Evidence map›Paper›PMID 42303680›Full record

ArticleScientific reports2026

Exploration on the influence of menstrual cycle phase on biceps brachii tendon mechanics.

Cori A Calkins, Parisa Alaei, John Winkler, Rowan R Smart, Jennifer M Jakobi

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Scientific reports, 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.

Cori A Calkins *Healthy Exercise and Aging Lab, Faculty of Health and Social Development, School of Health and Exercise Sciences, The University of British Columbia - Okanagan Campus, 150-1147 Research Road (Arts Building), Kelowna, BC, V1V 1V7, Canada.
Parisa Alaei *Healthy Exercise and Aging Lab, Faculty of Health and Social Development, School of Health and Exercise Sciences, The University of British Columbia - Okanagan Campus, 150-1147 Research Road (Arts Building), Kelowna, BC, V1V 1V7, Canada.
John WinklerExercise, Metabolism, and Inflammation Lab, School of Health and Exercise Sciences, University of British Columbia Okanagan, Kelowna, BC, Canada.
Rowan R SmartHealthy Exercise and Aging Lab, Faculty of Health and Social Development, School of Health and Exercise Sciences, The University of British Columbia - Okanagan Campus, 150-1147 Research Road (Arts Building), Kelowna, BC, V1V 1V7, Canada.
Jennifer M JakobiHealthy Exercise and Aging Lab, Faculty of Health and Social Development, School of Health and Exercise Sciences, The University of British Columbia - Okanagan Campus, 150-1147 Research Road (Arts Building), Kelowna, BC, V1V 1V7, Canada. jennifer.jakobi@ubc.ca.

Funding

Natural Sciences and Engineering Research Council of Canada 312038
6 · The paper itself

Abstract

Tendons are essential for force transmission, yet the influence of menstrual cycle phase on upper-limb positional tendon mechanics is unknown. This exploratory study investigated biceps brachii tendon mechanics across the menstrual cycle. Eight females (23.9 ± 4.3 years) underwent ultrasonographic assessment during the menses, follicular, and luteal phases. Between 0 and 20% of maximal voluntary contraction (MVC), tendon elongation was greater (Menses 5.4 ± 2.6 mm; Follicular 4.8 ± 2.7 mm; Luteal 3.3 ± 2.0 mm; p < 0.001), and stiffness lower (Menses 38.4 ± 31.7 N mm

Indexed as

Menstrual CycleMuscle, SkeletalTendonsAdultBiomechanical PhenomenaElastic ModulusFemaleHumansLuteal PhaseMuscle ContractionUltrasonographyYoung AdultCrimpElongationFemaleHysteresisPositionalStiffness

Identifiers

PMID42303680
PMCPMC13279798

What Socratic holds

Textmetadata
LicenceCC BY-NC-ND
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 Socratic graph.