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A cycle ergometer exercise program improves exercise capacity and inspiratory muscle function in hospitalized patients awaiting heart transplantation: a pilot study
(Hospital Clinicas, Univ Sao Paulo, 2016)
OBJECTIVE: The purpose of this study was to evaluate the effect of a cycle ergometer exercise program on exercise capacity and inspiratory muscle function in hospitalized patients with heart failure awaiting heart ...
Heart failure impairs muscle blood flow and endurance exercise tolerance in COPD
(Hospital Clinicas, Univ Sao Paulo, 2016)
Heart failure, a prevalent and disabling co-morbidity of COPD, may impair cardiac output and muscle blood flow thereby contributing to exercise intolerance. To investigate the role of impaired central and peripheral ...
Structural characteristics of the tendinous cord-papillary muscle junction in healthy and hypertensive rats
(Pergamon-Elsevier B.V. Ltd, 2009-10-01)
Although the myotendinous junction (MTJ) of skeletal striated muscle is well known, more detailed studies regarding the structure of the cardiac MTJ are scarce. The objective of the present study was to investigate the ...
Myocardial function during chronic food restriction in isolated hypertrophied cardiac muscle
(Lippincott Williams & Wilkins, 2000-10-01)
Background: the effect of food restriction (FR) on myocardial performance has been studied in normal hearts. Few experiments analyzed the effects of undernutrition on hearts subjected to cardiac overload. The aim of this ...
Molecular basis for the improvement in muscle metaboreflex and mechanoreflex control in exercise-trained humans with chronic heart failure
(Amer Physiological Soc, 2014-12-01)
Previous studies have demonstrated that muscle mechanoreflex and metaboreflex controls are altered in heart failure (HF), which seems to be due to changes in cyclooxygenase (COX) pathway and changes in receptors on afferent ...
Heart failure increases atrogin-1 and MuRF1 gene expression in skeletal muscle with fiber type-specific atrophy
(Springer, 2010-02-01)
Heart failure (HF) is characterized by a reduced tolerance to exercise due to early fatigue and dyspnea; this may be due in part to skeletal muscle myopathy with a shift from slow to fast fibers and loss of muscle mass. ...
Influence of lisinopril on cardiac remodeling induced by tobacco smoke exposure
(2010-08-13)
Background: To investigate the effect of lisinopril on cardiac remodeling induced by smoking. Material/Methods: Rats were allocated into 3 groups: group CON (n=8): control; group CSE (n=8): cigarette smoke exposure; group ...
Evaluation of Vmax as an index of myocardial contractility during afterload and preload elevations
(1976-12-01)
In order to test if the maximal velocity of shortening (V(max)TP) reflects the level of inotropism and is affected by preload and afterload, the behavior of this index was compared in two groups of anesthetized, atropinized ...
Marine catfish sting causing fatal heart perforation in a fisherman
(2008-06-19)
Many marine catfish have serrated bony stings (spines), which are used in defense against predators, on the dorsal and pectoral fins. While catfish-induced injuries are generally characterized by the pain associated with ...