Effects of aerobic exercise performed in fasted v. fed state on fat and carbohydrate metabolism in adults: a systematic review and meta-analysis

AbstractThis study aimed to verify the effect of aerobic exercise performed in the fasted v. fed states on fat and carbohydrate metabolism in adults. Searches were conducted in March 2015, and updated in July 2016, using PubMed®, Scopus and Cochrane databases (terms: ‘fasting’, ‘exercise’, ‘aerobic exercise’, ‘substrate’, ‘energy metabolism’, ‘fat’, ‘glucose’, ‘insulin’ and ‘adult’) and references from selected studies. Trials that compared the metabolic effects of aerobic exercise (duration ≤120 min) performed in the fasted v. fed states in adults were accepted. The outcomes evaluated were fat oxidation during exercise and the plasma concentrations of insulin, glucose and NEFA before and immediately after exercise; two independent reviewers extracted the data (A. F. V. and L. C.). The results were presented as weighted mean differences between treatments, with 95 % CI. Of 10 405 articles identified, twenty-seven studies – with a total of 273 participants – were included. There was a significant increase in fat oxidation during exercise performed in the fasted, compared with fed, state (−3·08 g; 95 % CI −5·38, −0·79; I2 39·1 %). The weighted mean difference of NEFA concentrations was not significantly different between states (0·00 mmol/l; 95 % CI −0·07, 0·08; I2 72·7 %). However, the weighted mean differences of glucose (0·78 mmol/l; 95 % CI 0·43, 1·14; I2 90·8 %) and insulin concentrations (104·5 pmol/l; 95 % CI 70·8, 138·2; I2 94·5 %) were significantly higher for exercise performed in the fed state. We conclude that aerobic exercise performed in the fasted state induces higher fat oxidation than exercise performed in the fed state.

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Puerarin for OVX-Induced Postmenopausal Osteoporosis in Murine Model: Systematic Review and Meta-Analysis

Current Stem Cell Research & Therapy ◽

10.2174/1574888x14666190703143946 ◽

2020 ◽

Vol 15 (1) ◽

pp. 37-42 ◽

Cited By ~ 1

Author(s):

Xiaobin Yang ◽

Haishi Zheng ◽

Yuan Liu ◽

Dingjun Hao ◽

Baorong He ◽

...

Keyword(s):

Systematic Review ◽

Bone Mass ◽

Postmenopausal Osteoporosis ◽

Murine Model ◽

Weighted Mean Difference ◽

Meta Analysis ◽

Mean Difference ◽

Weighted Mean ◽

Enhancing Effect ◽

Searching Strategy

Aims/Background: Ovariectomy (OVX)-induced murine model is widely used for postmenopausal osteoporosis study. Our current study was conducted to systematically review and essentially quantified the bone mass enhancing effect of puerarin on treating OVX-induced postmenopausal osteoporosis in murine model. Methods: Literatures from PUBMED, EMBASE, and CNKI were involved in our searching strategy by limited the inception date to January 9th, 2019. Moreover, the enhancing effect of puerarin on bone mass compared to OVX-induced rats is evaluated by four independent reviewers. Finally, all the data were extracted, quantified and analyzed via RevMan, besides that in our current review study, we assessed the methodological quality for each involved study. Results: Based on the searching strategy, eight randomization studies were finally included in current meta-analysis and systematic review. According to the data analysis by RevMan, puerarin could improve bone mineral density (BMD); (eight studies, n=203; weighted mean difference, 0.05; 95% CI, 0.03-0.07; P<0.0001) using a random-effects model. There is no significant difference between puerarin and estrogen (seven studies, n=184; weighted mean difference, 0.00; 95% CI, -0.01 to 0.00; P=0.30). Conclusions: Puerarin showed upregulating effects on bone mass in OVX-induced postmenopausal osteoporosis in murine model. More studies of the effect of puerarin on bone density in OVX animals are needed.

