We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Bone marrow fat fraction assessment in regard to physical activity: KORA FF4-3-T MR imaging in a population-based cohort.
- Authors
Bertheau, Robert C.; Lorbeer, Roberto; Nattenmüller, Johanna; Wintermeyer, Elke; Machann, Jürgen; Linkohr, Birgit; Peters, Annette; Bamberg, Fabian; Schlett, Christopher L.
- Abstract
<bold>Objectives: </bold>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.<bold>Methods: </bold>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.<bold>Results: </bold>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.<bold>Conclusions: </bold>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.<bold>Key Points: </bold>• 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.
- Subjects
PHYSICAL activity; BONE marrow; MAGNETIC resonance imaging; FEMUR head; WHOLE body imaging; DUAL-energy X-ray absorptiometry; ADIPOSE tissues; HIP joint; FEMUR neck; DIAGNOSTIC imaging; EXERCISE; LUMBAR vertebrae; LONGITUDINAL method
- Publication
European Radiology, 2020, Vol 30, Issue 6, p3417
- ISSN
0938-7994
- Publication type
journal article
- DOI
10.1007/s00330-019-06612-y