Evidence map›Paper›PMID 26063470›Full record

SynthesisSports medicine (Auckland, N.Z.)2015

The Optimal Load for Maximal Power Production During Lower-Body Resistance Exercises: A Meta-Analysis.

Marco A Soriano, Pedro Jiménez-Reyes, Matthew R Rhea, Pedro J Marín

Abstract readMeta-Analysis
PubMed Publisher
In one paragraph

Synthesis in Sports medicine (Auckland, N.Z.), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed, 5 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

39 citing papers in PubMed, 5 syntheses or guidelines pooled it.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors.

Marco A SorianoDepartment of Physical Activity and Sport Sciences, Kinesiology and Biomechanics Laboratory, San Antonio Catholic University of Murcia, Murcia, Spain.
Pedro Jiménez-Reyes
Matthew R Rhea
Pedro J Marín

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe development of muscular power is often a key focus of sports performance enhancement programs.

objectiveThe purpose of this meta-analysis was to examine the effect of load on peak power during the squat, jump squat, power clean, and hang power clean, thus integrating the findings of various studies to provide the strength and conditioning professional with more reliable evidence upon which to base their program design.

methodsA search of electronic databases [MEDLINE (SPORTDiscus), PubMed, Google Scholar, and Web of Science] was conducted to identify all publications up to 30 June 2014. Hedges' g (95% confidence interval) was estimated using a weighted random-effect model. A total of 27 studies with 468 subjects and 5766 effect sizes met the inclusion criterion and were included in the statistical analyses. Load in each study was labeled as one of three intensity zones: Zone 1 represented an average intensity ranging from 0 to 30% of one repetition maximum (1RM); Zone 2 between 30 and 70% of 1RM; and Zone 3 ≥70% of 1RM.

resultsThese results showed different optimal loads for each exercise examined. Moderate loads (from >30 to <70% of 1RM) appear to provide the optimal load for power production in the squat exercise. Lighter loads (≤30% of 1RM) showed the highest peak power production in the jump squat. Heavier loads (≥70% of 1RM) resulted in greater peak power production in the power clean and hang power clean.

conclusionOur meta-analysis of results from the published literature provides evidence for exercise-specific optimal loads for power production.

Indexed as

Weight LiftingHumansMuscle StrengthResistance TrainingWeight-Bearing

Identifiers

PMID26063470

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.