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Lehmann S, Retschlag U, Oberbach A, Morgenroth R, Linder N, Schaudinn A, Garnov N, Busse H, Solty K, Prettin C, Köppe-Bauernfeind N, Flehmig G, Selig L, Trips E, Stumvoll M, Petroff D, Blüher M. Visceral fat mass dynamics in a 2-year randomized STrength versus ENdurance training trial in people with obesity. Diabetes Obes Metab 2024; 26:4087-4099. [PMID: 39014526 DOI: 10.1111/dom.15767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 06/12/2024] [Accepted: 06/20/2024] [Indexed: 07/18/2024]
Abstract
AIM To compare the effectiveness of strength versus endurance training on reducing visceral fat in individuals with obesity. MATERIALS AND METHODS For the STrength versus ENdurance (STEN) 24-month randomized clinical trial, we assigned 239 participants with abdominal obesity to either strength or endurance training (two to three times a week, 60 min/training session) in addition to standard nutritional counselling to promote a healthy diet. Changes in abdominal visceral adipose tissue (VAT) area quantified by magnetic resonance imaging after 12 months were defined as a primary endpoint. RESULTS Participants (aged 44 years, 74% women, body mass index: 37 kg/m2, mean VAT volume: 4050 cm3) had an approximately 50% retention rate and a 30% good training programme adherence at 12 months. There was no difference between strength and endurance training in VAT volume dynamics after 12 and 24 months (p = .13). Only in the good adherence group did we find a trend for reduced VAT volume in both training regimens. Independently of the exercise programme, there was a continuous trend for moderate loss of abdominal subcutaneous AT volume, body fat mass, body mass index and improved parameters of insulin sensitivity. Although parameters of physical fitness improved upon both exercise interventions, the dynamics of resting energy expenditure, glucose and lipid metabolism parameters were not different between the intervention groups and did not significantly improve during the 2-year trial (p > .05). CONCLUSIONS Despite heterogeneous individual training responses, strength and endurance training neither affected VAT volume nor key secondary endpoints differently.
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Affiliation(s)
- Stefanie Lehmann
- Integrated Research and Treatment Centre (IFB) AdiposityDiseases, Leipzig University Medical Centre, Leipzig, Germany
- Institute of Clinical Immunology, University of Leipzig, Leipzig, Germany
- Department of Diagnostics, Fraunhofer Institute for Cell Therapy and Immunology, Leipzig, Germany
- Medical Department III - Endocrinology, Nephrology, Rheumatology, University of Leipzig, Leipzig, Germany
| | - Ulf Retschlag
- Integrated Research and Treatment Centre (IFB) AdiposityDiseases, Leipzig University Medical Centre, Leipzig, Germany
- Medical Department III - Endocrinology, Nephrology, Rheumatology, University of Leipzig, Leipzig, Germany
| | - Andreas Oberbach
- Institute of Clinical Immunology, University of Leipzig, Leipzig, Germany
- Department of Cardiac Surgery, Ludwig-Maximilians-University, Munich, Germany
| | - Roland Morgenroth
- Integrated Research and Treatment Centre (IFB) AdiposityDiseases, Leipzig University Medical Centre, Leipzig, Germany
| | - Nicolas Linder
- Integrated Research and Treatment Centre (IFB) AdiposityDiseases, Leipzig University Medical Centre, Leipzig, Germany
- Department of Diagnostic and Interventional Radiology, Leipzig University Hospital, Leipzig, Germany
| | - Alexander Schaudinn
- Department of Diagnostic and Interventional Radiology, Leipzig University Hospital, Leipzig, Germany
| | - Nikita Garnov
- Department of Diagnostic and Interventional Radiology, Leipzig University Hospital, Leipzig, Germany
| | - Harald Busse
- Department of Diagnostic and Interventional Radiology, Leipzig University Hospital, Leipzig, Germany
| | - Kilian Solty
- Department of Diagnostic and Interventional Radiology, Leipzig University Hospital, Leipzig, Germany
| | | | | | - Gesine Flehmig
- Integrated Research and Treatment Centre (IFB) AdiposityDiseases, Leipzig University Medical Centre, Leipzig, Germany
| | - Lars Selig
