Evidence map›Paper›PMID 34983627›Full record

ArticleBMC sports science, medicine & rehabilitation2022

Drop jumps versus sled towing and their effects on repeated sprint ability in young basketball players.

Alessandro M Zagatto, Gabriel M Claus, Yago M Dutra, Rodrigo A de Poli, Vithor H F Lopes, Stuart Goodall, Irineu Loturco, Daniel Boullosa

Abstract read
In one paragraph

Article in BMC sports science, medicine & rehabilitation, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  7. Assessment Methods of Sport-Induced Neuromuscular Fatigue: A Scoping Review.International journal of sports physical therapy · 2025
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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.

Alessandro M Zagatto *Post-Graduate Program in Movement Sciences, Laboratory of Exercise Physiology and Sport Performance (LAFIDE), Department of Physical Education, School of Sciences, Sao Paulo State University (UNESP), Av. Eng. Luiz Edmundo Carrijo Coube, 14-01, Vargem Limpa, Bauru, SP, CEP 17033-360, Brazil. azagatto@yahoo.com.br.ORCID http://orcid.org/0000-0003-1065-4158
Gabriel M Claus *Post-Graduate Program in Movement Sciences, Laboratory of Exercise Physiology and Sport Performance (LAFIDE), Department of Physical Education, School of Sciences, Sao Paulo State University (UNESP), Av. Eng. Luiz Edmundo Carrijo Coube, 14-01, Vargem Limpa, Bauru, SP, CEP 17033-360, Brazil.
Yago M DutraPost-Graduate Program in Movement Sciences, Laboratory of Exercise Physiology and Sport Performance (LAFIDE), Department of Physical Education, School of Sciences, Sao Paulo State University (UNESP), Av. Eng. Luiz Edmundo Carrijo Coube, 14-01, Vargem Limpa, Bauru, SP, CEP 17033-360, Brazil.
Rodrigo A de PoliPost-Graduate Program in Movement Sciences, Laboratory of Exercise Physiology and Sport Performance (LAFIDE), Department of Physical Education, School of Sciences, Sao Paulo State University (UNESP), Av. Eng. Luiz Edmundo Carrijo Coube, 14-01, Vargem Limpa, Bauru, SP, CEP 17033-360, Brazil.
Vithor H F LopesPost-Graduate Program in Movement Sciences, Laboratory of Exercise Physiology and Sport Performance (LAFIDE), Department of Physical Education, School of Sciences, Sao Paulo State University (UNESP), Av. Eng. Luiz Edmundo Carrijo Coube, 14-01, Vargem Limpa, Bauru, SP, CEP 17033-360, Brazil.
Stuart GoodallDepartment of Sport, Exercise, & Rehabilitation, Faculty of Health of Life Sciences, Northumbria University, Newcastle upon Tyne, UK.
Irineu LoturcoNucleus of High Performance in Sport, São Paulo, Brazil.
Daniel BoullosaFederal University of Mato Grosso do Sul, Campo Grande, Brazil.

Funding

Conselho Nacional de Desenvolvimento Científico e Tecnológico 307159/2019-1Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) Finance Code 001Fundação de Amparo à Pesquisa do Estado de São Paulo 2017/14187-6Fundação de Amparo à Pesquisa do Estado de São Paulo 2019/22726-0
6 · The paper itself

Abstract

backgroundThe aim of the investigation was to compare the occurrence of post-activation performance enhancement (PAPE) after drop jumps, or heavy sled towing, and the subsequent effect on repeated sprint ability (RSA).

methodsTen young basketball players (17 ± 1 yrs) performed, in randomized order, RSA test with changes of direction after a standardized warm up followed by drop jumps, heavy sled towing, or no exercise (control condition). Neuromuscular assessments composed of two maximal voluntary contractions of the knee extensors, peripheral nerve stimulation, and surface electromyography (EMG), responses were recorded before and immediately after the RSA. The EMG signal of leg muscles during sprinting were also recorded as well as the blood lactate concentration.

resultsThe drop jumps improved the RSA mean time (P = 0.033), total time (P = 0.031), and slowest time (P = 0.029) compared to control condition, while heavy sled towing did not change RSA outcomes (P > 0.05). All conditions exhibited a decrease of doublet high frequency stimulation force (pre-post measurement) (P = 0.023) and voluntary activation (P = 0.041), evidencing the occurrence from peripheral and central components of fatigue after RSA, respectively, but no difference was evident between-conditions. There was a significantly greater EMG activity during sprints for the biceps femoris after drop jumps, only when compared to control condition (P = 0.013).

conclusionRepeated drop jumps were effective to induce PAPE in the form of RSA, while heavy sled towing had no effect on RSA performance in young basketball players. Furthermore, both conditioning activities exhibited similar levels of fatigue following the RSA protocol. Thus, drop jumps may be used as an alternative to induce PAPE and thus improve performance during sprints in young male basketball players.

Indexed as

Neuromuscular fatiguePhysical fitnessPost-activation performance enhancementPost-activation potentiationSport

Identifiers

PMID34983627
PMCPMC8729080

What OpenQuestion holds

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LicenceCC BY
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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.