Evidence map›Paper›PMID 39863806›Full record

ArticleAnnals of biomedical engineering2025

Measurement and Assessment of Head-to-Helmet Contact Forces.

Turner Jennings, Aidan Tillman, D'mitra Mukasa, Michael Marchev, Sinan Müftü, Rouzbeh Amini

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Annals of biomedical engineering, 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

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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. Chordae Rupture Alters Tricuspid Valve Leaflet Biomechanics.Cardiovascular engineering and technology · 2026
    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

6 authors.

Turner JenningsDepartment of Mechanical and Industrial Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA, 02115, USA.
Aidan TillmanDepartment of Bioengineering, Northeastern University, 360 Huntington Avenue, Boston, MA, 02115, USA.
D'mitra MukasaDepartment of Bioengineering, Northeastern University, 360 Huntington Avenue, Boston, MA, 02115, USA.
Michael MarchevDepartment of Bioengineering, Northeastern University, 360 Huntington Avenue, Boston, MA, 02115, USA.
Sinan Müftü *Department of Mechanical and Industrial Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA, 02115, USA.
Rouzbeh Amini *Department of Mechanical and Industrial Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA, 02115, USA. r.amini@northeastern.edu.ORCID http://orcid.org/0000-0003-3632-6195

Funding

DEVCOM Army Research Laboratory W911NF2120208Division of Civil, Mechanical and Manufacturing Innovation 2049088
6 · The paper itself

Abstract

purposeTo evaluate the population variation in head-to-helmet contact forces in helmet users.

methodsFour different size Kevlar composite helmets were instrumented with contact pressure sensors and chinstrap tension meters. A total number of 89 volunteers (25 female and 64 male volunteers) participated in the study. The length, width, and circumference of their heads were measured and each volunteer was assigned a helmet size. Volunteers were asked to wear the helmet in three different configurations and the chinstrap tension and contact force between the head and each of the seven interior pads were recorded.

resultsThe majority of forces measured on any individual pad were between 0 and 5 N. However, some users exhibited pressure points with forces as high as 30 N. The contact force distribution is non-uniform across the interior of the helmet, with the largest force concentrated at the front. Head shape is a major driver of the observed contact force. There was a statistically significant difference between female and male volunteers, and between groups with different experience levels.

conclusionsThe fit of helmet systems is highly subject specific. The current metrics used to assign helmet sizes may not accurately predict correct helmet fit.

Indexed as

HeadHead Protective DevicesAdultFemaleHumansMaleMiddle AgedPressureErgonomicsHead shapeHelmet fitHomeworkKevlar compositeSensorsSex differences

Identifiers

PMID39863806
PMCPMC11929699

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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.