in improving the ability of auditory comprehension, naming, repetition and oral expression. Memantine has a significant effect in improving the ability of naming, spontaneous speech and repetition. Bromocriptine showed no significant improvements in the treatment of aphasia after stroke. Data regarding galantamine, amphetamine and levodopa in the treatment of aphasia after stroke are limited and inconclusive.

Associations between anger and chronic primary pain: a systematic review and meta-analysis

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Tomonori Adachi ◽  
Keiko Yamada ◽  
Haruo Fujino ◽  
Kiyoka Enomoto ◽  
Masahiko Shibata
Keyword(s):  
Systematic Review ◽  
Methodological Quality ◽  
Negative Emotion ◽  
Data Extraction ◽  
Meta Analysis ◽  
Perceived Injustice ◽  
Qualitative Synthesis ◽  
Action Tendency ◽  
Comprehensive Search ◽  
Meta Analyses

Abstract Objectives Anger is a negative emotion characterized by antagonism toward someone or something, is rooted in an appraisal or attribution of wrongdoing, and is accompanied by an action tendency to undo the wrongdoing. Anger is prevalent in individuals with chronic pain, especially those with chronic primary pain. The associations between anger and pain-related outcomes (e.g., pain intensity, disability) have been examined in previous studies. However, to our knowledge, no systematic review or meta-analysis has summarized the findings of anger-pain associations through a focus on chronic primary pain. Hence, we sought to summarize the findings on the associations of anger-related variables with pain and disability in individuals with chronic primary pain. Methods All studies reporting at least one association between anger-related variables and the two pain-related outcomes in individuals with chronic primary pain were eligible. We searched electronic databases using keywords relevant to anger and chronic primary pain. Multiple reviewers independently screened for study eligibility, data extraction, and methodological quality assessment. Results Thirty-eight studies were included in this systematic review, of which 20 provided data for meta-analyses (2,682 participants with chronic primary pain). Of the included studies, 68.4% had a medium methodological quality. Evidence showed mixed results in the qualitative synthesis. Most anger-related variables had significant positive pooled correlations with small to moderate effect sizes for pain and disability. Conclusions Through a comprehensive search, we identified several key anger-related variables associated with pain-related outcomes. In particular, associations with perceived injustice were substantial.

scholarly journals Association between Female Reproductive Health and Mancozeb: Systematic Review of Experimental Models

2020 ◽  
Vol 17 (7) ◽  
pp. 2580 ◽  
Author(s):  
Serena Bianchi ◽  
Stefania Annarita Nottola ◽  
Diana Torge ◽  
Maria Grazia Palmerini ◽  
Stefano Necozione ◽  
...  
Keyword(s):  
Systematic Review ◽  
Reproductive Health ◽  
Biological Fluids ◽  
Experimental Studies ◽  
Epidemiological Studies ◽  
Experimental Models ◽  
Current Evidence ◽  
Female Reproductive Health

Mancozeb is a widely used fungicide approved for use in agriculture in many countries with long persistence in the environment and consequent bioaccumulation in tissues and biological fluids. Despite the large amount of studies published in recent years, the relationship between mancozeb exposure and female reproductive health is not fully elucidated. In order to summarize current evidence on mancozeb exposure and female reproductive disease, we performed a systematic review of literature. Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were used to make this review. An adapted version of the National Toxicology Program’s Office of Health and Assessment and Translation (OHAT) framework was used to evaluate the risk of bias. Electronic search on two databases (PubMed and Scopus) was used to find experimental studies (in vitro and in vivo) on mancozeb exposure. The database search identified 250 scientific articles, 20 of which met our inclusion criteria. Selected data were then reviewed and summarized in tables. Overall, mancozeb represents a hazard for female reproductive health, with different mechanisms of action. Undoubtedly more experimental and epidemiological studies are required to definitively validate mancozeb as reproductive toxicant.

scholarly journals Telerehabilitation Versus Standard Care for Improving Cognitive Function and Quality of Life for Adults with Traumatic Brain Injury: a Systematic Review

