Clinical Response to Personalized Exercise Therapy in Heart Failure Patients with Reduced Ejection Fraction is Accompanied by Skeletal Muscle Histological Alterations.

Autor:	Lelyavina TA; National Almazov Medical Research Centre, 197341 Saint-Petersburg, Russia., Galenko VL; National Almazov Medical Research Centre, 197341 Saint-Petersburg, Russia., Ivanova OA; National Almazov Medical Research Centre, 197341 Saint-Petersburg, Russia.; International Laboratory 'Computer Technologies', ITMO University, 197101 St. Petersburg, Russia., Komarova MY; National Almazov Medical Research Centre, 197341 Saint-Petersburg, Russia.; Peter the Great St. Petersburg Polytechnic University, 195251 Saint-Petersburg, Russia., Ignatieva EV; National Almazov Medical Research Centre, 197341 Saint-Petersburg, Russia., Bortsova MA; National Almazov Medical Research Centre, 197341 Saint-Petersburg, Russia., Yukina GY; Pavlov First State Medical University of St. Petersburg, 197022 Saint-Petersburg, Russia., Khromova NV; National Almazov Medical Research Centre, 197341 Saint-Petersburg, Russia., Sitnikova MY; National Almazov Medical Research Centre, 197341 Saint-Petersburg, Russia., Kostareva AA; National Almazov Medical Research Centre, 197341 Saint-Petersburg, Russia.; Department of Women's and Children's Health, Karolinska Institutet, 17177 Stockholm, Sweden., Sergushichev A; International Laboratory 'Computer Technologies', ITMO University, 197101 St. Petersburg, Russia., Dmitrieva RI; National Almazov Medical Research Centre, 197341 Saint-Petersburg, Russia.
Jazyk:	angličtina
Zdroj:	International journal of molecular sciences [Int J Mol Sci] 2019 Nov 05; Vol. 20 (21). Date of Electronic Publication: 2019 Nov 05.
DOI:	10.3390/ijms20215514
Abstrakt:	A bstract: Heart failure (HF) is associated with skeletal muscle wasting and exercise intolerance. This study aimed to evaluate the exercise-induced clinical response and histological alterations. One hundred and forty-four HF patients were enrolled. The individual training program was determined as a workload at or close to the lactate threshold (LT1); clinical data were collected before and after 12 weeks/6 months of training. The muscle biopsies from eight patients were taken before and after 12 weeks of training: histology analysis was used to evaluate muscle morphology. Most of the patients demonstrated a positive response after 12 weeks of the physical rehabilitation program in one or several parameters tested, and 30% of those showed improvement in all four of the following parameters: oxygen uptake (VO2) peak, left ventricular ejection fraction (LVEF), exercise tolerance (ET), and quality of life (QOL); the walking speed at LT1 after six months of training showed a significant rise. Along with clinical response, the histological analysis detected a small but significant decrease in both fiber and endomysium thickness after the exercise training course indicating the stabilization of muscle mechanotransduction system. Together, our data show that the beneficial effect of personalized exercise therapy in HF patients depends, at least in part, on the improvement in skeletal muscle physiological and biochemical performance. Competing Interests: The authors declare no conflict of interest.
Databáze:	MEDLINE
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