Evidence map›Paper›PMID 32897526›Full record

SynthesisSports medicine (Auckland, N.Z.)2021

Effects of Vertically and Horizontally Orientated Plyometric Training on Physical Performance: A Meta-analytical Comparison.

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 34 papers, 10 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 10 pooled it
–field-weighted citation impact
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

34 citing papers in PubMed, 10 syntheses or guidelines pooled it.

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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.

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-CampilloLaboratory of Measurement and Assessment in Sport, Department of Physical Activity Sciences, Research Nucleus in Health, Physical Activity and Sport, Universidad de Los Lagos (University of 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), IdiSNA, Universidad Pública de Navarra (UPNA), Pamplona, Spain.
Mikel IzquierdoNavarrabiomed, Complejo Hospitalario de Navarra (CHN), IdiSNA, Universidad Pública de Navarra (UPNA), Pamplona, Spain.
Urs GranacherDivision of Training and Movement Science, University of Potsdam, Potsdam, Germany.ORCID http://orcid.org/0000-0002-7095-813X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn accordance with the principle of training specificity, adaptations to vertically or horizontally orientated plyometric training (VPT, HPT) directly transfer to athletic tasks that are carried out in the same direction as they are performed.

objectivesThe objective of this systematic review and meta-analysis was to determine the relative effect of VPT and HPT on both vertical and horizontal measures of physical performance. DATA SOURCES: Google Scholar, CrossRef, Microsoft Academic, PubMed, Web of Science, Scopus. STUDY ELIGIBILITY CRITERIA: To qualify for inclusion in the meta-analysis, studies must have included a plyometric training intervention that compared jumps executed in a vertical direction [i.e. countermovement jump (CMJ)] to jumps executed in a horizontal direction (i.e. standing horizontal jump). STUDY APPRAISAL AND SYNTHESIS

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

resultsFor between-group analysis on horizontal outcomes, there was a moderate, significant effect size (ES) in favour of HPT (0.65 [95% CI 0.12, 1.18], Z = 2.41 [p = 0.02]). For the analysis on vertical outcomes, there was a trivial, non-significant difference between VPT and HPT (- 0.04 [95% CI - 0.33, 0.24], Z = 0.0.29 [p = 0.77]). Within-group analysis showed HPT to be superior to VPT across horizontally- (1.05 [0.38, 1.72] vs. 0.84 [0.37, 1.31]) and vertically-orientated (0.74 [0.08, 1.40] vs. 0.72 [0.02, 1.43]) performance measures. For horizontally-orientated outcomes, single-factor moderator analyses showed that longer programmes (> 7 weeks), more sessions (> 12) and combined bilateral and unilateral training were most effective, favouring HPT in each case. In vertically orientated outcomes, these same variables showed only trivial differences between HBT and VBT.

conclusionsHPT is at least as effective as VPT at enhancing vertical performance but is superior at enhancing horizontal performance. This means that HPT might be a more efficient method for enhancing multi-vector performance for sport.

Indexed as

Athletic PerformancePlyometric ExerciseSoccerAcclimatizationHumansMuscle Strength

Identifiers

PMID32897526

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.