2018 ◽  
Author(s):  
Samantha Betts ◽  
Lana Feichter ◽  
Zoe Kleinig ◽  
Alice O'Connell-Debais ◽  
Henry Thai ◽  
...  
Keyword(s):  
Systematic Review ◽  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Methodological Quality ◽  
Randomised Controlled Trials ◽  
Critical Appraisal ◽  
Current Evidence ◽  
Cochrane Library ◽  
Controlled Trials ◽  
Randomised Controlled

ABSTRACT Traumatic brain injury (TBI) is the most significant cause of death and severe disability following major trauma within Australia. Populations at risk include young adults aged 15 to 34, older adults, and military personnel. The main form of intervention following traumatic brain injury is rehabilitation, which places a large demand on the healthcare system. Telerehabilitation involves interventions delivered via telecommunication, which can improve accessibility and reduce this burden. There have been no systematic reviews conducted on the effectiveness of telerehabilitation in treating traumatic brain injury. Purpose: To examine the effectiveness of telerehabilitation for adults with traumatic brain injury. Methods: A systematic search of Medline, Embase, the Cumulative Index of Nursing and Allied Health Literature (CINAHL), Scopus, The Cochrane Library, OTSeeker and Google Scholar was conducted. Studies were included with participants aged 18 to 64 with traumatic brain injury and receiving telerehabilitation interventions. Methodological quality was assessed using the critical appraisal tools: Critical Appraisal Skills Programme (CASP) checklist for randomised controlled trials, and McMaster Critical Review for Quantitative Studies for non-randomised studies. Results: Three randomised controlled trials, one pseudo-randomised controlled trial, one case-control trial and one pre-post case series were included in this systematic review. Critical appraisal of the included studies revealed overall methodological quality to be moderate. A range of interventions with differing parameters were used as part of telerehabilitation. Collectively, there is some consistent evidence to indicate that telerehabilitation may be equally effective as other forms of care in the delivery of cognitive and psychological interventions, in addressing memory and depressive symptoms for adults with mild to severe traumatic brain injury. However, it is unclear if it is superior to other forms of care. Conclusions: A small number of studies have investigated the effect of telerehabilitation for adults with traumatic brain injury. The current evidence base is limited due to lack of standardised intervention parameters, outcomes measures and robust sample size. Despite these limitations, telerehabilitation may offer a complementary model of care for adults with traumatic brain injury, especially in instances where traditional models of care may not be readily accessible (such as those in rural and remote areas).

scholarly journals Recommendations for the Design and Implementation of Virtual Reality for Acquired Brain Injury Rehabilitation: Systematic Review

10.2196/26344 ◽  
2021 ◽  
Vol 23 (7) ◽  
pp. e26344
Author(s):  
Sophie Brassel ◽  
Emma Power ◽  
Andrew Campbell ◽  
Melissa Brunner ◽  
Leanne Togher
Keyword(s):  
Systematic Review ◽  
Virtual Reality ◽  
Brain Injury ◽  
Systematic Reviews ◽  
Methodological Quality ◽  
Current Evidence ◽  
Future Research ◽  
Inclusion Criteria ◽  
Design And Implementation ◽  
Assessment And Treatment

