Cited by 273Liver Disease Diagnosis and TreatmentPhysical Activity and HealthCardiovascular and exercise physiology

High cardiorespiratory fitness is an independent predictor of the reduction in liver fat during a lifestyle intervention in non-alcoholic fatty liver disease

Kantartzis, K, Thamer, C, Peter, A, Machann, J, Schick, F, Schraml, C, Konigsrainer, A, Konigsrainer, I +5 more·2009·Gut

Abstract

OBJECTIVE: Lifestyle intervention with diet modification and increase in physical activity is effective for reducing hepatic steatosis in patients with non-alcoholic fatty liver disease (NAFLD). However, for a similar weight loss, there is a large variability in the change in liver fat. We hypothesised that cardiorespiratory fitness may predict the response to the intervention. DESIGN: Longitudinal study with increase in physical activity and diet modification. SETTING: University teaching hospital. PATIENTS: 50 adults with NAFLD and 120 controls at risk for metabolic diseases. MAIN OUTCOME MEASURES: Total-, subcutaneous abdominal- and visceral adipose tissue by magnetic resonance tomography, liver fat by 1HMR spectroscopy and cardiorespiratory fitness (VO(2,max)) by a maximal cycle exercise test at baseline and after 9 months of follow-up. RESULTS: In all subjects total-, subcutaneous abdominal- and visceral adipose tissue decreased and fitness increased (all p<0.0001) during the intervention. The most pronounced changes were found for liver fat (-31%, p<0.0001). Among the parameters predicting the change in liver fat, fitness at baseline emerged as the strongest factor, independently of total- and visceral adipose tissue as well as exercise intensity (p = 0.005). In the group of subjects with NAFLD at baseline, a resolution of NAFLD was found in 20 individuals. For 1 standard deviation increase in VO(2,max) at baseline the odds ratio for resolution of NAFLD was 2.79 (95% confidence interval, 1.43-6.33). CONCLUSIONS: Cardiorespiratory fitness, independently of total adiposity, body fat distribution and exercise intensity, determines liver fat content in humans, suggesting that fitness and liver fat are causally related to each other. Moreover, measurement of fitness at baseline predicts the effectiveness of a lifestyle intervention in reducing hepatic steatosis in patients with NAFLD.

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Crossref · 10.1136/gut.2008.151977

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Authors
Kantartzis, K., Thamer, C., Peter, A., Machann, J., Schick, F., Schraml, C., Konigsrainer, A., Konigsrainer, I., Krober, S., Niess, A., Fritsche, A., Haring, H.-U., & Stefan, N.
Affiliations
University of Tübingen (DE)
Corresponding author
Stefan, N
Venue
Gut
Publisher
BMJ
Published
2008-12-11
Volume
58
Issue
9
Pages
1281-1288
ISSN
0017-5749 (ISSN-L)
OpenAlex
W1970765180
Cited by
273
References
58
Citations by year
2026: 4 · 2025: 2 · 2024: 8 · 2023: 10 · 2022: 17 · 2021: 12 · 2020: 19 · 2019: 15 · 2018: 21 · 2017: 19 · 2016: 17 · 2015: 15 · 2014: 16 · 2013: 18 · 2012: 25
FWCI
13.61
Type
journal article
Language
en
Open access
closed
Locations
  • Gut (publishedVersion)
  • PubMed (publishedVersion)
  • HighWire Press Open Archive (submittedVersion)
Topics
  • Health Sciences › Medicine › Epidemiology › Liver Disease Diagnosis and Treatment
  • Health Sciences › Medicine › Physiology › Physical Activity and Health
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
Keywords
cardiorespiratory fitness, non-alcoholic fatty liver disease, hepatic steatosis, liver fat reduction, lifestyle intervention, physical activity, dietary change, VO2max, adipose tissue, visceral adipose tissue, subcutaneous abdominal fat, predictors of treatment response
MeSH terms
Adult, Body Composition, Combined Modality Therapy, Diet, Reducing, Exercise Test, Exercise Therapy, Fatty Liver, Female, Follow-Up Studies, Glucose Tolerance Test, Humans, Life Style, Male, Middle Aged, Magnetic Resonance Spectroscopy, Physical Fitness, Linear Models, Logistic Models, Case-Control Studies, Treatment Outcome, Intra-Abdominal Fat, Subcutaneous Fat, Abdominal, Whole Body Imaging

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