- Medical Department III - Endocrinology, Nephrology, Rheumatology, University of Leipzig, Leipzig, Germany
| | - Evelyn Trips
- Clinical Trial Centre, University of Leipzig, Leipzig, Germany
| | - Michael Stumvoll
- Integrated Research and Treatment Centre (IFB) AdiposityDiseases, Leipzig University Medical Centre, Leipzig, Germany
- Medical Department III - Endocrinology, Nephrology, Rheumatology, University of Leipzig, Leipzig, Germany
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Zentrum München at the University of Leipzig and University Hospital Leipzig, Leipzig, Germany
| | - David Petroff
- Clinical Trial Centre, University of Leipzig, Leipzig, Germany
| | - Matthias Blüher
- Integrated Research and Treatment Centre (IFB) AdiposityDiseases, Leipzig University Medical Centre, Leipzig, Germany
- Medical Department III - Endocrinology, Nephrology, Rheumatology, University of Leipzig, Leipzig, Germany
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Zentrum München at the University of Leipzig and University Hospital Leipzig, Leipzig, Germany
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Garuba F, Ganapathy A, McKinley S, Jani KH, Lovato A, Viswanath SE, McHenry S, Deepak P, Ballard DH. Quantification of Visceral Fat at the L5 Vertebral Body Level in Patients with Crohn's Disease Using T2-Weighted MRI. Bioengineering (Basel) 2024; 11:528. [PMID: 38927764 PMCID: PMC11200797 DOI: 10.3390/bioengineering11060528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Accepted: 05/16/2024] [Indexed: 06/28/2024] Open
Abstract
The umbilical or L3 vertebral body level is often used for body fat quantification using computed tomography. To explore the feasibility of using clinically acquired pelvic magnetic resonance imaging (MRI) for visceral fat measurement, we examined the correlation of visceral fat parameters at the umbilical and L5 vertebral body levels. We retrospectively analyzed T2-weighted half-Fourier acquisition single-shot turbo spin echo (HASTE) MR axial images from Crohn's disease patients who underwent MRI enterography of the abdomen and pelvis over a three-year period. We determined the area/volume of subcutaneous and visceral fat from the umbilical and L5 levels and calculated the visceral fat ratio (VFR = visceral fat/subcutaneous fat) and visceral fat index (VFI = visceral fat/total fat). Statistical analyses involved correlation analysis between both levels, inter-rater analysis between two investigators, and inter-platform analysis between two image-analysis platforms. Correlational analysis of 32 patients yielded significant associations for VFI (r = 0.85; p < 0.0001) and VFR (r = 0.74; p < 0.0001). Intraclass coefficients for VFI and VFR were 0.846 and 0.875 (good agreement) between investigators and 0.831 and 0.728 (good and moderate agreement) between platforms. Our study suggests that the L5 level on clinically acquired pelvic MRIs may serve as a reference point for visceral fat quantification.
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Affiliation(s)
- Favour Garuba
- School of Medical Education, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA; (F.G.); (A.G.)
| | - Aravinda Ganapathy
- School of Medical Education, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA; (F.G.); (A.G.)
| | - Spencer McKinley
- School of Medical Education, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA; (F.G.); (A.G.)
| | - Karan H. Jani
- Mallinckrodt Institute of Radiology, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA; (K.H.J.); (A.L.)
| | - Adriene Lovato
- Mallinckrodt Institute of Radiology, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA; (K.H.J.); (A.L.)
| | - Satish E. Viswanath
- Department of Biomedical Engineering, School of Engineering, Case Western Reserve University, Cleveland, OH 44106, USA;
| | - Scott McHenry
- Division of Gastroenterology, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA; (S.M.); (P.D.)
| | - Parakkal Deepak
- Division of Gastroenterology, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA; (S.M.); (P.D.)
| | - David H. Ballard
- Mallinckrodt Institute of Radiology, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA; (K.H.J.); (A.L.)
