TY - JOUR

T1 - Effect of repeated prolonged exercise on liver fat content and visceral adipose tissue in well-trained older men

AU - Poggi, Axel Illeris

AU - Andreasen, Martin Winther

AU - Sahl, Ronni Eg

AU - Hansen, Mikkel Thunestvedt

AU - Rømer, Tue

AU - Frandsen, Jacob

AU - Linden, Frederik Hvid

AU - Høgh-Schmidt, Erik

AU - Boesen, Mikael Ploug

AU - Ostrowski, Sisse Rye

AU - Larsen, Steen

AU - Dela, Flemming

AU - Helge, Jørn Wulff

N1 - Publisher Copyright: © 2024 The Authors. Scandinavian Journal of Medicine & Science In Sports published by John Wiley & Sons Ltd.

PY - 2024

Y1 - 2024

N2 - 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 ((Formula presented.)), 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. (Formula presented.), MFO, and Fatmax were not affected by the intervention. Conclusion: The study found that repeated prolonged exercise reduced LF content, but VAT and (Formula presented.) remained unchanged. Aerobic capacity was aligned with lower LF and VAT in older active men.

AB - 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 ((Formula presented.)), 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. (Formula presented.), MFO, and Fatmax were not affected by the intervention. Conclusion: The study found that repeated prolonged exercise reduced LF content, but VAT and (Formula presented.) remained unchanged. Aerobic capacity was aligned with lower LF and VAT in older active men.

KW - aerobic capacity

KW - liver fat

KW - older men

KW - repeated prolonged exercise

KW - visceral adipose tissue

U2 - 10.1111/sms.14612

DO - 10.1111/sms.14612

M3 - Journal article

C2 - 38545946

AN - SCOPUS:85189182138

VL - 34

JO - Scandinavian Journal of Medicine & Science in Sports

JF - Scandinavian Journal of Medicine & Science in Sports

SN - 0905-7188

IS - 4

M1 - e14612

ER -