scholarly journals Effects of Physical Exercise on Women with Disabilities in South Korea: A Meta-Analysis

2021 ◽  
Vol 18 (23) ◽  
pp. 12791
Author(s):  
Yucheon Kim ◽  
Songyi Lee
Keyword(s):  
Physical Exercise ◽  
Meta Analysis ◽  
Effect Sizes ◽  
Exercise Session ◽  
Exercise Programs ◽  
Women With Disabilities ◽  
Individual Level ◽  
South Korean ◽  
Exercise Type ◽  
The Individual

This study is the first to conduct a comprehensive investigation of the effects of physical exercise on South Korean women with disabilities using the data of previous studies. This study performed a meta-analysis of the effect sizes of exercise programs for women with disabilities using Comprehensive Meta-Analysis 3.0 and a total of 16 papers with 154 participants. The largest effect sizes were found for changes in muscle strength (d = 2.407) for treatment effects, horseback riding (d = 3.080) for exercise type, 45–50 min (d = 3.080) for duration of a single exercise session, three times (d = 0.963) for frequency of exercise per week, 15 weeks (d = 1.974) for period of exercise and 45 times (d = 1.974) for total number of sessions. The results of this meta-analysis showed that exercise programs suitable for the individual-level characteristics of disabled individuals can and should be developed and implemented.

scholarly journals Does Resilience Help in Reducing Burnout Symptoms Among Chinese Students? A Meta-Analysis

2021 ◽  
Vol 12 ◽  
Author(s):  
Zhun Gong ◽  
Chunqin Li ◽  
Xinian Jiao ◽  
Qunzhen Qu
Keyword(s):  
Defense Mechanisms ◽  
Meta Analysis ◽  
Total Sample ◽  
Effect Sizes ◽  
Collective Behaviors ◽  
Individual Level ◽  
Gray Literature ◽  
Changing Trend ◽  
Student Burnout ◽  
The Individual

As society has evolved, student burnout has become a common problem in schools around the world, including in China. Therefore, the purpose of the current study is to explore whether resilience is related to student burnout in China and to examine the changing trend of resilience and student burnout. Moreover, we will assess gender differences and possible biases, including publication biases, small-study biases, gray literature biases, and decline effects. This meta-analysis included 34 studies, with a total of 81 effect sizes and a total sample size of 22,474. We found that resilience was negatively correlated with student burnout in the Chinese context. We also found evidence of gray literature bias in student burnout, which needs to be verified by subsequent studies. However, we found that there were decline effects in resilience, possibly because, as culture evolves, people become more focused on themselves; thus, their collective behaviors decline, leading to a decrease in their ability to adapt to the collective and the environment. We also found similar decline effects at the individual level; that is, resilience might decrease with individual age stages (from the primary to college stage), which might be related to the use of immature defense mechanisms against stress by students.

Can IGF-1 Serum Levels Really be Changed by Acute Physical Exercise? A Systematic Review and Meta-Analysis

2020 ◽  
Vol 17 (5) ◽  
pp. 575-584
Author(s):  
Diego de Alcantara Borba ◽  
Eduardo da Silva Alves ◽  
João Paulo Pereira Rosa ◽  
Lucas Alves Facundo ◽  
Carlos Magno Amaral Costa ◽  
...  
Keyword(s):  
Systematic Review ◽  
Physical Exercise ◽  
Resistance Exercise ◽  
Meta Analysis ◽  
Random Effect ◽  
Serum Levels ◽  
Exercise Session ◽  
Exercise Load ◽  
Exercise Type ◽  
Acute Physical Exercise