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Battisti S, Pedone C, Tramontana F, Napoli N, Alhamar G, Russo E, Agnoletti V, Paolucci E, Galgani M, Giampalma E, Paviglianiti A, Strollo R. Abdominal adipose tissue distribution assessed by computed tomography and mortality in hospitalised patients with COVID-19: a retrospective longitudinal cohort study. Endocrine 2024; 83:597-603. [PMID: 37736820 DOI: 10.1007/s12020-023-03530-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 09/07/2023] [Indexed: 09/23/2023]
Abstract
BACKGROUND Visceral adiposity has been associated with an increased risk of critical illness in COVID-19 patients. However, if it also associates to a poor survival is still not well established. The aim of the study was to assess the relationship between abdominal fat distribution and COVID-19 mortality. METHODS In this six-month longitudinal cohort study, abdominal visceral (VAT) and subcutaneous adipose tissues (SAT) were measured by computed tomography in a cohort of 174 patients admitted to the emergency department with a diagnosis of COVID-19, during the first wave of pandemic. The primary exposure and outcome measures were VAT and SAT at hospital admission, and death at 30 and 180 days, respectively. RESULTS Overall survival was not different according to VAT (p = 0.94), SAT (p = 0.32) and VAT/SAT ratio (p = 0.64). However, patients in the lowest SAT quartile (thickness ≤ 11.25 mm) had a significantly reduced survival compared to those with thicker SAT (77 vs. 94% at day 30; 74 vs. 91% at day 180, p = 0.01). Similarly, a thinner SAT was associated with lower survival in Intensive Care Unit (ICU) admitted patients, independently of sex or age (p = 0.02). The VAT/SAT ratio showed a non-linear increased risk of ICU admission, which plateaued out and tended for inversion at values greater than 1.9 (p = 0.001), although was not associated with increased mortality rate. CONCLUSIONS In our cohort, visceral adiposity did not increase mortality in patients with COVID-19, but low SAT may be associated with poor survival.
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Affiliation(s)
- Sofia Battisti
- Radiology Department, AUSL Romagna M. Bufalini Hospital, Cesena, Italy
- Radiology Unit, IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) "Dino Amadori", Meldola, Italy
- Department of Experimental, Diagnostic and Specialty Medicine - DIMES, Alma Mater Studiorum-Università di Bologna, S.Orsola-Malpighi Hospital, Bologna, Italy
| | - Claudio Pedone
- Department of Medicine and Surgery, Research Unit of Geriatrics, Università Campus Bio-Medico di Roma, Rome, Italy
- Fondazione Policlinico Universitario Campus Bio-Medico, Operative Research Unit of Geriatrics, Rome, Italy
| | - Flavia Tramontana
- Department of Medicine and Surgery, Research Unit of Endocrinology & Diabetes, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Nicola Napoli
- Department of Medicine and Surgery, Research Unit of Endocrinology & Diabetes, Università Campus Bio-Medico di Roma, Rome, Italy
- Fondazione Policlinico Universitario Campus Bio-Medico, Rome, Italy
| | - Ghadeer Alhamar
- Department of Medicine and Surgery, Research Unit of Endocrinology & Diabetes, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Emanuele Russo
- Anesthesia and Intensive Care Unit, AUSL Romagna, M.Bufalini Hospital, Cesena, Italy
| | - Vanni Agnoletti
- Anesthesia and Intensive Care Unit, AUSL Romagna, M.Bufalini Hospital, Cesena, Italy
| | - Elisa Paolucci
- Internal Medicine Unit, AUSL Romagna, M.Bufalini Hospital, Cesena, Italy
| | - Mario Galgani
- Department of Molecular Medicine and Medical Biotechnology, University of Naples "Federico II", Naples, Italy
- Institute for Endocrinology and Experimental Oncology "G. Salvatore", Consiglio Nazionale delle Ricerche (C.N.R.), Naples, Italy
| | | | - Annalisa Paviglianiti
- Department of Medicine and Surgery, Research Unit of Endocrinology & Diabetes, Università Campus Bio-Medico di Roma, Rome, Italy
- Clinical Hematology Department, Institut Català d'Oncologia-Hospitalet, 08908, Barcelona, Spain
- Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), 08908, Barcelona, Spain
| | - Rocky Strollo
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, Rome, Italy.
