scholarly journals Effects of linear and daily undulating periodized resistance training programs on measures of muscle hypertrophy: a systematic review and meta-analysis

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3695 ◽  
Author(s):  
Jozo Grgic ◽  
Pavle Mikulic ◽  
Hrvoje Podnar ◽  
Zeljko Pedisic
Keyword(s):  
Systematic Review ◽  
Resistance Training ◽  
Muscle Hypertrophy ◽  
Web Of Science ◽  
Training Programs ◽  
Meta Analysis ◽  
Future Studies ◽  
The Difference ◽  
Intervention Trials ◽  
Theses And Dissertations

BackgroundPeriodization is an important component of resistance training programs. It is meant to improve adherence to the training regimen, allow for constant progression, help in avoiding plateaus, and reduce occurrence and severity of injuries. Previous findings regarding the effects of different periodization models on measures of muscle hypertrophy are equivocal. To provide a more in-depth look at the topic, we undertook a systematic review of the literature and a meta-analysis of intervention trials comparing the effects of linear periodization (LP) and daily undulating periodization (DUP) resistance training programs on muscle hypertrophy.Materials and MethodsA comprehensive literature search was conducted through PubMed/MEDLINE, Scopus, Web of Science, SPORTDiscus, Networked Digital Library of Theses and Dissertations (NDLTD) and Open Access Theses and Dissertations (OATD).ResultsThe pooled standardized mean difference (Cohen’s d) from 13 eligible studies for the difference between the periodization models on muscle hypertrophy was −0.02 (95% confidence interval [−0.25, 0.21],p = 0.848).ConclusionsThe meta-analysis comparing LP and DUP indicated that the effects of the two periodization models on muscle hypertrophy are likely to be similar. However, more research is needed in this area, particularly among trained individuals and clinical populations. Future studies may benefit from using instruments that are more sensitive for detecting changes in muscle mass, such as ultrasound or magnetic resonance imaging.

Muscle hypertrophy and strength gains after resistance training with different volume matched loads: a systematic review and meta-analysis.

2022 ◽  
Author(s):  
Leonardo Henrique Fernandes Carvalho ◽  
Roberto Moriggi Junior ◽  
Júlia Barreira ◽  
Brad Jon Schoenfeld ◽  
John Orazem ◽  
...  
Keyword(s):  
Systematic Review ◽  
Resistance Training ◽  
Muscle Hypertrophy ◽  
Meta Analysis ◽  
Dynamic Strength ◽  
Pooled Analysis ◽  
High Load ◽  
Mean Difference ◽  
Volume Load ◽  
Standardized Mean Difference

The purpose of this paper was to conduct a systematic review and meta-analysis of studies that compared muscle hypertrophy and strength gains between resistance training protocols employing very low (VLL<30% of 1RM or >35 RM), low (LL30%-59% of 1RM, or 16–35 RM), moderate (ML60%-79% of 1RM, or 8 -15RM) and high load (HL≥80% of 1RM, or ≤7 RM) with matched volume loads (sets x reps x weight). A pooled analysis of the standardized mean difference for 1RM strength outcomes across the studies showed a benefit favoring HL vs. LL and vs. ML; and favoring ML vs. LL. Results from LL and VLL indicated little difference. A pooled analysis of the standardized mean difference for hypertrophy outcomes across all studies showed no differences between the training loads. Our findings indicate that, when volume load is equated between conditions, the highest loads induce superior dynamic strength gains. Alternatively, hypertrophic adaptations are similar irrespective of the magnitude of load. NOVELTY BULLETS: • Training with higher loads elicits greater gains in 1RM muscle strength when compared to lower loads, even when volume load is equated between conditions. • Muscle hypertrophy is similar irrespective of the magnitude of load, even when volume load is equated between conditions.

scholarly journals Effect of Chronic Resistance Training on Circulating Irisin: Systematic Review and Meta-Analysis of Randomized Controlled Trials

2021 ◽  
Vol 18 (5) ◽  
pp. 2476
Author(s):  
Pedro L. Cosio ◽  
Manuel Crespo-Posadas ◽  
Álvaro Velarde-Sotres ◽  
Mireia Pelaez
Keyword(s):  
Systematic Review ◽  
Older Adults ◽  
Resistance Training ◽  
Randomized Controlled Trials ◽  
Training Programs ◽  
Meta Analysis ◽  
Controlled Trials ◽  
Resistance Training Program ◽  
Randomized Controlled ◽  
Subgroup Analyses