Background Virtual reality (VR) is increasingly being used for the assessment and treatment of impairments arising from acquired brain injuries (ABIs) due to perceived benefits over traditional methods. However, no tailored options exist for the design and implementation of VR for ABI rehabilitation and, more specifically, traumatic brain injury (TBI) rehabilitation. In addition, the evidence base lacks systematic reviews of immersive VR use for TBI rehabilitation. Recommendations for this population are important because of the many complex and diverse impairments that individuals can experience. Objective This study aims to conduct a two-part systematic review to identify and synthesize existing recommendations for designing and implementing therapeutic VR for ABI rehabilitation, including TBI, and to identify current evidence for using immersive VR for TBI assessment and treatment and to map the degree to which this literature includes recommendations for VR design and implementation. Methods This review was guided by PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses). A comprehensive search of 11 databases and gray literature was conducted in August 2019 and repeated in June 2020. Studies were included if they met relevant search terms, were peer-reviewed, were written in English, and were published between 2009 and 2020. Studies were reviewed to determine the level of evidence and methodological quality. For the first part, qualitative data were synthesized and categorized via meta-synthesis. For the second part, findings were analyzed and synthesized descriptively owing to the heterogeneity of data extracted from the included studies. Results In the first part, a total of 14 papers met the inclusion criteria. Recommendations for VR design and implementation were not specific to TBI but rather to stroke or ABI rehabilitation more broadly. The synthesis and analysis of data resulted in three key phases and nine categories of recommendations for designing and implementing VR for ABI rehabilitation. In the second part, 5 studies met the inclusion criteria. A total of 2 studies reported on VR for assessment and three for treatment. Studies were varied in terms of therapeutic targets, VR tasks, and outcome measures. VR was used to assess or treat impairments in cognition, balance, and anxiety, with positive outcomes. However, the levels of evidence, methodological quality, and inclusion of recommendations for VR design and implementation were poor. Conclusions There is limited research on the use of immersive VR for TBI rehabilitation. Few studies have been conducted, and there is limited inclusion of recommendations for therapeutic VR design and implementation. Future research in ABI rehabilitation should consider a stepwise approach to VR development, from early co-design studies with end users to larger controlled trials. A list of recommendations is offered to provide guidance and a more consistent model to advance clinical research in this area.

scholarly journals Relationship between Training Load Management and Immunoglobulin A to Avoid Immunosuppression after Soccer Training and Competition: A Theoretical Framework Based on COVID-19 for Athletes’ Healthcare

Healthcare ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 856
Author(s):  
Markel Rico-González ◽  
José Pino-Ortega ◽  
Filipe Manuel Clemente ◽  
Naia Bustamante-Hernández
Keyword(s):  
Systematic Review ◽  
Immunoglobulin A ◽  
Training Load ◽  
Return To Play ◽  
Current Evidence ◽  
Load Management ◽  
Upper Respiratory Tract ◽  
Qualitative Synthesis ◽  
Salivary Iga ◽  
Repeated Sprint

Immunoglobulin A (IgA), which is the main effector against upper respiratory tract viruses such as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has been related to training load management. The aim of this systematic review was to establish the relationship between training load and salivary IgA based on current evidence in order to avoid immunosuppression after exercise and players´ vulnerability to virus contagion. A systematic review of relevant articles was carried out using two electronic databases (PubMed and Web of Science) until 19 May 2021. From a total of 127 studies initially found, 23 were included in the qualitative synthesis. These studies were clustered depending on stress level. The salivary IgA was analysed considering soccer-specific treadmill exercise and repeated sprint drills (n = 5), matches (n = 7), and during certain periods during the season or pre-season (n = 11). Repeated sprint ability tests and treadmill exercises are suitable exercises for the first steps on return to play periods yet still maintain social distance. A rest or moderate training sessions (technical/tactical) are suggested after official matches to ensure 16–18 h to recover IgA levels, while periods with multiple matches per week with limited recovery time should be avoided. Weekly training load should assume a small increment (<10%) to ensure IgA immune responses, especially, during the post coronavirus disease 2019 (COVID-19) season.

scholarly journals Use of artificial intelligence for image analysis in breast cancer screening programmes: systematic review of test accuracy

BMJ ◽  
2021 ◽  
pp. n1872
Author(s):  
Karoline Freeman ◽  
Julia Geppert ◽  
Chris Stinton ◽  
Daniel Todkill ◽  
Samantha Johnson ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Artificial Intelligence ◽  
Systematic Review ◽  
Cancer Screening ◽  
Breast Cancer Screening ◽  
Prospective Studies ◽  
Methodological Quality ◽  
Current Evidence ◽  
Test Accuracy ◽  
Screening Practice