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Comparison of clinical efficacy and safety between dexmedetomidine and propofol among patients undergoing gastrointestinal endoscopy: a meta-analysis

Journal of International Medical Research ◽

10.1177/03000605211032786 ◽

2021 ◽

Vol 49 (7) ◽

pp. 030006052110327

Author(s):

Weihua Liu ◽

Wenli Yu ◽

Hongli Yu ◽

Mingwei Sheng

Keyword(s):

Clinical Efficacy ◽

Lower Risk ◽

Gastrointestinal Endoscopy ◽

Weighted Mean Difference ◽

Meta Analysis ◽

Similar Efficacy ◽

Cochrane Library ◽

Efficacy And Safety ◽

Inclusion Criteria ◽

Weighted Mean

Objective To compare the clinical efficacy and safety of dexmedetomidine and propofol in patients who underwent gastrointestinal endoscopy. Methods Relevant studies comparing dexmedetomidine and propofol among patients who underwent gastrointestinal endoscopy were retrieved from databases such as PubMed, Embase, and Cochrane Library. Results Seven relevant studies (dexmedetomidine group, n = 238; propofol group, n = 239) met the inclusion criteria. There were no significant differences in the induction time (weighted mean difference [WMD] = 3.46, 95% confidence interval [CI] = −0.95–7.88, I2 = 99%) and recovery time (WMD = 2.74, 95% CI = −2.72–8.19, I2 = 98%). Subgroup analysis revealed no significant differences in the risks of hypotension (risk ratio [RR] = 0.56, 95% CI = 0.25–1.22) and nausea and vomiting (RR = 1.00, 95% CI = 0.46–2.22) between the drugs, whereas dexmedetomidine carried a lower risk of hypoxia (RR = 0.26, 95% CI = 0.11–0.63) and higher risk of bradycardia (RR = 3.01, 95% CI = 1.38–6.54). Conclusions Dexmedetomidine had similar efficacy and safety profiles as propofol in patients undergoing gastrointestinal endoscopy.

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Effect of Earthworm on Wound Healing: A Systematic Review and Meta-Analysis

Frontiers in Pharmacology ◽

10.3389/fphar.2021.691742 ◽

2021 ◽

Vol 12 ◽

Author(s):

Dong Wang ◽

Zhen Ruan ◽

Rongchao Zhang ◽

Xuejing Wang ◽

Ruihui Wang ◽

...

Keyword(s):

Systematic Review ◽

Wound Healing ◽

Healing Rate ◽

Weighted Mean Difference ◽

Meta Analysis ◽

Healing Process ◽

Risk Of Bias ◽

Mean Difference ◽

Cochrane Library ◽

Weighted Mean

Background: Earthworm, also called dilong (Chinese language), has been used as a traditional Chinese medicine for thousands of years. Recently, some scientists believe that earthworm extracts (EE) can promote wound healing. However, its effectiveness remains controversial. We conducted a meta-analysis to evaluate the effect of EE on wound healing based on the healing rate.Methods: We comprehensively reviewed literature that mentioned EE for wound healing in the PubMed, Cochrane Library, Embase, Web of Science, China National Knowledge Infrastructure (CNKI), VIP database for Chinese Technical Periodicals, and WanFang database that have been published until January 2021. We computed weighted mean difference (WMD) for analysis with RevMan 5.3 software in animal and human models groups. Two researchers independently selected studies and evaluated the risk of bias with the Cochrane Collaboration tool. The quality of the evidence was assessed with the Cochrane risk of bias tool. This study is registered on PROSPERO (CRD42020168400).Results: From 2,486 articles, we selected 16 studies for analysis. EE treatment was associated with improvements in wound healing performance based on wound healing rate (mouse model: weighted mean difference (WMD) = 3.55, 95% confidence interval (CI): 2.34–4.77, p < 0.00001; rat model: WMD = 17.29, 95% CI: 5.75–28.82, p = 0.003; rabbit model: WMD = 19.29, 95% CI: 9.95–28.64, p < 0.0001). Clinical studies also confirmed that EE could reduce healing time in hospital (WMD = −8.94, 95% CI: −17.75 to −0.14, p = 0.05).Conclusion: The results of this meta-analysis demonstrated the efficacy of EE on wound healing process. As a corollary, EE can be a useful natural product for wound healing drug development.Systematic Review Registration:https://www.crd.york.ac.uk/PROSPERO/display_record.php?RecordID=168400, identifier CRD42020168400.

