A 6-month exercise intervention in type 2 diabetes reduced visceral abdominal fat (348 to 219 mL, P<0.01) and hepatic triglyceride content (6.8% to 4.6%, P<0.01), but did not change cardiac function.
Observational (n=12)
Does a 6-month exercise intervention followed by a high-altitude trekking expedition reduce organ-specific fat accumulation and improve cardiac function in patients with type 2 diabetes mellitus?
A 6-month exercise intervention in patients with type 2 diabetes mellitus reduces visceral, hepatic, and paracardial fat but does not alter cardiac function.
Absolute Event Rate: 219% vs 348%
p-value: p=<.01
PURPOSE: To prospectively assess the effects of an exercise intervention on organ-specific fat accumulation and cardiac function in type 2 diabetes mellitus. MATERIALS AND METHODS: Written informed consent was obtained from all participants, and the study protocol was approved by the medical ethics committee. The study followed 12 patients with type 2 diabetes mellitus (seven men; mean age, 46 years ± 2 standard error) before and after 6 months of moderate-intensity exercise, followed by a high-altitude trekking expedition with exercise of long duration. Abdominal, epicardial, and paracardial fat volume were measured by using magnetic resonance (MR) imaging. Cardiac function was quantified with cardiac MR, and images were analyzed by a researcher who was supervised by a senior researcher (4 and 21 years of respective experience in cardiac MR). Hepatic, myocardial, and intramyocellular triglyceride (TG) content relative to water were measured with proton MR spectroscopy at 1.5 and 7 T. Two-tailed paired t tests were used for statistical analysis. RESULTS: Exercise reduced visceral abdominal fat volume from 348 mL ± 57 to 219 mL ± 33 (P < .01), and subcutaneous abdominal fat volume remained unchanged (P = .9). Exercise decreased hepatic TG content from 6.8% ± 2.3 to 4.6% ± 1.6 (P < .01) and paracardial fat volume from 4.6 mL ± 0.9 to 3.7 mL ± 0.8 (P = .02). Exercise did not change epicardial fat volume (P = .9), myocardial TG content (P = .9), intramyocellular lipid content (P = .3), or cardiac function (P = .5). CONCLUSION: A 6-month exercise intervention in type 2 diabetes mellitus decreased hepatic TG content and visceral abdominal and paracardial fat volume, which are associated with increased cardiovascular risk, but cardiac function was unaffected. Tissue-specific exercise-induced changes in body fat distribution in type 2 diabetes mellitus were demonstrated in this study.
Jonker et al. (Tue,) conducted a observational in Type 2 diabetes mellitus (n=12). Moderate-intensity exercise and high-altitude trekking vs. Baseline was evaluated on Visceral abdominal fat volume (mL) (p=<.01). A 6-month exercise intervention in type 2 diabetes reduced visceral abdominal fat (348 to 219 mL, P<0.01) and hepatic triglyceride content (6.8% to 4.6%, P<0.01), but did not change cardiac function.
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