Evidence map›Paper›PMID 32725695›Full record

Trial reportPhysiological reports2020

Effects of blood flow restriction on muscle size and gene expression in muscle during immobilization: A pilot study.

Saori Kakehi, Yoshifumi Tamura, Atsushi Kubota, Kageumi Takeno, Minako Kawaguchi, Keishoku Sakuraba, Ryuzo Kawamori, Hirotaka Watada

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Physiological reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 2 pooled it
0.9field-weighted citation impact, top 27% 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

14 citing papers in PubMed, 2 syntheses or guidelines pooled it, 23 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Review
  5. Article
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  7. Review
  8. Blood Flow Restriction Training in the Young Athlete.HSS journal : the musculoskeletal journal of Hospital for Special Surgery · 2024
    Article
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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 at 1 institution in 1 country.

Saori KakehiDepartment of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan.
Yoshifumi TamuraDepartment of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan.ORCID https://orcid.org/0000-0002-1685-7821
Atsushi KubotaDepartment of Sports Medicine, Juntendo University Graduate School of Health and Sports Science, Chiba, Japan.
Kageumi TakenoDepartment of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan.
Minako KawaguchiDepartment of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan.
Keishoku SakurabaDepartment of Sports Medicine, Juntendo University Graduate School of Health and Sports Science, Chiba, Japan.
Ryuzo KawamoriDepartment of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan.
Hirotaka WatadaDepartment of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan.
Juntendo University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeMuscle mass is known to rapidly decrease with muscle disuse. Previous reports suggest that repetitive blood flow restriction (BFR) mitigates the reduction of muscle mass with disuse. However, the effects of BFR on muscle atrophy and gene expression levels in muscle during cast immobilization have not been clarified.

methodsTo investigate the effect of BFR on muscle atrophy and gene expression levels during cast immobilization in humans, we recruited 10 healthy males who were randomly divided into the control and BFR treatment groups. All subjects were immobilized with a cast for 14 days. BFR treatment was conducted only in the BFR group. We evaluated cross sectional area (CSA) of thigh muscles by magnetic resonance imaging before and 14 days after cast immobilization. A percutaneous biopsy of the vastus lateralis muscle (VL) was performed before and 1, 7, and 14 days after cast immobilization. Expression of genes related to muscle atrophy and synthesis were evaluated using real-time PCR.

resultsThe CSA of the VL and the thigh flexor muscles were significantly decreased in both groups; however, percent decrease in CSA was significantly smaller in the BFR group compared with the control group. In two-way repeated ANOVA analysis, the time × treatment interaction in gene expression of the muscle-specific ubiquitin ligases muscle ring finger 1 (MuRF1) was significant, and elevated MURF1 expression level by cast immobilization was seemed to be suppressed by the BFR treatment.

conclusionBFR treatment may prevent reduced VL and thigh flexor muscles and increased MuRF1 expression level during cast immobilization. Further study is required to confirm these results.

Indexed as

AdultBlood CirculationGene Expression RegulationHumansImmobilizationMaleMuscle ProteinsMuscle StrengthMuscular AtrophyPilot ProjectsQuadriceps MuscleTripartite Motif ProteinsUbiquitin-Protein LigasesYoung AdultMuscle ProteinsTRIM63 protein, humanTripartite Motif ProteinsUbiquitin-Protein LigasesMuRF1muscle atrophymuscle disuse

Identifiers

PMID32725695
PMCPMC7387888
OpenAlexW3045788078

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.