Evidence map›Paper›PMID 32086579›Full record

ArticleEuropean radiology2020

Bone marrow fat fraction assessment in regard to physical activity: KORA FF4-3-T MR imaging in a population-based cohort.

Robert C Bertheau, Roberto Lorbeer, Johanna Nattenmüller, Elke Wintermeyer, Jürgen Machann, Birgit Linkohr, Annette Peters, Fabian Bamberg, Christopher L Schlett

Abstract read
PubMed Publisher
In one paragraph

Article in European radiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing 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

24 citing papers in PubMed.

  1. Artificial gravity protects bone and prevents bone marrow adipose tissue accumulation in humans during 60 d of bed rest.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2025
    Trial
  2. Trial
  3. Article
  4. Article
  5. Observational
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Obesity, diabetes and risk of bone fragility: How BMAT behavior is affected by metabolic disturbances and its influence on bone health.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2024
    Review
  14. Review
  15. Article
  16. Bone marrow adiposity in diabetes and clinical interventions.Current opinion in endocrinology, diabetes, and obesity · 2022
    Review
  17. Review
  18. Article
  19. Article
  20. Review
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.

Robert C BertheauDepartment of Radiology, Diagnostic and Interventional Radiology, University of Heidelberg, Heidelberg, Germany.
Roberto LorbeerDepartment of Radiology, Ludwig-Maximilian-University Hospital, Munich, Germany.
Johanna NattenmüllerDepartment of Radiology, Diagnostic and Interventional Radiology, University of Heidelberg, Heidelberg, Germany.
Elke WintermeyerSiegfried Weller Institute for Trauma Research, BG Trauma Center Tübingen, Eberhard Karls University Tuebingen, Tuebingen, Germany.
Jürgen MachannDepartment of Diagnostic and Interventional Radiology, Section on Experimental Radiology, University Hospital Tuebingen, Tuebingen, Germany.
Birgit LinkohrGerman Center for Diabetes Research (DZD), Neuherberg, Germany.
Annette PetersInstitute of Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Neuherberg, Germany.
Fabian BambergDepartment of Diagnostic and Interventional Radiology, Medical Center - Faculty of Medicine, University of Freiburg, Hugstetter Straße 55, 79106, Freiburg, Germany.
Christopher L SchlettDepartment of Radiology, Diagnostic and Interventional Radiology, University of Heidelberg, Heidelberg, Germany. Christopher.Schlett@uniklinik-freiburg.de.ORCID http://orcid.org/0000-0002-1576-1481

Funding

Deutsche Forschungsgemeinschaft 245222810
6 · The paper itself

Abstract

objectivesTo establish the effect of different degrees and kinds of physical activity on bone marrow fat (BMAT) content at different anatomical locations in a population-based cohort study undergoing whole-body MR imaging.

methodsSubjects of the KORA FF4 study without known cardiovascular disease underwent BMAT fat fraction (FF) quantification in L1 and L2 vertebrae and femoral heads/necks (hip) via a 2-point T1-weighted VIBE Dixon sequence. BMAT-FF was calculated as mean value (fat image) divided by mean value (fat + water image). Physical activity was determined by self-assessment questionnaire regarding time spent exercising, non-exercise walking, non-exercise cycling, and job-related physical activity.

resultsA total of 385 subjects (96% of 400 available; 56 ± 9.1 years; 58% male) were included in the analysis. Exercise was distributed quite evenly (29% > 2 h/week; 31% ~ 1 h/week (regularly); 15% ~ 1 h/week (irregularly); 26% no physical activity). BMAT-FF was 52.6 ± 10.2% in L1, 56.2 ± 10.3% in L2, 87.4 ± 5.9% in the right hip, and 87.2 ± 5.9% in the left hip (all p < 0.001). Correlation of BMAT-FF between spine and hip was only moderate (r 0.42 to 0.46). Spinal BMAT-FF, but not hip BMAT-FF, was inversely associated with exercise > 2 h/week (p ≤ 0.02 vs. p ≥ 0.35, respectively). These associations remained significant after adjusting for age, gender, waist circumference, and glucose tolerance. No coherent association was found between BMAT-FF and physical activity in the less active groups.

conclusionsIn our study, exercise was inversely correlated with vertebral BMAT-FF, but not hip BMAT-FF, when exercising for more than 2 h per week. Physical activity seems to affect the spine at least preferentially compared to the hip. KEY POINTS: • In our population-based cohort, at least 2 h of physical activity per week were required to show lower levels of bone marrow adipose tissue fat fraction in MRI. • Physical activity seems to affect bone marrow adipose tissue at least preferentially at the spine in contrast to the proximal femur.

Indexed as

ExerciseAdipose TissueAgedBone MarrowCohort StudiesFemaleFemur HeadFemur NeckHipHumansLumbar VertebraeMagnetic Resonance ImagingMaleMiddle AgedWhole Body ImagingAdipose tissueBone marrowFat fractionMagnetic resonance imagingPhysical activity

Identifiers

What Socratic holds

Textmetadata
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.