Evidence map›Paper›PMID 41925539›Full record

ArticleScandinavian journal of medicine & science in sports2026

Effects of Knee Joint Angle on Intramuscular Blood Flow and Muscle Deoxygenation During Fatiguing Isometric Contractions.

Kazuma Izumi, Keisho Katayama, Yutaka Kano, Noriko Tanaka, Hiroshi Akima

Abstract read
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In one paragraph

Article in Scandinavian journal of medicine & science in sports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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.

Kazuma IzumiGraduate School of Education and Human Development, Nagoya University, Nagoya, Aichi, Japan.ORCID https://orcid.org/0009-0008-5197-1006
Keisho KatayamaResearch Center of Health, Physical Fitness and Sports, Nagoya University, Nagoya, Aichi, Japan.
Yutaka KanoDepartment of Engineering Science, Bioscience and Technology Program, University of Electro-Communications, Chofu, Tokyo, Japan.
Noriko TanakaGraduate School of Education and Human Development, Nagoya University, Nagoya, Aichi, Japan.
Hiroshi AkimaGraduate School of Education and Human Development, Nagoya University, Nagoya, Aichi, Japan.

Funding

Japan Science and Technology Agency JPMJSP2125Ministry of Education, Culture, Sports, Science and Technology 22K19728
6 · The paper itself

Abstract

The purpose of this study was to investigate the effect of the knee joint angle on intramuscular blood flow and muscle deoxygenation during fatiguing intermittent isometric knee extensions. Seventeen healthy young male participants (19.6 ± 1.3 years) performed intermittent (5 s contraction, 5 s relaxation) and incremental isometric knee extensions at 30%, 40%, 50%, 60%, and 70% of maximal voluntary contraction (MVC) consecutively until task failure. Exercise was performed at flexed (90°) and extended (140°; full extension = 180°) knee joint angles. Intramuscular blood flow and muscle oxygen saturation (StO

Indexed as

Isometric ContractionKnee JointMuscle FatigueOxygen ConsumptionQuadriceps MuscleRegional Blood FlowHumansMaleOxygen SaturationPhysical EnduranceSpectroscopy, Near-InfraredTorqueUltrasonography, DopplerYoung Adultfatiguing exerciseintramuscular blood flowknee joint anglemuscle deoxygenationmuscle oxygen consumptionpower Doppler ultrasonography

Identifiers

PMID41925539
PMCPMC13045766

What OpenQuestion holds

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Registered trials

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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.