The impact of different motor activity on body composition, density of capillaries and fibers in the heart and soleus muscles, and cell's migration in vitro in male rats

Pařízková, J; Wachtlová, M; M, Soukupova

doi:10.1007/bf00699121

Cited by 10 publications

References 12 publications

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Cardiac Physiology of Pregnancy

May

2015

Comprehensive Physiology

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Although the physiology of the heart and vascular system has not changed, there are many things we have learned and are still learning today. Research related to heart adaptations during pregnancy has been performed since the 1930s. Since the mid-1950s, researchers began to look at changes in the maternal cardiovascular system during exercise while pregnant. Research related to exercise during pregnancy and offspring heart development began and has continued since the 1970s. We will review the normal female cardiovascular system adaptations to pregnancy in general. Additionally, topics related to maternal cardiac adaptations to pregnancy during acute exercise, as well as the chronic conditioning response from exercise training will be explored. Since physical activity during pregnancy influences fetal development, the fetal cardiac development will be discussed in regards to acute and chronic maternal exercise. Similarly, the influence of various types of maternal exercise on acute and chronic fetal heart responses will be described. Briefly, the topics related to how and if there is maternal-fetal synchrony will be explained. Lastly, the developmental changes of the fetal cardiovascular system that persist after birth will be explored. Overall, the article will discuss maternal cardiac physiology related to changes with normal pregnancy, and exercise during pregnancy, as well as fetal cardiac physiology related to changes with normal development, and exercise during pregnancy as well as developmental changes in offspring after birth.

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Cardiac Physiology of Pregnancy

May

2015

Comprehensive Physiology

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Control of Blood Flow to Cardiac and Skeletal Muscle During Exercise

Laughlin

Korthuis

Duncker

et al. 1996

Comprehensive Physiology

135

211

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Subsarcolemmal mitochondria and capillarization of soleus muscle fibers in young rats subjected to an endurance training

Müller

1976

Cell Tissue Res.

100

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Rats, 6 weeks old, were subjected to a program of endurance running for 3, 6 and 12 weeks. 0.5 to 0.8 mum thick sections of Epon embedded soleus muscles were studied with morphometric methods. In cross-sections the area occupied by subsarcolemmal mitochondria was independent of the age, but was 53% higher after 12 weeks of training. The mean depth of the zones with subsarcolemmal mitochondria increased only 15% to about 0.9 mum. Thus, the subsarcolemmal mitochondria showed a pronounced spreading at the muscle fiber surface in trained muscles.-The number of capillaries per fiber decreased slightly in controls and increased not significantly in trained muscles. It is concluded that the subsarcolemmal mitochondria supply the energy for the active transport of metabolites through the sarcolemma in oxidative muscle fibers, and that they are the limiting factor for endurance performance of the soleus muscle fibers because the changes in the capillarization were only small. It is suggested that the subsarcolemmal and the interfibrillar mitochondria have different functions and may therefore represent different types of mitochondria which can be distinguished by their morphology as well as by their biochemical properties.

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The impact of different motor activity on body composition, density of capillaries and fibers in the heart and soleus muscles, and cell's migration in vitro in male rats

Cited by 10 publications

References 12 publications

Cardiac Physiology of Pregnancy

Cardiac Physiology of Pregnancy

Control of Blood Flow to Cardiac and Skeletal Muscle During Exercise

Subsarcolemmal mitochondria and capillarization of soleus muscle fibers in young rats subjected to an endurance training

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