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Impact of extended lymphadenectomy on morbidity, mortality, recurrence and 5-year survival after gastrectomy for cancer: meta-analysis of randomized clinical trials

Acta Cirurgica Brasileira ◽

10.1590/s0102-86502008000600009 ◽

2008 ◽

Vol 23 (6) ◽

pp. 520-530 ◽

Cited By ~ 19

Author(s):

Suzana Angélica Silva Lustosa ◽

Humberto Saconato ◽

Álvaro Nagib Atallah ◽

Gaspar de Jesus Lopes Filho ◽

Delcio Matos

Keyword(s):

Hospital Mortality ◽

Recurrent Disease ◽

Weighted Mean Difference ◽

Meta Analysis ◽

Mean Difference ◽

Weighted Mean ◽

D3 Lymphadenectomy ◽

Statistical Heterogeneity ◽

Significant Difference ◽

Significant Statistical Heterogeneity

PURPOSE: To compare morbidity, mortality, recurrence and 5-year survival between D1 and D2 or D3 for treatment of gastric cancer. METHODS: Systematic review and meta-analysis of RCTs. Metaview in RevMan 4.2.8 for analysis; statistical heterogeneity by Cochran's Q test (P<0.1) and I² test (P>50%). Estimates of effect were calculated using random effects model. RESULTS: D2 or D3 was associated with higher in-hospital mortality, with RR = 2.13, p=0.0004, 95% CI, 1.40 to 3.25, I²=0%, P=0.63; overall morbidity showed higher incidence in D2 or D3, RR = 1.98, p<0.00001, 95% CI, 1.64 to 2.38, I² = 33.9%, P=0.20; operating time showed longer duration in D2 or D3, weighted mean difference of 1.05, p<0.00001, 95% CI, 0.71 to 1.38, I² = 78.7%, P=0.03, with significant statistical heterogeneity; reoperation showed higher rate in D2 or D3, with RR = 2.33, p<0.0001, 95% CI, 1.58 to 3.44, I² = 0%, P=0.99; hospital stay showed longer duration in the D2 or D3, with weighted mean difference of 4.72, p<0.00001, 95% CI, 3.80 to 5.65, I² = 89.9%, P<0.00001; recurrence was analyzed showed lower rate in D2 or D3, with RR = 0.89, p=0.02, 95% CI, 0.80 to 0.98, I² = 71.0%, P = 0.03, with significant statistical heterogeneity; mortality with recurrent disease showed higher incidence in D1, with RR = 0.88, p=0.04, 95% CI, 0.78 to 0.99, I² =51.8%, P=0.10; 5-year survival showed no significant difference, with RR = 1.05, p=0.40, 95% CI, 0.93 to 1.19, I² = 49.1% and P=0.12. CONCLUSIONS: D2 or D3 lymphadenectomy procedure is followed by higher overall morbidity and higher in-hospital mortality; D2 or D3 lymphadenectomy shows lower incidence of recurrence and lower mortality with recurrent disease, when analysed altogether with statistical heterogeneity; D2 or D3 lymphadenectomy has no significant impact on 5-year survival.

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Melatonin and Cardioprotection in Humans: A Systematic Review and Meta-Analysis of Randomized Controlled Trials

Frontiers in Cardiovascular Medicine ◽

10.3389/fcvm.2021.635083 ◽

2021 ◽

Vol 8 ◽

Author(s):

Alberto Domínguez-Rodríguez ◽

Pedro Abreu-González ◽

Néstor Báez-Ferrer ◽

Russel J. Reiter ◽

Pablo Avanzas ◽

...

