Bone marrow fat fraction assessment in regard to physical activity: KORA FF4-3-T MR imaging in a population-based cohort
| Autor: | Johanna Nattenmüller, Birgit Linkohr, Elke Wintermeyer, Christopher L. Schlett, Robert C. Bertheau, Roberto Lorbeer, Jürgen Machann, Annette Peters, Fabian Bamberg |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Male
medicine.medical_specialty Waist Population Urology Adipose tissue 030218 nuclear medicine & medical imaging Cohort Studies 03 medical and health sciences 0302 clinical medicine Bone Marrow medicine Humans Whole Body Imaging Radiology Nuclear Medicine and imaging education Exercise Aged education.field_of_study Physical Activity Adipose Tissue Magnetic Resonance Imaging Fat Fraction Hip Lumbar Vertebrae medicine.diagnostic_test Femur Neck business.industry Ultrasound Femur Head Magnetic resonance imaging General Medicine Middle Aged medicine.anatomical_structure 030220 oncology & carcinogenesis Cohort Female Bone marrow Radiology business Cohort study |
| Zdroj: | Eur. Radiol. 30, 3417-3428 (2020) |
| Popis: | To 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.Subjects 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.A 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.In 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.• 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|