Background: Physical exercise plays an important role in metabolic health, especially in the insulin-like growth factor-1 (IGF-1) system. The objective of this study was to perform a systematic review and meta-analysis to evaluate the effects of a single endurance and resistance exercise session on IGF-1 serum. Methods: The systematic review was performed in SPORTDiscus, MEDLINE, PubMed, and Google Scholar databases. All analyses are based on random-effect models. The study identified 249 records of which 21 were included. Results: There was an effect of endurance exercise on total IGF-1 (P = .01), but not for free IGF-1 (P = .36). Resistance exercise similarly only affected total IGF-1 (P = .003) and not free IGF-1 (P = .37). The effect size indicated that total IGF-1 is more affected (ES = 0.81) by endurance than by resistance exercise (ES = 0.46). The present study showed that IGF-1 serum concentrations are altered by exercise type, but in conditions which are not well-defined. Conclusions: The systematic review and meta-analysis suggest that there is no determinant in serum IGF-1 changes for the exercise load characteristic. Therefore, physical exercise may be an alternative treatment to control changes in IGF-1 metabolism and blood concentration.

The Orchard Plot: Cultivating a Forest Plot for Use in Ecology, Evolution and Beyond

2019 ◽  
Author(s):  
Shinichi Nakagawa ◽  
Malgorzata Lagisz ◽  
Rose E O'Dea ◽  
Joanna Rutkowska ◽  
Yefeng Yang ◽  
...  
Keyword(s):  
Meta Analysis ◽  
R Package ◽  
Effect Sizes ◽  
Forest Plot ◽  
Point Estimates ◽  
Aggregate Effect ◽  
The Individual ◽  
Meta Analyses ◽  
Heterogeneous Effect ◽  
Intuitive Interpretation

‘Classic’ forest plots show the effect sizes from individual studies and the aggregate effect from a meta-analysis. However, in ecology and evolution meta-analyses routinely contain over 100 effect sizes, making the classic forest plot of limited use. We surveyed 102 meta-analyses in ecology and evolution, finding that only 11% use the classic forest plot. Instead, most used a ‘forest-like plot’, showing point estimates (with 95% confidence intervals; CIs) from a series of subgroups or categories in a meta-regression. We propose a modification of the forest-like plot, which we name the ‘orchard plot’. Orchard plots, in addition to showing overall mean effects and CIs from meta-analyses/regressions, also includes 95% prediction intervals (PIs), and the individual effect sizes scaled by their precision. The PI allows the user and reader to see the range in which an effect size from a future study may be expected to fall. The PI, therefore, provides an intuitive interpretation of any heterogeneity in the data. Supplementing the PI, the inclusion of underlying effect sizes also allows the user to see any influential or outlying effect sizes. We showcase the orchard plot with example datasets from ecology and evolution, using the R package, orchard, including several functions for visualizing meta-analytic data using forest-plot derivatives. We consider the orchard plot as a variant on the classic forest plot, cultivated to the needs of meta-analysts in ecology and evolution. Hopefully, the orchard plot will prove fruitful for visualizing large collections of heterogeneous effect sizes regardless of the field of study.

Macro-level Criminological Perspectives and School Delinquency: A Meta-analysis

2021 ◽  
pp. 0044118X2110223
Author(s):  
Natasha Pusch
Keyword(s):  
Social Cohesion ◽  
Meta Analysis ◽  
School Level ◽  
Effect Sizes ◽  
Macro Level ◽  
Future Research ◽  
Concentrated Disadvantage ◽  
Individual Level ◽  
School Differences ◽  
Academic Implications

School delinquency in public elementary, middle, and high schools has decreased in recent years, but is still a major issue that has negative mental health and academic implications for adolescents. Although research has focused on both individual-level and school-level explanations of school delinquency, it is not yet clear which macro-level criminological perspectives best explains it. Using 656 effect sizes nested within 75 studies and 30 unique datasets, this study addresses two questions using meta-analytic methods: Which macro-level criminological perspectives explain between-school differences in delinquency? Are effect sizes invariant across samples and research design? Results indicate that only concentrated disadvantage and social cohesion are significantly related to school delinquency. With the exception of concentrated disadvantage, effects are homogenous. This suggests that some school-level explanations are useful and future research should not exclude these factors. Practical implications suggest that improving social cohesion in schools may be more effective at preventing violence than target-hardening efforts.

