Evidence map›Paper›PMID 33104995›Full record

SynthesisSports medicine (Auckland, N.Z.)2021

Effects of Bilateral and Unilateral Resistance Training on Horizontally Orientated Movement Performance: A Systematic Review and Meta-analysis.

Jason Moran, Rodrigo Ramirez-Campillo, Bernard Liew, Helmi Chaabene, David G Behm, Antonio García-Hermoso, Mikel Izquierdo, Urs Granacher

Abstract readMeta-AnalysisSystematic Review
PubMed Publisher
In one paragraph

Synthesis in Sports medicine (Auckland, N.Z.), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 11 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 11 pooled it
4.0field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 11 syntheses or guidelines pooled it, 49 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 6 institutions in 7 countries.

Jason MoranSchool of Sport, Rehabilitation and Exercise Sciences, University of Essex, Colchester, Essex, UK. jmorana@essex.ac.uk.ORCID http://orcid.org/0000-0001-7452-6855
Rodrigo Ramirez-CampilloDepartment of Physical Activity Sciences, Universidad de Los Lagos, Osorno, Chile.
Bernard LiewSchool of Sport, Rehabilitation and Exercise Sciences, University of Essex, Colchester, Essex, UK.
Helmi ChaabeneDivision of Training and Movement Science, University of Potsdam, Potsdam, Germany.
David G BehmSchool of Human Kinetics and Recreation, Memorial University of Newfoundland, St. John's, Canada.
Antonio García-HermosoNavarrabiomed, Complejo Hospitalario de Navarra (CHN)-Universidad Pública de Navarra (UPNA), IdiSNA, Pamplona, Spain.
Mikel IzquierdoNavarrabiomed, Complejo Hospitalario de Navarra (CHN)-Universidad Pública de Navarra (UPNA), IdiSNA, Pamplona, Spain.
Urs GranacherDivision of Training and Movement Science, University of Potsdam, Potsdam, Germany.
University of Essex · GBUniversity of Potsdam · DEMemorial University of Newfoundland · CAUniversidad de Los Lagos · CLUniversidad de Santiago de Chile · CLUniversidad Publica de Navarra · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBoth bilateral (BLE) and unilateral resistance exercise (ULE) methods can confer benefit to an athlete, but it remains to be established which has a greater effect on movement speed.

objectivesTo evaluate the effects of BLE and ULE on horizontal movement performance. DATA SOURCES: Google Scholar, CrossRef, and PubMed. STUDY ELIGIBILITY CRITERIA: To qualify for inclusion in the meta-analysis, studies must have included a resistance training intervention that compared the effects of BLE and ULE on a measure of movement speed such as sprinting in healthy study participants. STUDY APPRAISAL AND SYNTHESIS

methodsWe used the inverse-variance random-effects model for meta-analyses. Effect sizes (standardised mean difference), calculated from measures of horizontally orientated performance, were represented by the standardised mean difference and presented alongside 95% confidence intervals (CI).

resultsThough both modalities were effective (BLE = 0.60 [95% CI 0.34, 0.87], Z = 4.44 [p < 0.01]; ULE = 0.57 [95% CI 0.24, 0.89], Z = 3.44 [p = 0.0006]), there was no difference between the effect of BLE and ULE on movement speed (0.17 [95% CI - 0.15, 0.50], Z = 1.03 [p = 0.30]). For BLE, combined strength and plyometric training had the largest effect size (0.88 [95% CI 0.40, 1.36]]) followed by plyometric training (0.55 [95% CI 0.09, 1.01]), with the lowest effect in strength training (0.42 [95% CI - 0.02, 0.86]). For ULE, the largest effect size for training type was in plyometric training (0.78 [95% CI 0.33, 1.24]) closely followed by combined (0.63 [95% CI 0.03, 1.24]) with strength (0.29 [95% CI - 0.42, 1.01]) having a substantially lower effect size.

conclusionsBoth BLE and ULE are effective in enhancing horizontal movement performance. However, contrary to popular opinion, supported by the concept of training specificity, ULE was no more effective at achieving this than BLE.

Indexed as

Plyometric ExerciseResistance TrainingAthletesExerciseHumansMuscle Strength

Identifiers

PMID33104995
OpenAlexW3093535125

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.