Melissa A Linden1, Justin A Fletcher, E Matthew Morris, Grace M Meers, M Harold Laughlin, Frank W Booth, James R Sowers, Jamal A Ibdah, John P Thyfault, R Scott Rector. 1. 1Research Service-Harry S. Truman Memorial Veterans Medical Center, Columbia, MO; 2Department of Medicine, Division of Gastroenterology and Hepatology, University of Missouri, Columbia, MO; 3Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO; 4Department of Biomedical Sciences, University of Missouri, Columbia, MO; 5Department of Medical Pharmacology and Physiology, University of Missouri, Columbia, MO; 6Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO; and 7Department of Medicine, Division of Endocrinology, University of Missouri, Columbia, MO.
Abstract
BACKGROUND: There is increasing use of high-intensity interval-type exercise training in the management of many lifestyle-related diseases. PURPOSE: This study aimed to test the hypothesis that vigorous-intensity interval exercise is as effective as traditional moderate-intensity aerobic exercise training for nonalcoholic fatty liver disease (NAFLD) outcomes in obese, Otsuka Long-Evans Tokushima Fatty (OLETF) rats. METHODS: OLETF rats (age, 20 wk; n = 8-10 per group) were assigned to sedentary (O-SED), moderate-intensity exercise training (O-MOD EX; 20 m·min(-1), 15% incline, 60 min·d(-1), 5 d·wk(-1) of treadmill running), or vigorous-intensity interval exercise training (O-VIG EX; 40 m·min(-1), 15% incline, 6 × 2.5 min bouts per day, 5 d·wk(-1) of treadmill running) groups for 12 wk. RESULTS: Both MOD EX and VIG EX effectively lowered hepatic triglycerides, serum alanine aminotransferase (ALT), perivenular fibrosis, and hepatic collagen 1α1 messenger RNA (mRNA) expression (vs O-SED, P < 0.05). In addition, both interventions increased hepatic mitochondrial markers (citrate synthase activity and fatty acid oxidation) and suppressed markers of de novo lipogenesis (fatty acid synthase, acetyl coenzyme A carboxylase, Elovl fatty acid elongase 6, and steroyl CoA desaturase-1), whereas only MOD EX increased hepatic mitochondrial Beta-hydroxyacyl-CoA dehydrogenase (β-HAD) activity and hepatic triglyceride export marker apoB100 and lowered fatty acid transporter CD36 compared with O-SED. Moreover, whereas total hepatic macrophage population markers (CD68 and F4/80 mRNA) did not differ among groups, MOD EX and VIG EX lowered M1 macrophage polarization markers (CD11c, interleukin-1β, and tumor necrosis factor α mRNA) and MOD EX increased M2 macrophage marker, CD206 mRNA, compared with O-SED. CONCLUSIONS: The accumulation of 15 min·d(-1) of VIG EX for 12 wk had similar effectiveness as 60 min·d(-1) of MOD EX in the management of NAFLD in OLETF rats. These findings may have important health outcome implications as we work to design better exercise training programs for patients with NAFLD.
BACKGROUND: There is increasing use of high-intensity interval-type exercise training in the management of many lifestyle-related diseases. PURPOSE: This study aimed to test the hypothesis that vigorous-intensity interval exercise is as effective as traditional moderate-intensity aerobic exercise training for nonalcoholic fatty liver disease (NAFLD) outcomes in obese, Otsuka Long-Evans Tokushima Fatty (OLETF) rats. METHODS:OLETFrats (age, 20 wk; n = 8-10 per group) were assigned to sedentary (O-SED), moderate-intensity exercise training (O-MOD EX; 20 m·min(-1), 15% incline, 60 min·d(-1), 5 d·wk(-1) of treadmill running), or vigorous-intensity interval exercise training (O-VIG EX; 40 m·min(-1), 15% incline, 6 × 2.5 min bouts per day, 5 d·wk(-1) of treadmill running) groups for 12 wk. RESULTS: Both MOD EX and VIG EX effectively lowered hepatic triglycerides, serum alanine aminotransferase (ALT), perivenular fibrosis, and hepatic collagen 1α1 messenger RNA (mRNA) expression (vs O-SED, P < 0.05). In addition, both interventions increased hepatic mitochondrial markers (citrate synthase activity and fatty acid oxidation) and suppressed markers of de novo lipogenesis (fatty acid synthase, acetyl coenzyme A carboxylase, Elovl fatty acid elongase 6, and steroyl CoA desaturase-1), whereas only MOD EX increased hepatic mitochondrial Beta-hydroxyacyl-CoA dehydrogenase (β-HAD) activity and hepatic triglyceride export marker apoB100 and lowered fatty acid transporter CD36 compared with O-SED. Moreover, whereas total hepatic macrophage population markers (CD68 and F4/80 mRNA) did not differ among groups, MOD EX and VIG EX lowered M1 macrophage polarization markers (CD11c, interleukin-1β, and tumor necrosis factor α mRNA) and MOD EX increased M2 macrophage marker, CD206 mRNA, compared with O-SED. CONCLUSIONS: The accumulation of 15 min·d(-1) of VIG EX for 12 wk had similar effectiveness as 60 min·d(-1) of MOD EX in the management of NAFLD in OLETFrats. These findings may have important health outcome implications as we work to design better exercise training programs for patients with NAFLD.