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Del Chicca F, Richter H, Müller HP, Kassubek J. MRI-based quantification of adipose tissue distribution in healthy adult cats during body weight gain. Front Vet Sci 2023; 10:1150085. [PMID: 37215477 PMCID: PMC10196178 DOI: 10.3389/fvets.2023.1150085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 04/14/2023] [Indexed: 05/24/2023] Open
Abstract
The incidence of obesity in pet population increased over the last decades. Cats have been suggested as model for human obesity because of similar co-morbidities as diabetes and dyslipidaemia. Aim of this study were to quantify the distribution of visceral and subcutaneous adipose tissue (VAT, SAT respectively) in healthy adult cats during feeding-induced body weight (BW) gain by MRI, and to correlate it to the increased hepatic fat fraction (HFF). Cats received a commercial dry food ad libitum for 40 weeks and were longitudinally scanned three times. VAT and SAT were determined from Dixon MRI data by a dedicated software solution (ATLAS, established in human and rodents). HFF was quantified from a commercially available sequence. At both individual and group level, normalized adipose tissue volumes significantly increased longitudinally, with median VAT/SAT ratio always < 1. With increased BW, more than proportional increased total adipose tissue was observed together with more than proportional increased HFF. HFF is disproportionately high in overweight cats compared to SAT and VAT accumulation in the 40 weeks observation period. Quantitative unbiased MRI examination of different body fat components is useful in longitudinal monitoring of obesity in cats.
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Affiliation(s)
- Francesca Del Chicca
- Clinic for Diagnostic Imaging, Department of Diagnostics and Clinical Services, Vetsuisse Faculty Zurich, Zurich, Switzerland
| | - Henning Richter
- Clinic for Diagnostic Imaging, Department of Diagnostics and Clinical Services, Vetsuisse Faculty Zurich, Zurich, Switzerland
| | | | - Jan Kassubek
- Department of Neurology, University of Ulm, Ulm, Germany
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Xu J, Liu B, Han K, Ye Z, Zhang X, Qiao Y, Jin Y, Jiang J, Su W, Li Y, Zhao J. The Modified Assessment Tool Based on Scapular Y-View for Global Fatty Infiltration in the Supraspinatus Muscle: Correlation, Predictive Performance, and Reliability Analyses. Am J Sports Med 2023; 51:1243-1254. [PMID: 36917780 DOI: 10.1177/03635465231158372] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
BACKGROUND The accurate evaluation of rotator cuff (RC) fatty degeneration after tears is critical for appropriate surgical decision making and prognosis. However, there is currently no reliable and practical tool to reflect the global fatty infiltration (Global-FI) throughout the 3-dimensional (3D) volumetric RC muscles. PURPOSE (1) To determine the correlations between 2 modified assessment tools and the Global-FI and their predictive performances and reliabilities for Global-FI prediction, and (2) to compare these predictive parameters with those of the conventional tool using a single scapular Y-view slice. STUDY DESIGN Cohort study (diagnosis); Level of evidence, 3. METHODS A total of 49 patients with full-thickness RC tears scheduled to undergo arthroscopic repairs were included, and their surgical shoulders underwent 6-point Dixon magnetic resonance imaging preoperatively. The Global-FI was measured by calculating the 3D-volumetric fat fraction (FF) of the whole supraspinatus muscle through all acquired oblique sagittal slices. As a commonly used radiological landmark, the scapular Y-view was used to evaluate single-plane fatty infiltration (Y-FI) by calculating the FF in 1 slice, defined as the conventional assessment tool. Two modified assessment tools expand the analytic imaging by integrating the FFs from the scapular Y-view slice and its neighboring slices, which were calculated by averaging the FFs of these 3 slices (meanY3-FI) and accumulating local 3D-volumetric FFs from 3 slices (volY3-FI), respectively. The correlations between 3 assessment tools and the Global-FI were analyzed, and the predictive performance for Global-FI prediction using these tools was determined by goodness of fit and agreement. Moreover, the inter- and intraobserver reliabilities of these assessment tools were evaluated. Similar analyses were performed in the small-medium, large, or massive tear subgroups. RESULTS The Y-FI was significantly higher than the Global-FI in all cases and tear size subgroups, while the 2 modified assessment tools (meanY3-FI and volY3-FI) did not significantly differ from the Global-FI. All assessment tools were significantly correlated with the Global-FI, but the meanY3-FI and volY3-FI showed stronger correlations than the Y-FI, which was also determined in different tear sizes. Moreover, the regression models of the meanY3-FI and volY3-FI showed superior goodness of fit to Y-FI in Global-FI prediction in all cases and subgroups, with larger coefficients of determination (R2) and smaller root mean square errors. The predicted Global-FI using the regression model of volY3-FI had the best agreement with the measured Global-FI, followed by the meanY3-FI, both showing smaller biases and standard deviation of the percentage difference between predicted- and measured Global-FI than the conventional Y-FI. In addition, the 2 modified assessment tools achieved better interobserver and intraobserver reliabilities than the conventional tool in all cases and subgroups. CONCLUSION Two modified assessment tools (meanY3-FI and volY3-FI) were comparable with the Global-FI of the whole supraspinatus muscle, showing stronger correlations with the Global-FI and better predictive performances and reliabilities than the conventional tool (Y-FI). Moreover, the volY3-FI was slightly superior to meanY3-FI in the predictive performance and reliability.
