Effects of Endurance Training on Detrimental Structural, Cellular, and Functional Alterations in Skeletal Muscles of Heart Failure With Preserved Ejection Fraction.

Bowen, T Scott; Herz, Christian; Rolim, Natale P L; Berre, Anne-Marie Ormbostad; Halle, Martin; Kricke, Angela; Linke, Axel; da Silva, Gustavo Justo; Wisloff, Ulrik; Adams, Volker

doi:10.1016/j.cardfail.2018.08.009

2018

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Titel:: Effects of Endurance Training on Detrimental Structural, Cellular, and Functional Alterations in Skeletal Muscles of Heart Failure With Preserved Ejection Fraction.
Dokumenttyp:: Article; Journal Article
Autor(en):: Bowen, T Scott; Herz, Christian; Rolim, Natale P L; Berre, Anne-Marie Ormbostad; Halle, Martin; Kricke, Angela; Linke, Axel; da Silva, Gustavo Justo; Wisloff, Ulrik; Adams, Volker
Abstract:: BACKGROUND: Heart failure with preserved ejection fraction (HFpEF) is underpinned by detrimental skeletal muscle alterations that contribute to disease severity, yet underlying mechanisms and therapeutic treatments remain poorly established. This study used a nonhuman animal model of HFpEF to better understand whether skeletal muscle abnormalities were (1) fiber-type specific and (2) reversible by various exercise training regimes. METHODS AND RESULTS: Lean control rats were compared with obese ZSF1 rats at 20 weeks and then 8 weeks after sedentary, high-intensity interval training, or moderate continuous treadmill exercise. Oxidative soleus and glycolytic extensor digitorum longus (EDL) muscles were assessed for fiber size, capillarity, glycolytic metabolism, autophagy, and contractile function. HFpEF reduced fiber size and capillarity by 20%-50% (P < .05) in both soleus and EDL, but these effects were not reversed by endurance training. In contrast, both endurance training regimes in HFpEF attenuated the elevated lactate dehydrogenase activity observed in the soleus. Autophagy was down-regulated in EDL and up-regulated in soleus (P < .05), with no influence of endurance training. HFpEF impaired contractile forces of both muscles by ∼20% (P < .05), and these were not reversed by training. CONCLUSIONS: Obesity-related HFpEF was associated with detrimental structural, cellular, and functional alterations to both slow-oxidative and fast-glycolytic skeletal muscles that could not be reversed by endurance training.
Zeitschriftentitel:: J Card Fail
Jahr:: 2018
Band / Volume:: 24
Heft / Issue:: 9
Seitenangaben Beitrag:: 603-613
Volltext / DOI:: doi:10.1016/j.cardfail.2018.08.009
PubMed:: http://view.ncbi.nlm.nih.gov/pubmed/30195827
Print-ISSN:: 1071-9164
TUM Einrichtung:: Poliklinik für Präventive und Rehabilitative Sportmedizin
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mediaTUM Gesamtbestand Einrichtungen Schools TUM School of Medicine and Health Departments Clinical Medicine Poliklinik für Präventive Sportmedizin und Sportkardiologie (Prof. Halle)2018