Authors: María Eugenia Miquilena-Colina; Elena Lima-Cabello; Sonia Sánchez-Campos; María Victoria García-Mediavilla; Miguel Fernández-Bermejo; Tamara Lozano-Rodríguez; Javier Vargas-Castrillón; Xabier Buqué; Begoña Ochoa; Patricia Aspichueta; Javier González-Gallego; Carmelo García-Monzón Journal: Gut Date: 2011-01-26 Impact factor: 23.059
Authors: S Bellentani; G Saccoccio; F Masutti; L S Crocè; G Brandi; F Sasso; G Cristanini; C Tiribelli Journal: Ann Intern Med Date: 2000-01-18 Impact factor: 25.391
Authors: Jennifer C Richards; Tyler K Johnson; Jessica N Kuzma; Mark C Lonac; Melani M Schweder; Wyatt F Voyles; Christopher Bell Journal: J Physiol Date: 2010-06-14 Impact factor: 5.182
Authors: Kerry L Donnelly; Coleman I Smith; Sarah J Schwarzenberg; Jose Jessurun; Mark D Boldt; Elizabeth J Parks Journal: J Clin Invest Date: 2005-05 Impact factor: 14.808
Authors: R Scott Rector; Grace M Uptergrove; E Matthew Morris; Sarah J Borengasser; M Harold Laughlin; Frank W Booth; John P Thyfault; Jamal A Ibdah Journal: Am J Physiol Gastrointest Liver Physiol Date: 2011-02-24 Impact factor: 4.052
Authors: R Scott Rector; Grace M Uptergrove; Sarah J Borengasser; Catherine R Mikus; E Matthew Morris; Scott P Naples; Matthew J Laye; M Harold Laughlin; Frank W Booth; Jamal A Ibdah; John P Thyfault Journal: Am J Physiol Endocrinol Metab Date: 2010-03-16 Impact factor: 4.310
Authors: Melissa A Linden; Justin A Fletcher; E Matthew Morris; Grace M Meers; Monica L Kearney; Jacqueline M Crissey; M Harold Laughlin; Frank W Booth; James R Sowers; Jamal A Ibdah; John P Thyfault; R Scott Rector Journal: Am J Physiol Endocrinol Metab Date: 2013-12-10 Impact factor: 4.310
Authors: Sarah J Borengasser; R Scott Rector; Grace M Uptergrove; E Matthew Morris; James W Perfield; Frank W Booth; Kevin L Fritsche; Jamal A Ibdah; John P Thyfault Journal: J Nutr Metab Date: 2011-09-12
Authors: Nathan C Winn; Thomas J Jurrissen; Zachary I Grunewald; Rory P Cunningham; Makenzie L Woodford; Jill A Kanaley; Dennis B Lubahn; Camila Manrique-Acevedo; R Scott Rector; Victoria J Vieira-Potter; Jaume Padilla Journal: Am J Physiol Endocrinol Metab Date: 2018-12-04 Impact factor: 4.310
Authors: Melissa A Linden; Ryan D Sheldon; Grace M Meers; Laura C Ortinau; E Matthew Morris; Frank W Booth; Jill A Kanaley; Victoria J Vieira-Potter; James R Sowers; Jamal A Ibdah; John P Thyfault; M Harold Laughlin; R Scott Rector Journal: J Physiol Date: 2016-05-27 Impact factor: 5.182
Authors: Alex Von Schulze; Colin S McCoin; Chiemela Onyekere; Julie Allen; Paige Geiger; Gerald W Dorn; E Matthew Morris; John P Thyfault Journal: J Physiol Date: 2018-08-28 Impact factor: 5.182
Authors: E Matthew Morris; Grace M E Meers; Lauren G Koch; Steven L Britton; Justin A Fletcher; Xiaorong Fu; Kartik Shankar; Shawn C Burgess; Jamal A Ibdah; R Scott Rector; John P Thyfault Journal: Am J Physiol Endocrinol Metab Date: 2016-09-06 Impact factor: 4.310
Authors: Melissa A Linden; Kristi T Lopez; Justin A Fletcher; E Matthew Morris; Grace M Meers; Sameer Siddique; M Harold Laughlin; James R Sowers; John P Thyfault; Jamal A Ibdah; R Scott Rector Journal: Appl Physiol Nutr Metab Date: 2015-06-24 Impact factor: 2.665
Authors: Colin S McCoin; Alex Von Schulze; Julie Allen; Kelly N Z Fuller; Qing Xia; Devin C Koestler; Claire J Houchen; Adrianna Maurer; Gerald W Dorn; Kartik Shankar; E Matthew Morris; John P Thyfault Journal: Am J Physiol Endocrinol Metab Date: 2019-04-30 Impact factor: 4.310