scholarly journals Cognitive Behavioral Therapy combined with physical exercise for depression, anxiety, fatigue and pain in adults with chronic diseases: systematic review and meta-analysis

2018 ◽  
Author(s):  
Paquito Bernard ◽  
Romain Ahmed Jérôme ◽  
Johan Caudroit ◽  
Guillaume Chevance ◽  
Carayol Marion ◽  
...  
Keyword(s):  
Physical Exercise ◽  
Methodological Quality ◽  
Randomized Clinical Trials ◽  
Behavioral Therapy ◽  
Meta Analysis ◽  
Effect Sizes ◽  
Cognitive Behavior ◽  
Cochrane Central Register ◽  
Depression And Anxiety ◽  
Central Register

Objective. The present meta-analysis aimed to determine the overall effect of cognitive behavior therapy combined with physical exercise (CBTEx) interventions on depression, anxiety, fatigue, and pain in adults with chronic illness; to identify the potential moderators of efficacy; and to compare the efficacy of CBTEx versus each condition alone (CBT and physical exercise). Methods. Relevant randomized clinical trials, published before July 2017, were identified through database searches in Pubmed, PsycArticles, CINAHL, SportDiscus and the Cochrane Central Register for Controlled Trials.Results. A total of 30 studies were identified. CBTEx interventions yielded small-to-large effect sizes for depression (SMC = -0.34, 95% CI [-0.53; -0.14]), anxiety (SMC = -0.18, 95% CI [-0.34; -0.03]) and fatigue (SMC = -0.96, 95% CI [-1.43; -0.49]). Moderation analyses revealed that longer intervention was associated with greater effect sizes for depression and anxiety outcomes. Low methodological quality was also associated with increased CBTEx efficacy for depression. When compared directly, CBTEx interventions did not show greater efficacy than CBT alone or physical exercise alone for any of the outcomes. Conclusion. The current literature suggests that CBTEx interventions are effective for decreasing depression, anxiety, and fatigue symptoms, but not pain. However, the findings do not support an additive effect of CBT and exercise on any of the four outcomes compared to each condition alone.

scholarly journals The comparative effectiveness of physical exercise interventions in individuals with chronic non-specific neck pain: protocol for a network meta-analysis

BMJ Open ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. e034846 ◽  
Author(s):  
Rutger MJ de Zoete ◽  
James H McAuley ◽  
Nigel R Armfield ◽  
Michele Sterling
Keyword(s):  
Physical Exercise ◽  
Neck Pain ◽  
Meta Analysis ◽  
Network Effect ◽  
Effect Sizes ◽  
Controlled Trials ◽  
Cochrane Central Register ◽  
Exercise Interventions ◽  
Meta Analyses

IntroductionNeck pain is a global burdensome problem, with a large proportion of neck pain cases becoming chronic. Although physical exercise is a commonly prescribed treatment, the evidence on the effectiveness of isolated exercise interventions remains limited. Traditional pairwise randomised controlled trials (RCTs) and meta-analyses are limited in only comparing two interventions. This protocol describes the design of a network meta-analysis, which enables a comparative investigation of all physical exercise interventions for which RCTs are available. We aim to systematically compare the effectiveness of different types of physical exercise in people with chronic non-specific neck pain.Methods and analysisNine electronic databases (AMED, CINAHL, Cochrane Central Register of Controlled Trials, Embase, MEDLINE, Physiotherapy Evidence Database, PsycINFO, Scopus and SPORTDiscus) were searched for RCTs from inception to 12 March 2019. Titles and abstract firstly, and full-text papers secondly, will be screened by two reviewers. Data will be extracted by two reviewers. The primary outcome measure is effectiveness of the intervention. Methodological quality of included studies will be assessed by two reviewers using the PEDro scale. The overall quality of evidence will be assessed with the Grading of Recommendations Assessment, Development and Evaluation (GRADE) framework, which has been adapted for network meta-analyses. The available evidence will be summarised using a network diagram. A contribution matrix will be presented to allow assessment of direct and indirect evidence. Forest plots will be constructed to visualise effects of all included exercise interventions. Pairwise effect sizes will be calculated by including all evidence available in the network. Effect measures for treatments that have not been compared in a pairwise RCT can be compared indirectly by contrasting effect sizes of comparisons with a common comparator.Ethics and disseminationThis work synthesises evidence from previously published studies and does not require ethics review or approval. A manuscript describing the findings will be submitted for publication in a peer-reviewed scientific journal.PROSPERO registration numberCRD42019126523.