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Affiliation(s)
- Junjie Xu
- Department of Sports Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Beibei Liu
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Kang Han
- Department of Sports Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zipeng Ye
- Department of Sports Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiuyuan Zhang
- Department of Sports Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yi Qiao
- Department of Sports Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuchen Jin
- Department of Nuclear Medicine, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Nuclear Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai, China.,Human Oncology and Pathogenesis, Memorial Sloan-Kettering Cancer Center, New York, New York, USA
| | - Jia Jiang
- Department of Sports Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wei Su
- Department of Sports Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuehua Li
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jinzhong Zhao
- Department of Sports Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Xu J, Liu B, Qiao Y, Ye Z, Su W, Zhao J. The 3-Dimensional Fatty Infiltration in the Overall Supraspinatus Can Be Predicted by Localized Sectional Accumulation Units: A Cross-Sectional Study in Patients with Atraumatic Small-to-Massive Rotator Cuff Tears. J Bone Joint Surg Am 2023; 105:380-388. [PMID: 36728395 DOI: 10.2106/jbjs.22.00767] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND Fatty infiltration (FI) of the rotator cuff (RC) muscles is one of the most common risk factors for a retear following RC repair. Recent methodological developments focus on using 3-dimensional measurements of the overall FI of RC muscles instead of using single-plane-based measurements. However, the required labor-intensive segmentation and time-consuming post-processing steps need to be optimized for routine clinical use. METHODS We collected all 6-point Dixon magnetic resonance imaging (MRI) slices of the overall supraspinatus in 46 patients with atraumatic small-to-massive RC tears. Using emerging techniques, the overall 3-dimensional FI of the supraspinatus (overall FI, using all N slices) was assessed as the reference. Each sagittal segment of the supraspinatus was defined as a sectional accumulation unit (SAU). The localized FI in SAUs with different scales of N/3, N/6, and N/12 slices (SAU-FIs) was then calculated using piecewise accumulation by stacking neighboring slices after the overall supraspinatus had been sequentially segmented using MRI slices of the same thickness. The capacity of the SAU-FIs to predict the overall FI, and the ideal locations for prediction, were evaluated using linear regression models after the associations were examined. Goodness-of-fit of the regression models was appraised by the coefficient of determination (R 2 ) and root-mean-square error (RMSE). The agreement between the predicted and measured overall FI was assessed using Bland-Altman analysis and the standard deviation of the percent differences (sd%). RESULTS The localized SAU-FIs of the N/3, N/6, and N/12 SAUs generally displayed comparable distributions throughout the normalized distal-proximal long axis of the supraspinatus. The localized SAU-FIs showed substantial correspondence with the overall FI, and the highest correlations were found in the 2/3 SAU (Pearson r and Spearman ρ: 0.95, 0.98), 3/6 and 4/6 SAUs (Pearson r and Spearman ρ: 0.97), and 5/12 to 7/12 SAUs (Pearson r and Spearman ρ: 0.95 to 0.96). The strongest predictors to estimate the overall supraspinatus FI in the regression analysis were these SAU-FIs located in the middle third, which demonstrated good fits to the overall FI (all R 2 ≥ 0.90; RMSE ≤ 1.69). The best agreements between the overall FI predicted by the regression models and the measured