Effects of Beetroot Supplementation on Recovery After Exercise-Induced Muscle Damage: A Systematic Review

2021 ◽  
pp. 194173812110364
Author(s):  
Daniel Rojano-Ortega ◽  
José Peña Amaro ◽  
Antonio J. Berral-Aguilar ◽  
Francisco J. Berral-de la Rosa

Context: Beetroots have antioxidant and anti-inflammatory properties, which may help attenuate inflammation and oxidative stress, enhancing recovery from exercise-induced muscle damage (EIMD). Objective: To evaluate the effects of beetroot supplementation on oxidative stress, inflammation, and recovery after EIMD. Data Sources: SPORTDiscus, PubMed, Web of Science, and Scopus databases were searched, and hand-searching was performed by looking to relevant studies that were cited in other studies. Study Selection: For a study to be included in this review, the following inclusion criteria had to be met: (1) research conducted with human participants, (2) original articles in peer-reviewed publications, (3) original studies that had investigated beetroot supplementation intervention on muscle damage and recovery, (4) research conducted with 1 control/placebo group, and (5) articles published from inception to October 2020. Study Design: Systematic review using the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) statement. Level of Evidence: Level 3. Data Extraction: Two of the 4 authors independently extracted data and assessed the methodological quality of the articles with the PEDro scale. All discrepancies were resolved through a consensus meeting. Results: A total of 9 studies were included in this review. The methodological quality of the included studies ranged from moderate to high. Most of the studies found a better recovery of functional variables and muscle soreness, but improvements in markers of muscle damage, inflammation, and oxidative stress were not reported. Conclusion: The existing evidence suggests that a short-term beetroot supplementation has the potential to accelerate recovery of functional measures and muscle soreness, but further research is needed to clarify if a longer supplementation period (with some days before exercise and some days after) could also promote recovery of markers of muscle damage, inflammation, and oxidative stress.

2019 ◽  
Vol 77 (9) ◽  
pp. 630-645 ◽  
Author(s):  
Taylor K Bloedon ◽  
Rock E Braithwaite ◽  
Imogene A Carson ◽  
Dorothy Klimis-Zacas ◽  
Robert A Lehnhard

Abstract Context Supplementing with fruits high in anthocyanins to reduce exercise-induced oxidative stress and inflammation has produced mixed results. Objective This systematic review and meta-analysis aims to discuss the impact of whole fruits high in anthocyanins, including processing methods and the type and amount of fruit, on inflammation and oxidative stress. Data Sources PICOS reporting guidelines and a customized coding scheme were used to search 5 databases (SPORTDiscus, Science Direct, Web of Science [BIOSIS], Medline [Pubmed], and the Cochrane Collaboration) with additional cross-referencing selection. Data Extraction A random-effects meta-analysis was used to measure effects of the fruit supplements with 3 statistics; the QTotal value based on a χ2 distribution, τ2 value, and I2 value were used to determine homogeneity of variances on 22 studies (out of 807). Outliers were identified using a relative residual value. Results A small significant negative summary effect across the sum of all inflammatory marker outcomes (P < 0.001) and a moderate negative effect for the sum of all oxidative stress marker outcomes (P = 0.036) were found. Moderator analyses did not reveal significant (P > 0.05) differences between subgrouping variables. Conclusions Results indicate that consumption of whole fruit high in anthocyanins can be beneficial for reducing inflammation and oxidative stress.


Author(s):  
Kenji Doma ◽  
Baily Devantier-Thomas ◽  
Daniel Gahreman ◽  
Jonathan Connor