Progression-free survival (PFS) as a surrogate endpoint for overall survival (OS) in advanced/recurrent gastric cancer (AGC) treatment: Individual-patient-data (IPD) based meta-analysis of randomized trials.

2020 ◽  
Vol 38 (15_suppl) ◽  
pp. e16506-e16506
Author(s):  
Koji Oba ◽  
Xavier Paoletti ◽  
Yung-Jue Bang ◽  
Olivier Bouché ◽  
Michel Ducreux ◽  
...  
Keyword(s):  
Treatment Effects ◽  
Randomized Trials ◽  
Meta Analysis ◽  
Surrogate Endpoint ◽  
Threshold Effect ◽  
Patient Data ◽  
Individual Level ◽  
Measurable Disease ◽  
Surrogate Threshold Effect ◽  
The Individual

e16506 Background: In 2013, the GASTRIC (Global Advanced/Adjuvant Stomach Tumor Research through International Collaboration) evaluated the surrogacy of PFS based on IPD of 4,069 patients from 20 randomized trials of AGC. Treatment effects on PFS and on OS were only moderately correlated, and we could not validate PFS as a surrogate endpoint for OS. More recent trials, with refined inclusion criteria and higher standards for evaluating progression, may allow for a more accurate estimate of the correlation. The 2nd round of the GASTRIC sought to re-evaluate the surrogacy of PFS for OS in AGC. Methods: The GASTRIC database was updated with trials published after 2010 which used RECIST (Response Evaluation Criteria in Solid Tumors). Since the proportional hazards assumption was questionable for PFS, we primarily used mean-time ratio as a treatment effect measure, estimated by using the log-logistic model. Using the meta-analytic approach, correlations between PFS and OS at the individual level (Rindiv), and between treatment effects on PFS and on OS at the trial level (Rtrial), were estimated using Spearman’s rank-correlation and estimation-error-adjusted regression, respectively. Surrogate threshold effect was estimated as well. Results: We analyzed 10,912 patient data (1st round 4,069 patients from 20 trials and 2nd round 6,843 patients from 17 trials). Overall, moderate correlations were found at the individual level (Rindiv = 0.75, 95%CI = 0.75 to 0.76 in Hougaard copula) and at the trial level (Rtrial = 0.77, 95%CI = 0.32 to 1.00), respectively. Surrogate threshold effect was equal to 1.29, i.e., observing 29% increase in mean PFS time would predict a significant increase of the OS time. In the subgroup of patients with measurable disease in the 2nd round dataset (4,866 patients), Rtrial was higher and equal to 0.93 (95%CI = 0.70 to 1.00), with STE equal to 1.21. These results were same for 1st and 2nd line trials. Conclusions: The meta-analysis indicates a strong correlation between treatment effects (expressed as log-mean-ratios) on PFS and OS in patients with measurable disease.

scholarly journals Quality of Research Design Moderates Effects of Grade Retention on Achievement: A Meta-Analytic, Multilevel Analysis

2009 ◽  
Vol 31 (4) ◽  
pp. 480-499 ◽  
Author(s):  
Chiharu S. Allen ◽  
Qi Chen ◽  
Victor L. Willson ◽  
Jan N. Hughes
Keyword(s):  
Grade Retention ◽  
Negative Impact ◽  
Meta Analysis ◽  
Median Number ◽  
Effect Sizes ◽  
Future Research ◽  
Negative Effects ◽  
Design Quality ◽  
Individual Level

