title: Effects of high-intensity interval training and moderate-intensity continuous training on glycaemic control and skeletal muscle mitochondrial function in db/db mice.
abstract: Physical activity is known as an effective strategy for prevention and treatment of Type 2 Diabetes. The aim of this work was to compare the effects of a traditional Moderate Intensity Continuous Training (MICT) with a High Intensity Interval Training (HIIT) on glucose metabolism and mitochondrial function in diabetic mice. Diabetic db/db male mice (N = 25) aged 6 weeks were subdivided into MICT, HIIT or control (CON) group. Animals in the training groups ran on a treadmill 5 days/week during 10 weeks. MICT group ran for 80 min (0° slope) at 50-60% of maximal speed (Vmax) reached during an incremental test. HIIT group ran thirteen times 4 minutes (20° slope) at 85-90% of Vmax separated by 2-min-rest periods. HIIT lowered fasting glycaemia and HbA1c compared with CON group (p < 0.05). In all mitochondrial function markers assessed, no differences were noted between the three groups except for total amount of electron transport chain proteins, slightly increased in the HIIT group vs CON. Western blot analysis revealed a significant increase of muscle Glut4 content (about 2 fold) and higher insulin-stimulated Akt phosphorylation ratios in HIIT group. HIIT seems to improve glucose metabolism more efficiently than MICT in diabetic mice by mechanisms independent of mitochondrial adaptations.
authors.affiliation: Université Clermont Auvergne, Laboratoire des Adaptations Métaboliques à l'Exercice en conditions Physiologiques et Pathologiques (AME2P), Clermont-Ferrand, F-63000, France. vivien.chavanelle@valbiotis.com.|Valbiotis S.A.S., La Rochelle, France. vivien.chavanelle@valbiotis.com.
authors.forename: Vivien
authors.initials: V
authors.lastname: Chavanelle
authors.affiliation: Université Clermont Auvergne, Laboratoire des Adaptations Métaboliques à l'Exercice en conditions Physiologiques et Pathologiques (AME2P), Clermont-Ferrand, F-63000, France.
authors.forename: Nathalie
authors.initials: N
authors.lastname: Boisseau
authors.affiliation: Université Clermont Auvergne, Laboratoire des Adaptations Métaboliques à l'Exercice en conditions Physiologiques et Pathologiques (AME2P), Clermont-Ferrand, F-63000, France.
authors.forename: Yolanda F
authors.initials: YF
authors.lastname: Otero
authors.affiliation: INRA, Unité de Nutrition Humaine (UNH, UMR 1019), CRNH Auvergne, France.
authors.forename: Lydie
authors.initials: L
authors.lastname: Combaret
authors.affiliation: INRA, Unité de Nutrition Humaine (UNH, UMR 1019), CRNH Auvergne, France.
authors.forename: Dominique
authors.initials: D
authors.lastname: Dardevet
authors.affiliation: INRA, Unité de Nutrition Humaine (UNH, UMR 1019), CRNH Auvergne, France.
authors.forename: Christophe
authors.initials: C
authors.lastname: Montaurier
authors.affiliation: Valbiotis S.A.S., La Rochelle, France.
authors.forename: Geoffrey
authors.initials: G
authors.lastname: Delcros
authors.affiliation: Valbiotis S.A.S., La Rochelle, France.
authors.forename: Sébastien L
authors.initials: SL
authors.lastname: Peltier
authors.affiliation: Université Clermont Auvergne, Laboratoire des Adaptations Métaboliques à l'Exercice en conditions Physiologiques et Pathologiques (AME2P), Clermont-Ferrand, F-63000, France.
authors.forename: Pascal
authors.initials: P
authors.lastname: Sirvent
mesh_terms: D000818:Animals; D003921:Diabetes Mellitus, Experimental / Q000378:metabolism / Q000628:therapy*; D003924:Diabetes Mellitus, Type 2 / Q000378:metabolism / Q000628:therapy*; D005786:Gene Expression Regulation; D051275:Glucose Transporter Type 4 / Q000378:metabolism; D006442:Glycated Hemoglobin / Q000378:metabolism; D000072696:High-Intensity Interval Training; D051379:Mice; D008928:Mitochondria / Q000378:metabolism / Q000502:physiology*; D018482:Muscle, Skeletal / Q000166:cytology*; D010766:Phosphorylation; D010805:Physical Conditioning, Animal / Q000379:methods*; D051057:Proto-Oncogene Proteins c-akt / Q000378:metabolism
chemical_list: D051275:Glucose Transporter Type 4; D006442:Glycated Hemoglobin; D051057:Proto-Oncogene Proteins c-akt; C495693:Slc2a4 protein, mouse