Abstract. This systematic review and meta-analysis examined the effects of selected root plants (curcumin, ginseng, ginger and garlic) on markers of muscle damage and muscular performance measures following muscle-damaging protocols. We included 25 studies (parallel and crossover design) with 353 participants and used the PEDro scale to appraise each study. Forest plots were generated to report on standardised mean differences (SMD) and p-values at 24 and 48 hours following the muscle-damaging protocols. The meta-analysis showed that the supplemental (SUPP) condition showed significantly lower levels of indirect muscle damage markers (creatine kinase, lactate dehydrogenase and myoglobin) and muscle soreness at 24 hours and 48 hours (p < 0.01) than the placebo (PLA) condition. The inflammatory markers were significantly lower for the SUPP condition than the PLA condition at 24 hours (p = 0.02), although no differences were identified at 48 hours (p = 0.40). There were no significant differences in muscular performance measures between the SUPP and PLA conditions at 24 hours and 48 hours (p > 0.05) post-exercise. According to our qualitative data, a number of studies reported a reduction in oxidative stress (e.g., malondialdehyde, superoxide dismutase) with a concomitant upregulation of anti-oxidant status, although other studies showed no effects. Accordingly, selected root plants minimised the level of several biomarkers of muscle damage, inflammation and muscle soreness during periods of exercise-induced muscle damage. However, the benefits of these supplements in ameliorating oxidative stress, increasing anti-oxidant status and accelerating recovery of muscular performance appears equivocal, warranting further research in these outcome measures.


2020 ◽  
pp. 026921552096669 ◽  
Author(s):  
Robson Massi Bastos ◽  
Jorge Geraldo de Carvalho Júnior ◽  
Suellen Aline Martinez da Silva ◽  
Shirley Ferreira Campos ◽  
Matheus Vieira Rosa ◽  
...  

Objective: To summarize the effects of surgical treatment compared to conservative treatment in femoroacetabular impingement syndrome in the short, medium, and long term. Study Design: Systematic review Methods: The following databases were searched on 14/09/2020: MEDLINE, EMBASE, CENTRAL, Web of Science, and PEDro. There were no date or language limits. The methodological quality assessment was performed using the PEDro scale and the quality of the evidence followed the GRADE recommendation. The outcomes pain, disability, and adverse effects were extracted. Results: Of 6264 initial studies, three met the full-text inclusion criteria. All studies were of good methodological quality. Follow up ranged from six months to two years, with 650 participants in total. The meta-analyses found no difference in disability between surgical versus conservative treatment, with a mean difference (MD) between groups of 3.91 points (95% CI –2.19 to 10.01) at six months, MD of 5.53 points (95% CI –3.11 to 14.16) at 12 months and 3.8 points (95% CI –6.0 to 13.6) at 24 months. The quality of the evidence (GRADE) varied from moderate to low across all comparisons. Conclusion: There is moderate-quality evidence that surgical treatment is not superior to conservative treatment for femoroacetabular impingement syndrome in the short term, and there is low-quality evidence that it is not superior in the medium term. Level of evidence: Therapy, level 1a. Registration number: PROSPERO CRD42019134118


Author(s):  
Liam D. Corr ◽  
Adam Field ◽  
Deborah Pufal ◽  
Tom Clifford ◽  
Liam D. Harper ◽  
...  

Abstract Exercise-induced muscle damage (EIMD) is associated with oxidative stress and inflammation, muscle soreness, and reductions in muscle function. Cocoa flavanols (CF) are (poly)phenols with antioxidant and anti-inflammatory effects and thus may attenuate symptoms of EIMD. The purpose of this narrative review was to collate and evaluate the current literature investigating the effect of CF supplementation on markers of exercise-induced oxidative stress and inflammation, as well as changes in muscle function, perceived soreness, and exercise performance. Acute and sub-chronic intake of CF reduces oxidative stress resulting from exercise. Evidence for the effect of CF on exercise-induced inflammation is lacking and the impact on muscle function, perceived soreness and exercise performance is inconsistent across studies. Supplementation of CF may reduce exercise-induced oxidative stress, with potential for delaying fatigue, but more evidence is required for any definitive conclusions on the impact of CF on markers of EIMD. Graphic abstract


BMJ Open ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. e025054 ◽  
Author(s):  
Nina Deliu ◽  
Francesco Cottone ◽  
Gary S Collins ◽  
Amélie Anota ◽  
Fabio Efficace

