Evidence map›Paper›PMID 31534773›Full record

ArticleBMC sports science, medicine & rehabilitation2019

Improved maximal strength is not associated with improvements in sprint time or jump height in high-level female football players: a clusterrendomized controlled trial.

Sigurd Pedersen, Kim Arne Heitmann, Edvard H Sagelv, Dag Johansen, Svein Arne Pettersen

Registry-linked trialAbstract read
In one paragraph

Article in BMC sports science, medicine & rehabilitation, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04048928 (Improvements in Maximal Strength Are Not Associated With Improvements in Sprint Time or Jump Height in High-level Female Football Players), which is not on this map. Cited by 12 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing 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.

NCT04048928 nacompletednot on this map

Improvements in Maximal Strength Are Not Associated With Improvements in Sprint Time or Jump Height in High-level Female Football Players: A Cluster-randomized Controlled Trial

TypeinterventionalSponsorUniversity of TromsoRan2018 to 2018Enrolled46ConditionsStrength Training, SoccerArmsmaximal strength training
3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 5 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

5 authors.

Sigurd Pedersen1School of Sports Sciences, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway.ORCID 0000-0001-8018-3318
Kim Arne Heitmann1School of Sports Sciences, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway.
Edvard H Sagelv1School of Sports Sciences, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway.
Dag Johansen2Department of Computer Sciences, Faculty of Natural Sciences and Technology, UiT The Arctic University of Norway, Tromsø, Norway.
Svein Arne Pettersen1School of Sports Sciences, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMaximal strength increments are reported to result in improvements in sprint speed and jump height in elite male football players. Although similar effects are expected in females, this is yet to be elucidated. The aim of this study was to examine the effect of maximal strength training on sprint speed and jump height in high-level female football players.

methodsTwo female football teams were team-cluster-randomized to a training group (TG) performing maximal strength training (MST) twice a week for 5 weeks, or control group (CG) doing their regular pre-season preparations. The MST consisted of 3-4 sets of 4-6 repetitions at ≥85% of 1 repetitions maximum (1RM) in a squat exercise. Sprint speed and jump height were assessed in 5-, 10- and 15 m sprints and a counter-movement jump (CMJ) test, respectively. Nineteen participants in TG (18.3 ± 2.7 years) and 14 in CG (18.3 ± 2.4 years) completed pre- and posttests and were carried forward for final analyses.

resultsThere was no improvement in neither of the sprint times (

conclusionsMST improved maximal strength in female football players to a large extent; however, the improvement in maximal strength did not result in any transference to sprint speed or jump height.

trial registrationThis study was registered at clinicaltrials.gov PRS (Protocol registration and results System) with the code NCT04048928, 07.08.2019, retrospectively registered.

Indexed as

1RMCounter movement jumpSoccerSprintSquats

Identifiers

PMID31534773
PMCPMC6747739

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Registered trials

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.