Keyword(s):

Systematic Review ◽

Randomized Controlled Trials ◽

Meta Analysis ◽

Mean Difference ◽

Left Ventricular Ejection ◽

Favorable Effect ◽

Controlled Trials ◽

Weighted Mean ◽

Randomized Controlled ◽

Mean Differences

Myocardial ischemia/reperfusion (IR) injury represents a critical problem associated with interventional approaches for coronary reperfusion. Pharmacological cardioprotective interventions are advocated to ameliorate IR injury. Melatonin is an anti-inflammatory and antioxidant agent with a wide range of therapeutic properties that may contribute to its cardioprotective effects. No systematic review or meta-analysis has compared melatonin vs. placebo as a cardioprotective agent in humans. The present study, based on a systematic review and meta-analysis, was carried out to assess melatonin's efficacy as a cardioprotective treatment. We performed a systematic review of the available literature. Randomized controlled trials (RCTs) were identified and information was extracted using predefined data extraction forms. The primary outcomes were (a) left ventricular ejection fraction (LVEF) and (b) blood troponin levels in patients who underwent myocardial revascularization and were randomized to melatonin or placebo. The inverse-variance random-effects method was used to pool the estimates. Heterogeneity and publication bias were assessed. Weighted mean differences or standardized mean differences were calculated. A total of 283 records were screened and seven RCTs met all the inclusion criteria. After the pooled analysis, the results on LVEF were consistent across all studies, and a significant heterogeneity was found in the results on troponin levels. The melatonin-treated patients had on average higher LVEF than the placebo-treated individuals with a weighted mean difference = 3.1% (95% CI 0.6–5.5, p = 0.01). Five works compared the levels of troponin after melatonin or placebo treatment. The melatonin-treated patients had lower levels of troponin with a standardized mean difference = −1.76 (95% CI −2.85 to −0.67, p = 0.002). The findings of this meta-analysis revealed that melatonin administration in humans as a cardioprotective agent attenuated heart dysfunction with a favorable effect on the LVEF.

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Diagnostic Value of sST2 in Cardiovascular Diseases: A Systematic Review and Meta-Analysis

Frontiers in Cardiovascular Medicine ◽

10.3389/fcvm.2021.697837 ◽

2021 ◽

Vol 8 ◽

Author(s):

Tianyi Zhang ◽

Chengyang Xu ◽

Rui Zhao ◽

Zhipeng Cao

Keyword(s):

Myocardial Infarction ◽

Cardiac Troponin ◽

Weighted Mean Difference ◽

Meta Analysis ◽

Diagnostic Value ◽

Mean Difference ◽

Diagnostic Biomarker ◽

Healthy Individuals ◽

Weighted Mean ◽

Standard Mean Difference

Biomarkers such as B-type natriuretic peptide (BNP), N-terminal pro-BNP (NT-proBNP), cardiac troponin (cTn), and CK-MB contribute significantly to the diagnosis of cardiovascular disease (CVD). Recent studies have demonstrated that suppression of tumorigenicity 2 (ST2) is associated with CVD, but a meta-analysis of ST2 levels in different CVDs has yet to be conducted. Therefore, the present study aimed to investigate soluble ST2 (sST2) levels in patients with ischemic heart disease (IHD), myocardial infarction (MI), and heart failure (HF). A total of 1,425 studies were searched across four databases, of which 16 studies were included in the meta-analysis. The Newcastle–Ottawa Quality Assessment Scale (NOS) values of all 16 studies were ≥7. The meta-analysis results indicated that the sST2 level was not correlated with IHD (standard mean difference [SMD] = 0.58, 95% confidence interval [95% CI] = 0.00 to 1.16, p = 0.05) or MI (weighted mean difference [WMD] = 0.17, 95% CI = −0.22 to 0.55, p = 0.40) but was significantly associated with HF (WMD = 0.21, 95% CI = 0.04 to 0.38, p = 0.02; I2 = 99%, p < 0.00001). sST2 levels did not differ significantly between patients with IHD or MI and healthy individuals; however, we believe that ST2 could be used as an auxiliary diagnostic biomarker of HF.