IntroductionWhile there is mounting evidence of the independent prognostic value of patient-reported outcomes (PROs) for overall survival (OS) in patients with cancer, it is known that the conduct of these studies may hold a number of methodological challenges. The aim of this systematic review is to evaluate the quality of published studies in this research area, in order to identify methodological and statistical issues deserving special attention and to also possibly provide evidence-based recommendations.Methods and analysisAn electronic search strategy will be performed in PubMed to identify studies developing or validating a prognostic model which includes PROs as predictors. Two reviewers will independently be involved in data collection using a predefined and standardised data extraction form including information related to study characteristics, PROs measures used and multivariable prognostic models. Studies selection will be reported following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, with data extraction form using fields from the Critical Appraisal and Data Extraction for Systematic Reviews of Prediction Modelling Studies (CHARMS) checklist for multivariable models. Methodological quality assessment will also be performed and will be based on prespecified domains of the CHARMS checklist. As a substantial heterogeneity of included studies is expected, a narrative evidence synthesis will also be provided.Ethics and disseminationGiven that this systematic review will use only published data, ethical permissions will not be required. Findings from this review will be published in peer-reviewed scientific journals and presented at major international conferences. We anticipate that this review will contribute to identify key areas of improvement for conducting and reporting prognostic factor analyses with PROs in oncology and will lay the groundwork for developing future evidence-based recommendations in this area of research.Prospero registration numberCRD42018099160.


Nutrients ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 2988
Author(s):  
Lee Rickards ◽  
Anthony Lynn ◽  
Deborah Harrop ◽  
Margo E. Baker ◽  
Mark Russell ◽  
...  

Objectives. To determine the effects of consuming polyphenol-rich foods, juices and concentrates on recovery from exercise-induced muscle damage (EIMD). Method. Eligibility criteria. Randomised and quasi-randomised placebo-controlled trials with a parallel or cross-over design evaluating the effects of consuming polyphenol-rich foods, juices and concentrates on recovery from EIMD in humans. Eligible studies included at least one of the primary outcome measures: maximal isometric voluntary contraction; MIVC, delayed onset muscle soreness; DOMS, or countermovement jump; CMJ. Information sources. AMED, Cochrane Central Register of Controlled Trials, International Clinical Trials Registry Platform, PUBMED, SCOPUS (Elsevier), SPORTDiscus (EBSCO), and the UK Clinical Trials Gateway were searched from inception to September 2020. Risk of bias and quality of evidence. Risk of bias was assessed using Cochrane Risk of Bias 2 tool. Quality of the evidence was assessed using the Grading of Recommendations, Assessment, Development and Evaluation framework. Synthesis of results. Random effects models were used to determine the effect of polyphenol supplementation on recovery from EIMD. Data are presented as standardised mean differences (SMD) with 95% confidence intervals (CI). Results. Included studies. Twenty-five studies were included; 15 had a parallel, and 10 had a cross-over design. A total of 527 participants (male: n = 425; female: n = 102) were included in the meta-analysis. Synthesis of results. Consumption of polyphenol-rich foods, juices and concentrates accelerated recovery of MIVC immediately post-exercise (SMD = 0.23, 95% CI 0.04, 0.42; p = 0.02; low-quality evidence), 24 h (SMD = 0.39, 95% CI 0.15, 0.62; p = 0.001; low-quality evidence), 48 h (SMD = 0.48, 95% CI 0.28, 0.67; p < 0.001; moderate-quality evidence), 72 h (SMD = 0.29, 95% CI 0.11, 0.46; p = 0.001; low-quality evidence) and 96 h post-exercise (SMD = 0.50, 95% CI 0.16, 0.83; p = 0.004; very low-quality evidence). DOMS was reduced at 24 h (SMD = −0.29, 95% CI −0.47, −0.11; p = 0.002; low-quality evidence), 48 h (SMD = −0.28, 95% CI −0.46, −0.09; p = 0.003; low-quality evidence) and 72 h post-exercise (SMD = −0.46, 95% CI −0.69, −0.24; p < 0.001; very low-quality evidence). CMJ height was greater immediately post-exercise (SMD = 0.27, 95% CI 0.01, 0.53; p = 0.04; low-quality evidence), at 24 h (SMD = 0.47, 95% CI 0.11, 0.83; p = 0.01; very low-quality evidence), 48 h (SMD = 0.58, 95% CI 0.24, 0.91; p < 0.001; very low-quality evidence) and 72 h post-exercise (SMD = 0.57, 95% CI 0.03, 1.10; p = 0.04; very low-quality evidence). Polyphenol supplementation did not alter creatine kinase, c-reactive protein, and interleukin−6 at any time points. At 72 h post-exercise, protein carbonyls (SMD = −0.64, 95% CI −1.14, −0.14; p = 0.01) were reduced. Discussion. Limitations of evidence. Risk of bias was high for 10 studies and moderate for 15. Sensitivity analyses excluding the high risk of bias studies reduced the SMDs for MIVC and DOMS, and for CMJ effects at 24 and 48 h were no longer statistically significant. Interpretation. Consuming polyphenol-rich foods, juices and concentrates accelerated recovery of muscle function while reducing muscle soreness in humans. Maximal benefit occurred 48–72 h post-exercise, however, the certainty of the evidence was moderate to very low. Supplementation could be useful when there is limited time between competitive events and impaired recovery could negatively impact performance.


