Evidence map›Paper›PMID 37254837›Full record

ArticleSports health

Hamstring Stiffness and Strength Responses to Repeated Sprints in Healthy Nonathletes and Soccer Players With Versus Without Previous Injury.

Sandro R Freitas, Régis Radaelli, Raúl Oliveira, João R Vaz

Open access · hybridAbstract read
In one paragraph

Article in Sports health. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 13% 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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 9 citations in OpenAlex.

  1. 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

4 authors at 2 institutions in 1 country.

Sandro R FreitasLaboratório de Função Neuromuscular, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz-Quebrada, Lisboa, Portugal.
Régis RadaelliLaboratório de Função Neuromuscular, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz-Quebrada, Lisboa, Portugal.
Raúl OliveiraLaboratório de Função Neuromuscular, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz-Quebrada, Lisboa, Portugal.
João R VazEgas Moniz Center for Interdisciplinary Research, Egas Moniz School of Health and Science, Monte de Caparica, Setúbal, Portugal.
University of Lisbon · PTEscola Superior de Saúde Egas Moniz · PT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe effect of 10 × 30 m repeated sprints on passive and active stiffness of semitendinosus (ST) and biceps femoris long head (BFlh), and knee flexor maximal voluntary isometric contraction (MVIC) and rate of force development (RFD), and whether athletes with previous hamstring injury have a different response, is unknown. HYPOTHESIS: Repeated sprints would (1) increase BFlh stiffness and decrease ST stiffness and knee flexors MVIC and RFD in healthy participants; and (2) greater magnitude of response would be seen in athletes with previous hamstring injury. STUDY

designCase series (experiment I) and case control (experiment II) study designs. LEVEL OF EVIDENCE: Level 3.

methodsHealthy nonathletes attended 2 replicated sessions (experiment I, n = 18), while soccer players with (n = 38) and without (n = 67) previous hamstring injury attended 1 testing session (experiment II).

resultsIn both experiments, the knee flexors MVIC and RFD decreased after the sprints (

conclusionRepeated sprints are likely to decrease the knee flexor's maximal and rapid strength, and to alter the hamstring stiffness in the nonathlete population. Previous hamstring injury does not apparently affect the footballer's hamstring functional and mechanical responses to repeated sprints. CLINICAL RELEVANCE: The responses of hamstring stiffness and knee flexor strength to repeated sprints are unlikely to be associated with hamstring injury.

Indexed as

Hamstring MusclesLeg InjuriesSoccerSoft Tissue InjuriesHumansIsometric ContractionKneeKnee Jointbiceps femoris long headhamstring injuryrate of force developmentsemitendinosusshear wave elastographysoccer

Identifiers

PMID37254837
PMCPMC10606964
OpenAlexW4378781136

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.