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Meta-analysis of immunogenicity and safety of human rabies vaccination under Zagreb and Essen regimens

Journal of Comparative Effectiveness Research ◽

10.2217/cer-2019-0202 ◽

2020 ◽

Author(s):

Ting Li ◽

Xin Wang ◽

Hongbin Cheng

Keyword(s):

Adverse Events ◽

Safety Profile ◽

Meta Analysis ◽

Neutralizing Antibody ◽

Human Rabies ◽

Antibody Concentration ◽

Weighted Mean ◽

Mean Differences ◽

Risk Ratios ◽

Rabies Vaccination

Aim: To assess the immunogenicity and safety of rabies vaccination under the Zagreb and Essen regimens by performing a meta-analysis. Methods: Electronic databases were searched for eligible studies. Risk ratios and weighted mean differences with 95% CIs were used to calculate estimates. Results: A total of 18 studies were included. Rabies virus neutralizing antibody concentration was comparable between the two regimens at D7 and 14. No significant differences were observed in seroconversion rates from D14 and 42. Incidence of fever was higher in Zagreb group (risk ratio: 1.55 [1.37–1.76]); but no significant differences were present for other common adverse events. Conclusion: Rabies vaccination under the Zagreb regimen was noninferior to the Essen regimen in immunogenicity and had an acceptable safety profile.

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A dose-response and meta-analysis of phytosterols consumption on liver enzymes

Nutrition & Food Science ◽

10.1108/nfs-06-2019-0182 ◽

2019 ◽

Vol 50 (3) ◽

pp. 579-600

Author(s):

Somayeh Tajik ◽

Kevan Jacobson ◽

Sam Talaei ◽

Hamed Kord-Varkaneh ◽

Zeinab Noormohammadi ◽

...

Keyword(s):

Liver Function ◽

Design Methodology ◽

Liver Enzymes ◽

Weighted Mean Difference ◽

Meta Analysis ◽

Serum Biochemistry ◽

Effect Sizes ◽

Random Effects Model ◽

Weighted Mean ◽

Content Type

Purpose The results of human studies evaluating the efficacy of plant Phytosterols on liver function were inconsistent. Therefore, the purpose of this paper is to eliminate these controversies about the Phytosterols consumption on liver serum biochemistry in adult subjects. Design/methodology/approach The literatures systematically searched throughout PubMed and Scopus databases up to June 2018; it was conducted by using related keywords. Estimates of effect sizes were expressed based on weighted mean difference (WMD) and 95% CI from the random-effects model (erSimonian and Laird method). Heterogeneity across studies was assessed by using I2 index. Eighteen studies reported the effects of Phytosterols (PS) supplementation on liver serum biochemistry. Findings The current meta-analysis did not show a significant effect on ALT (MD: 0.165 U/L, 95% CI: −1.25, 1.58, p = 0.820), AST (MD: −0.375 IU/Liter, 95% CI: −1.362, 0.612, p = 0.457), ALP (MD: 0.804 cm, 95% CI: −1.757, 3.366, p = 0.538), GGT (MD: 0.431 U/L, 95% CI: −1.803, 2.665, p = 0.706) and LDH (MD: 0.619 U/L, 95% CI: −4.040, 5.277, p = 0.795) following PS consumption. Originality/value The authors found that no protective or toxic effects occur after the consumption of Phytosterols on liver enzymes including ALT, AST, ALP, LDH and GGT.

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Protein Intake Greater than the RDA Differentially Influences Whole-Body Lean Mass Responses to Purposeful Catabolic and Anabolic Stressors: A Systematic Review and Meta-analysis

Advances in Nutrition ◽

10.1093/advances/nmz106 ◽

2019 ◽

Vol 11 (3) ◽

pp. 548-558 ◽

Cited By ~ 6

Author(s):

Joshua L Hudson ◽

Yu Wang ◽

Robert E Bergia III ◽

Wayne W Campbell

Keyword(s):