overall FI were found in these SAUs (2/3 SAU: sd% = 4.84%; 3/6 and 4/6 SAUs: sd% = 5.14%; 5/12 to 7/12 SAUs: sd% = 6.44%). CONCLUSIONS Specific SAUs near the center of the supraspinatus (2/3, 3/6 and 4/6, and 5/12 to 7/12 SAUs), which displayed the best agreement between the predictions and actual measurements of overall FI values, can serve as appropriate surrogates to estimate the overall FI of the supraspinatus in small-to-massive RC tears. The potential to assess the overall FI of the supraspinatus using specific localized SAUs may improve the speed of analytical strategies for accurately assessing the overall FI of RC muscles and thus enable their routine clinical use in the future. LEVEL OF EVIDENCE Prognostic Level IV . See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Junjie Xu
- Department of Sports Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Beibei Liu
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Yi Qiao
- Department of Sports Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Zipeng Ye
- Department of Sports Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Wei Su
- Department of Sports Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Jinzhong Zhao
- Department of Sports Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
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Hoffmann J, Thiele J, Kwast S, Borger MA, Schröter T, Falz R, Busse M. Measurement of subcutaneous fat tissue: reliability and comparison of caliper and ultrasound via systematic body mapping. Sci Rep 2022; 12:15798. [PMID: 36138057 PMCID: PMC9500055 DOI: 10.1038/s41598-022-19937-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 09/06/2022] [Indexed: 11/09/2022] Open
Abstract
Caliper and ultrasound (US) are used to measure subcutaneous fat tissue depth (SFT) and then to calculate total body fat. There is no evidence-based recommendation as to whether caliper or US are equally accurate. The aim of this paper was therefore to compare reliability of both methods. In this methodical study, 54 participants (BMI: 24.8 ± 3.5 kg/m2; Age: 43.2 ± 21.7 years) were included. Using systematic body mapping, the SFT of 56 areas was measured. We also analyzed 4 body sites via MRI. A comparison between caliper and US detected clear differences in mean SFT of all areas (0.83 ± 0.33 cm vs. 1.14 ± 0.54 cm; p < 0.001) showing moderate reliability (ICC 0.669, 95%CI: 0.625–0.712). US and MRI revealed in the abdominal area a SFT twice as thick as caliper (2.43 ± 1.36 cm vs. 2.26 ± 1.32 cm vs. 1.15 ± 0.66 cm; respectively). Caliper and US revealed excellent intrarater (ICC caliper: 0.944, 95%CI: 0.926–0.963; US: 0.934, 95%CI: 0.924–0.944) and good interrater reliability (ICC caliper: 0.794, 95%CI: 0.754–0.835; US: 0.825, 95%CI: 0.794–0.857). Despite the high reliability in measuring SFT that caliper and US show, our comparison of the two methods yielded clear differences in SFT, particularly in the abdominal area. In accuracy terms, US is preferable for most mapping areas.
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Affiliation(s)
- Jana Hoffmann
- Institute of Sports Medicine and Prevention, University of Leipzig, 04103, Leipzig, Germany.
| | - Jens Thiele
- Department of Radiology, Helios Klinik, 04435, Schkeuditz, Germany
| | - Stefan Kwast
- Institute of Sports Medicine and Prevention, University of Leipzig, 04103, Leipzig, Germany
| | - Michael Andrew Borger
- University Department of Cardiac Surgery, Heart Center Leipzig, 04289, Leipzig, Germany
| | - Thomas Schröter
- University Department of Cardiac Surgery, Heart Center Leipzig, 04289, Leipzig, Germany
| | - Roberto Falz
- Institute of Sports Medicine and Prevention, University of Leipzig, 04103, Leipzig, Germany
| | - Martin Busse
- Institute of Sports Medicine and Prevention, University of Leipzig, 04103, Leipzig, Germany
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