Evidence map›Paper›PMID 31967864›Full record

ArticleJournal of athletic training2020

Sex Differences in Ultrasound-Based Muscle Size and Mechanical Properties of the Cervical-Flexor and -Extensor Muscles.

Takashi Nagai, Nathan D Schilaty, David A Krause, Eric M Crowley, Timothy E Hewett

Open access · diamondAbstract read
In one paragraph

Article in Journal of athletic training, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 2 pooled it
2.6field-weighted citation impact, top 11% 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

19 citing papers in PubMed, 2 syntheses or guidelines pooled it, 28 citations in OpenAlex.

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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

5 authors at 2 institutions in 1 country.

Takashi NagaiBiomechanics Laboratories, Department of Orthopedic Surgery, and Sports Medicine Center, Mayo Clinic, Rochester, MN.
Nathan D SchilatyBiomechanics Laboratories, Department of Orthopedic Surgery, and Sports Medicine Center, Mayo Clinic, Rochester, MN.
David A KrauseDepartment of Physical Medicine & Rehabilitation, Mayo Clinic, Rochester, MN.
Eric M CrowleyBiomechanics Laboratories, Department of Orthopedic Surgery, and Sports Medicine Center, Mayo Clinic, Rochester, MN.
Timothy E HewettBiomechanics Laboratories, Department of Orthopedic Surgery, and Sports Medicine Center, Mayo Clinic, Rochester, MN.
Mayo Clinic in Arizona · USMayo Clinic · US

Funding

Mayo Clinic Interdisciplinary Women's Health Research ProgramK12HD065987 · NICHD · MAYO CLINIC ROCHESTER · PI KANTARCI, KEJAL · 2010 to 2023
$6.7M
NICHD NIH HHS K12 HD065987
6 · The paper itself

Abstract

contextNeck pain (NP), neck injuries, and concussions are more prevalent in female athletes than in their male counterparts. Females exhibit less neck girth, strength, and stiffness against a perturbation. As part of the clinical examination for individuals with NP, ultrasound (US)-based imaging of the cervical muscles has become common. Muscle size or thickness and stiffness can be measured with US-based B-mode and shear-wave elastography (SWE), respectively. Information on reliability, normative values, and sex differences based on US-based muscle size or thickness and stiffness in young and athletic individuals is limited.

objectiveTo evaluate sex differences in US-based muscle size or thickness and biomechanical properties of the cervical-flexor and -extensor muscles.

designCross-sectional study.

settingLaboratory. PATIENTS OR OTHER

participantsA total of 13 women (age = 23.7 ± 1.9 years, height = 167.1 ± 6.1 cm, mass = 63.8 ± 5.6 kg) and 11 men (age = 25.6 ± 4.9 years, height = 178.7 ± 8.3 cm, mass = 78.9 ± 12.0 kg). MAIN OUTCOME MEASURE(S): The same examiner collected all measures, using US B-mode to scan the cross-sectional area and thickness of the longus colli (LC), sternocleidomastoid (SCM), cervical-extensor muscles, and upper trapezius (UT) muscle. The US SWE-mode was used to measure the stiffness of the SCM and UT. Independent

resultsMen had thicker SCMs than women (

conclusionsThe only sex difference was in SCM thickness. However, smaller SCMs in women did not result in less SCM SWE stiffness. We provided normative values for US-based imaging of the cervical-flexor and -extensor muscles in young and athletic men and women.

Indexed as

Sex CharacteristicsAdultAthletic InjuriesBiomechanical PhenomenaFemaleHumansMaleMuscle StrengthNeck MusclesNeck PainReproducibility of ResultsSuperficial Back MusclesUltrasonographyYoung Adultcervical spineneck painstiffness

Identifiers

PMID31967864
PMCPMC7093927
OpenAlexW3002953065

What OpenQuestion holds

Textmetadata
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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.