Evidence map›Paper›PMID 40525110›Full record

ArticlePeerJ2025

Patellar tendon adaptations to resistance training in young women using combined oral contraceptives.

Ingvild Vesterhus, Eirik R Hesseberg, Ken Fjeldberg, Martin K Engstad, Gøran Paulsen, Mette Hansen, Antoine Nordez, Lilian Lacourpaille, Olivier R Seynnes

Abstract read
In one paragraph

Article in PeerJ, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Article
  2. Article
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

9 authors.

Ingvild VesterhusDepartment for Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway.
Eirik R HessebergDepartment for Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway.
Ken FjeldbergDepartment for Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway.
Martin K EngstadDepartment for Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway.
Gøran PaulsenDepartment for Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway.
Mette HansenDepartment for Public Health, Aarhus University, Aarhus, Denmark.
Antoine NordezMouvement - Interactions - Performance, Université de Nantes, Nantes, France.
Lilian LacourpailleMouvement - Interactions - Performance, Université de Nantes, Nantes, France.
Olivier R SeynnesDepartment for Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: The study aimed to examine the impact of combined oral contraceptive pill (OC) use on patellar tendon (PT) adaptation to resistance training in young women. Methods: Fifteen users of OC (28 ± 3 years) (OC group) and 17 eumenorrheic non-users (32 ± 5 years) (NOC group) performed heavy resistance training of the knee extensors over a period equivalent to three menstrual or pill cycles. Maximal isometric strength of the knee extensor muscles, PT cross-sectional area (CSA), tensile stiffness, and shear wave velocity (SWV) were measured before and after the intervention using combined ultrasonography and dynamometry. Results: The training period increased maximal isometric strength in both groups (≈11%, Conclusion: These findings suggest that OC use does not affect the increase in PT CSA and mechanical properties following short-term resistance training in young untrained females.

Indexed as

Adaptation, PhysiologicalContraceptives, Oral, CombinedPatellar LigamentResistance TrainingAdultFemaleHumansMuscle StrengthUltrasonographyYoung AdultContraceptives, Oral, CombinedHormonal influenceOestrogenTendon hypertrophyTendon stiffness

Identifiers

PMID40525110
PMCPMC12169167

What OpenQuestion holds

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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.