Systematic Review ◽

Lean Mass ◽

Weighted Mean Difference ◽

Meta Analysis ◽

Energy Restriction ◽

Whole Body ◽

Weighted Mean ◽

Randomized Controlled ◽

Body Lean Mass ◽

Apparently Healthy

ABSTRACT Under stressful conditions such as energy restriction (ER) and physical activity, the RDA for protein of 0.8 g · kg−1 · d−1 may no longer be an appropriate recommendation. Under catabolic or anabolic conditions, higher protein intakes are proposed to attenuate the loss or increase the gain of whole-body lean mass, respectively. No known published meta-analysis compares protein intakes greater than the RDA with intakes at the RDA. Therefore, we conducted a systematic review and meta-analysis to assess the effects of protein intakes greater than the RDA, compared with at the RDA, on changes in whole-body lean mass. Three researchers independently screened 1520 articles published through August 2018 using the PubMed, Scopus, CINAHL, and Cochrane databases, with additional articles identified in published systematic review articles. Randomized, controlled, parallel studies ≥6 wk long with apparently healthy adults (≥19 y) were eligible for inclusion. Data from 18 studies resulting in 22 comparisons of lean mass changes were included in the final overall analysis. Among all comparisons, protein intakes greater than the RDA benefitted changes in lean mass relative to consuming the RDA [weighted mean difference (95% CI): 0.32 (0.01, 0.64) kg, n = 22 comparisons]. In the subgroup analyses, protein intakes greater than the RDA attenuated lean mass loss after ER [0.36 (0.06, 0.67) kg, n = 14], increased lean mass after resistance training (RT) [0.77 (0.23, 1.31) kg, n = 3], but did not differentially affect changes in lean mass [0.08 (−0.59, 0.75) kg, n = 7] under nonstressed conditions (no ER + no RT). Protein intakes greater than the RDA beneficially influenced changes in lean mass when adults were purposefully stressed by the catabolic stressor of dietary ER with and without the anabolic stressor of RT. The RDA for protein is adequate to support lean mass in adults during nonstressed states. This review was registered at www.crd.york.ac.uk/prospero as CRD 42018106532.

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Comparison of total and activity energy expenditure estimates from physical activity questionnaires and doubly labelled water: a systematic review and meta-analysis

British Journal Of Nutrition ◽

10.1017/s0007114520003049 ◽

2020 ◽

pp. 1-15 ◽

Cited By ~ 1

Author(s):

Mohammad Sharifzadeh ◽

Minoo Bagheri ◽

John R. Speakman ◽

Kurosh Djafarian

Keyword(s):

Physical Activity ◽

Energy Expenditure ◽

Weighted Mean Difference ◽

Meta Analysis ◽

Mean Difference ◽

Weighted Mean ◽

Doubly Labelled Water ◽

Significant Difference ◽

Activity Questionnaires ◽

Activity Energy

Abstract Physical activity questionnaires (PAQ) could be suitable tools in free-living people for measures of physical activity, total and activity energy expenditure (TEE and AEE). This meta-analysis was performed to determine valid PAQ for estimating TEE and AEE using doubly labelled water (DLW). We identified data from relevant studies by searching Google Scholar, PubMed and Scopus databases. This revealed thirty-eight studies that had validated PAQ with DLW and reported the mean differences between PAQ and DLW measures of TEE (TEEDLW − TEEPAQ) and AEE (AEEDLW − AEEPAQ). We assessed seventy-eight PAQ consisting of fifty-nine PAQ that assessed TEE and thirty-five PAQ that examined AEE. There was no significant difference between TEEPAQ and TEEDLW with a weighted mean difference of –243·3 and a range of –841·4 to 354·6 kJ/d, and a significant weighted mean difference of AEEDLW – AEE PAQ 414·6 and a range of 78·7–750·5. To determine whether any PAQ was a valid tool for estimating TEE and AEE, we carried out a subgroup analysis by type of PAQ. Only Active-Q, administered in two seasons, and 3-d PA diaries were correlated with TEE by DLW at the population level; however, these two PAQ did not demonstrate an acceptable limit of agreement at individual level. For AEE, no PAQ was correlated with DLW either at the population or at the individual levels. Active-Q and 3-d PA diaries were identified as the only valid PAQ for TEE estimation. Further well-designed studies are needed to verify this result and identify additional valid PAQ.

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