The present meta-analysis examines the effect of grade retention on academic outcomes and investigates systemic sources of variability in effect sizes. Using multilevel modeling (MLM), the authors investigate characteristics of 207 effect sizes across 22 studies published between 1990 and 2007 at two levels: the study (between) and individual (within) levels. Design quality is a study-level variable. Individual-level variables are median grade retained and median number of years postretention. Quality of design is associated with less negative effects. Years postretention is negatively associated with retention effects, and this effect is stronger for studies using grade comparisons versus age comparisons. The results challenge the widely held view that retention has a negative impact on achievement. Suggestions for future research are discussed.

scholarly journals Effectiveness of Metacognitive Instruction on Students’ Science Learning Achievement: A Meta-Analysis

2021 ◽  
Vol 4 (1) ◽  
pp. 43-54
Author(s):  
Ronilo Antonio ◽  
Maricar Prudente
Keyword(s):  
Student Learning ◽  
Science Teachers ◽  
Science Learning ◽  
Meta Analysis ◽  
Metacognitive Strategies ◽  
Effect Sizes ◽  
Learning Achievement ◽  
Metacognitive Instruction ◽  
Significant Difference ◽  
The Individual

This study examined the effectiveness of metacognitive instruction on science learning achievement using a meta-analytic procedure. Statistical analyses were performed using the software Comprehensive Meta-Analysis (CMA) Version 3 developed by Biostat, Inc. Based on the findings, the overall effect size (ES=0.808) revealed that the use and integration of metacognition in science instruction has a significantly large and positive effect on student learning achievement.  Moderator analysis showed that there was a significant difference in the effect sizes of the individual studies when grouped according to the student’s level of education and the scientific disciplines being studied. However, the obtained positive and large effect sizes suggested that the use and integration of metacognition can be effectively implemented whether students are in the elementary, secondary or tertiary level, be it Biological or Physical Science. Moreover, the metacognitive strategies employed by individual studies are mostly found to be integrated with ICT mainly metacognitive prompts; other practices were student-led metacognitive discussions, concept mapping, metacognitive writing, and metacognitive practice and training. This result establishes the effectiveness of the use and integration of different metacognitive strategies to improve student learning. Thus, science teachers must be equipped with pedagogical knowledge on the implementation and integration of metacognition in classroom instruction.

scholarly journals Claims and statistical inference in animal physical cognition research.

2020 ◽  
Author(s):  
Benjamin George Farrar ◽  
Drew Altschul ◽  
Julia Fischer ◽  
J van der Mescht ◽  
Sarah Placì ◽  
...  
Keyword(s):  
Effect Sizes ◽  
Group Level ◽  
Physical Cognition ◽  
Folk Physics ◽  
Individual Level ◽  
Strength Of Evidence ◽  
Statistical Inferences ◽  
The Individual ◽  
Positive Results ◽  
Statistical Effects

Twenty years after Povinelli’s “Folk Physics for Apes”, this paper assesses how researchers have made claims about animal physical cognition, and the statistical inferences that have been used to support them. These data are relevant in light of the current replicability issues facing science. We surveyed 116 published experiments from 63 papers on physical cognition, which included data from 43 different species of animals. Across these experiments most sample sizes were small, with often fewer than 10 animals being tested. However, in contrast to related psychological disciplines, we found that only 62% of our sample of physical cognition research made positive claims. This suggests that animal physical cognition does not have a strong publication bias towards positive results. Furthermore, we found evidence that researchers are making many true statistical inferences at the individual level, i.e. whether individual animals pass certain tests of physical cognition or not. In contrast, the strength of evidence of statistical effects at the group level was weaker and consistent with many effect sizes being overestimated. Overall, our analysis provides a cautiously optimistic analysis of reliability and bias in animal physical cognition research, however it is nevertheless likely that a non-negligible proportion of results will be difficult to replicate.

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