Effect of repeated prolonged exercise on liver fat content and visceral adipose tissue in well‐trained older men

Introduction Liver fat (LF) and visceral adipose tissue (VAT) content decreases with training, however, this has mainly been investigated in sedentary obese or healthy participants. The aim of this study was to investigate the effects of repeated prolonged exercise on LF and VAT content in well‐trai...

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Published in:	Scandinavian journal of medicine & science in sports Vol. 34; no. 4; pp. e14612 - n/a
Main Authors:	Poggi, Axel Illeris, Andreasen, Martin Winther, Sahl, Ronni Eg, Hansen, Mikkel Thunestvedt, Rømer, Tue, Frandsen, Jacob, Linden, Frederik Hvid, Høgh‐Schmidt, Erik, Boesen, Mikael Ploug, Ostrowski, Sisse Rye, Larsen, Steen, Dela, Flemming, Helge, Jørn Wulff
Format:	Journal Article
Language:	English
Published:	Denmark Blackwell Publishing Ltd 01-04-2024
Subjects:	Adipose Tissue - metabolism aerobic capacity Aged Body fat Exercise Exercise Test Humans Intra-Abdominal Fat Liver - diagnostic imaging liver fat Male Obesity - metabolism older men Oxygen Consumption repeated prolonged exercise visceral adipose tissue older men liver fat aerobic capacity repeated prolonged exercise visceral adipose tissue
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Summary:	Introduction Liver fat (LF) and visceral adipose tissue (VAT) content decreases with training, however, this has mainly been investigated in sedentary obese or healthy participants. The aim of this study was to investigate the effects of repeated prolonged exercise on LF and VAT content in well‐trained older men and to compare baseline LF and VAT content to recreationally active older men. Method A group of five well‐trained older men were tested before and after cycling a total distance of 2558 km in 16 consecutive days. VAT content and body composition was measured using DXA before a bicycle ergometer test was performed to determine maximal fat oxidation (MFO), maximal oxygen consumption (VO2max$$ {\mathrm{VO}}_{2_{\mathrm{max}}} $$), and the relative intensity at which MFO occurred (Fatmax). LF content was measured on a separate day using MRI. For comparison of baseline values, a control group of eight healthy age‐ and BMI‐matched recreationally active men were recruited. Results The well‐trained older men had lower VAT (p = 0.02), and a tendency toward lower LF content (p = 0.06) compared with the control group. The intervention resulted in decreased LF content (p = 0.02), but VAT, fat mass, and lean mass remained unchanged. VO2max$$ {\mathrm{VO}}_{2_{\mathrm{max}}} $$, MFO, and Fatmax were not affected by the intervention. Conclusion The study found that repeated prolonged exercise reduced LF content, but VAT and VO2max$$ {\mathrm{VO}}_{2_{\mathrm{max}}} $$ remained unchanged. Aerobic capacity was aligned with lower LF and VAT in older active men.
Bibliography:	Axel Illeris Poggi and Martin Winther Andreasen contributed equally to this work. ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0905-7188 1600-0838
DOI:	10.1111/sms.14612