Abstract Objective To examine the accuracy of artificial intelligence (AI) for the detection of breast cancer in mammography screening practice. Design Systematic review of test accuracy studies. Data sources Medline, Embase, Web of Science, and Cochrane Database of Systematic Reviews from 1 January 2010 to 17 May 2021. Eligibility criteria Studies reporting test accuracy of AI algorithms, alone or in combination with radiologists, to detect cancer in women’s digital mammograms in screening practice, or in test sets. Reference standard was biopsy with histology or follow-up (for screen negative women). Outcomes included test accuracy and cancer type detected. Study selection and synthesis Two reviewers independently assessed articles for inclusion and assessed the methodological quality of included studies using the QUality Assessment of Diagnostic Accuracy Studies-2 (QUADAS-2) tool. A single reviewer extracted data, which were checked by a second reviewer. Narrative data synthesis was performed. Results Twelve studies totalling 131 822 screened women were included. No prospective studies measuring test accuracy of AI in screening practice were found. Studies were of poor methodological quality. Three retrospective studies compared AI systems with the clinical decisions of the original radiologist, including 79 910 women, of whom 1878 had screen detected cancer or interval cancer within 12 months of screening. Thirty four (94%) of 36 AI systems evaluated in these studies were less accurate than a single radiologist, and all were less accurate than consensus of two or more radiologists. Five smaller studies (1086 women, 520 cancers) at high risk of bias and low generalisability to the clinical context reported that all five evaluated AI systems (as standalone to replace radiologist or as a reader aid) were more accurate than a single radiologist reading a test set in the laboratory. In three studies, AI used for triage screened out 53%, 45%, and 50% of women at low risk but also 10%, 4%, and 0% of cancers detected by radiologists. Conclusions Current evidence for AI does not yet allow judgement of its accuracy in breast cancer screening programmes, and it is unclear where on the clinical pathway AI might be of most benefit. AI systems are not sufficiently specific to replace radiologist double reading in screening programmes. Promising results in smaller studies are not replicated in larger studies. Prospective studies are required to measure the effect of AI in clinical practice. Such studies will require clear stopping rules to ensure that AI does not reduce programme specificity. Study registration Protocol registered as PROSPERO CRD42020213590.

Physical Activity and Safety From Crime Among Adults: A Systematic Review

2016 ◽  
Vol 13 (6) ◽  
pp. 663-670 ◽  
Author(s):  
Inacio C. M. da Silva ◽  
Valerie L. C. Payne ◽  
Adriano Akira Hino ◽  
Andrea Ramirez Varela ◽  
Rodrigo S. Reis ◽  
...  
Keyword(s):  
Physical Activity ◽  
Systematic Review ◽  
Quality Assessment ◽  
Prospective Studies ◽  
Methodological Quality ◽  
Literature Search ◽  
Current Evidence ◽  
Natural Experiments ◽  
Cross Sectional ◽  
Cross Sectional Studies

Background:The aim of this study was to review the evidence to date on the association between physical activity and safety from crime.Methods:Articles with adult populations of 500+ participants investigating the association between physical activity and safety from crime were included. A methodological quality assessment was conducted using an adapted version of the Downs and Black checklist.Results:The literature search identified 15,864 articles. After assessment of titles, abstracts and full-texts, 89 articles were included. Most articles (84.3%) were derived from high-income countries and only 3 prospective articles were identified. Articles presented high methodological quality. In 38 articles (42.7%), at least one statistically significant association in the expected direction was reported (ie, safety from crime was positively associated with physical activity). Nine articles (10.1%) found an association in the unexpected direction and 42 (47.2%) did not find statistically significant associations. The results did not change when we analyzed articles separately by sex, age, type of measurement, or domains of physical activity evaluated.Conclusions:The current evidence, mostly based on cross-sectional studies, suggests a lack of association between physical activity and safety from crime. Prospective studies and natural experiments are needed, particularly in areas with wide crime variability.

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