2021 ◽  
Vol 3 (2) ◽  
pp. 111-115
Author(s):  
Dr. Mrudula Shete (PT) ◽  
Dr. Deepak Anap (PT)

Background: Mechanical Diagnosis and Therapy (MDT) is used in the treatment of extremity problems. It is an effective approach in cases of spinal conditions for target population. Availability of the reliable data like RCT and systematic review is a key factor to determine the precise clinical problem and to direct an appropriate intervention. Objectives: The primary aim of this systematic review is to assess the methodological quality of well-designed RCTs related to the MDT classification and treatment for extremity problems.  Design: Systematic review.  Method: Electronic search on various data bases was done. The level of evidence was determined considering the methodological quality of the studies. Results: 1 RCT was included and it met the criteria for high quality. After the assessment of RCT according to the CONSORT guidelines it was found that out of 25 checklist points; 4 methodological faults were found in assessed RCT. Those were; a) sample size determination, b) Blinding after assessment c) Generisability of the trial findings d) Where the full trial protocol can be accessed. Conclusion: The current systematic review found strong evidence of benefits of MDT approach for extremity problems (knee joint). But there was limited evidence in other extremity joints.


2014 ◽  
Vol 84 (3-4) ◽  
pp. 0163-0172 ◽  
Author(s):  
Ismail Boz ◽  
Muaz Belviranli ◽  
Nilsel Okudan

Aim: The purpose of this study was to investigate the effects of curcumin on eccentric exercise-induced muscle damage and oxidative stress in rats. Methods: Thirty male Wistar rats were divided into four groups: Control (C; no curcumin, no exercise; n = 6), Curcumin (Cur; n = 8), Exercise (E; n = 8) and Exercise Plus Curcumin (ECur; n = 8). Curcumin was given for 20 days via oral gavage at doses of 200 mg/kg-1 of body weight per day, dissolved in corn oil. On the 21st day eccentric exercise was provided via a treadmill run and the rats were sacrificed immediately after. Results: Eccentric exercise resulted in significant (p < 0.05) increases in all injury markers such as creatine kinase (CK) and myoglobin, but curcumin supplementation tended to decrease CK activity (p > 0.05) and significantly decreased myoglobin levels (p < 0.05). In blood and muscle samples, malondialdehyde (MDA) levels were not affected by either curcumin or exercise (p > 0.05). MDA levels in liver tissue decreased in the ECur group, compared to the control (p < 0.05). Superoxide dismutase (SOD) activities and glutathione (GSH) levels were affected by neither curcumin nor exercise (p > 0.05), in blood, muscle and liver tissues. Conclusion: The results of this study suggest that curcumin has a protective effect on eccentric exercise induced muscle damage, and that this effect might be independent of oxidative stress and antioxidant systems.


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