Irisin seems to play an important role in several chronic diseases, however, the interactions between chronic training and irisin are still unclear. The purpose of this systematic review and meta-analysis was to examine the effect of chronic resistance training on circulating irisin in adults. Literature search was conducted in PubMed, Web of Science and EBSCOhost (Academic Search Complete) until December 2020. Randomized controlled trials researching irisin levels after a resistance training program for at least 8 weeks among an adult population were eligible. Other inclusion criteria comprised recruiting a control group and reporting circulating irisin through ELISA kits. Cohen’s d effect size and subgroup analyses (95% confidence level) were calculated using a random effects analysis model. Data of the seven included studies comprising 282 individuals showed an increasing and non-significant tendency after a resistance training program (d = 0.58, 95% CI: −0.25 to 1.40, p = 0.17). Subgroup analyses showed significant increases for the older adults group (p < 0.001) and when training is demanding and progressive in terms of intensity (p = 0.03). Data suggest that resistance training programs seem to increase circulating irisin, especially in older adults and in demanding and progressive training programs. However, more studies should be conducted using robust measurement methods, such as mass spectrometry, to better understand the interaction between chronic resistance exercise and irisin.

scholarly journals Gender differences in the intention to get vaccinated against COVID-19: a systematic review and meta-analysis

2022 ◽  
Author(s):  
Stephanie Zintel ◽  
Charlotte Flock ◽  
Anna Lisa Arbogast ◽  
Alice Forster ◽  
Christian von Wagner ◽  
...  
Keyword(s):  
Systematic Review ◽  
Health Care ◽  
Gender Differences ◽  
Health Care Workers ◽  
Web Of Science ◽  
Meta Analysis ◽  
Men And Women ◽  
Vaccination Rates ◽  
Care Workers ◽  
The Difference

Abstract Aim We conducted a systematic review and meta-analysis to analyse gender differences in COVID-19 vaccination intentions. Subject and methods PubMed, Web of Science and PsycInfo were searched (November 2020 to January 2021) for studies reporting absolute frequencies of COVID-19 vaccination intentions by gender. Averaged odds ratios comparing vaccination intentions among men and women were computed. Descriptive analyses of the studies were reported. Results Sixty studies were included in the review and data from 46 studies (n = 141,550) were available for meta-analysis. A majority (58%) of papers reported men to have higher intentions to get vaccinated against COVID-19. Meta-analytic calculations showed that significantly fewer women stated that they would get vaccinated than men, OR 1.41 (95% CI 1.28 to 1.55). This effect was evident in several countries, and the difference was bigger in samples of health care workers than in unspecified general population samples. Conclusion This systematic review and meta-analysis found lower vaccination intentions among women than men. This difference is discussed in the light of recent data on actual vaccination rates in different countries.

scholarly journals Global Prevalence of Posttraumatic Stress Disorder (PTSD) during and after Coronavirus Pandemic: A Study Protocol for a Systematic Review and Meta-Analysis

2020 ◽  
Author(s):  
Maryam Salmanian ◽  
Mona Salehi ◽  
Zahra Hooshyari
Keyword(s):  
Systematic Review ◽  
Web Of Science ◽  
Stress Disorder ◽  
Meta Analysis ◽  
Random Effect ◽  
Future Studies ◽  
Global Prevalence ◽  
Care Workers ◽  
Prevalence Estimates ◽  
Random Effect Models

Objective: Studies conducted on severe acute respiratory syndrome (SARS), Middle East respiratory syndrome (MERS), and COVID-19 epidemics have shown PTSD can occur during and after infectious diseases. However, more studies are needed to explore PTSD during and after COVID-19 outbreak. The objective of this study is to provide a protocol of systematic review and meta-analysis to report the global prevalence of PTSD during and after coronavirus pandemics among general population, health care workers, survivors, or patients with coronaviruses. Method: We include all studies that reported the prevalence of PTSD during and after coronavirus pandemics and search databases, including Web of Science, PubMed, Scopus, Embase, and Google Scholar from first of November 2002 to May 18, 2020. Two authors independently use relevant checklists to quality assessment of the included studies and extract data. We use the graphical methods and fixed or random effect models to aggregate prevalence estimates. Also, we will assess heterogeneity between the included studies using the I2 heterogeneity statistic and use subgroup and sensitivity analysis to assess the sources of heterogeneity. Discussion: We infer that PTSD is a common experience during and after infectious disease pandemics, especially COVID-19. The findings of this study can be used by health policymakers and other stakeholders and will provide a path to future studies.

scholarly journals Muscle hypertrophy and ladder‐based resistance training for rodents: A systematic review and meta‐analysis

2020 ◽  
Vol 8 (17) ◽  
Author(s):  
Ítalo Lourenço ◽  
Walter Krause Neto ◽  
Laura Santos Portella Amorim ◽  
Vagner Moraes Munhoz Ortiz ◽  
Vitor Lopes Geraldo ◽  
...  
Keyword(s):  
Systematic Review ◽  
Resistance Training ◽  
Muscle Hypertrophy ◽  
Meta Analysis
Sign in / Sign up

Export Citation Format

Share Document