A study of the contractile force and fatigue resistance of the latissimus dorsi muscle of growing lambs
| العنوان: | A study of the contractile force and fatigue resistance of the latissimus dorsi muscle of growing lambs |
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| المؤلفون: | Carl W. Christensen, Gary L. Zander, Valeri S. Chekanov, Stuart McConchie, Mary L. Faculjak, Luther M. Smith, Gordon B. Jacobs, Q. Cheng, Donald H. Schmidt, Michelle A. Rieder, Susan A. Broaddrick |
| المصدر: | International Journal of Angiology. 5:204-211 |
| بيانات النشر: | Georg Thieme Verlag KG, 2011. |
| سنة النشر: | 2011 |
| مصطلحات موضوعية: | medicine.medical_specialty, business.industry, medicine.medical_treatment, Latissimus dorsi muscle, Skeletal muscle, Stimulation, Surgery, Contractility, chemistry.chemical_compound, Fatigue resistance, medicine.anatomical_structure, Endocrinology, chemistry, Internal medicine, Lactate dehydrogenase, medicine, Cardiology and Cardiovascular Medicine, business, Control muscle, Cardiomyoplasty |
| الوصف: | In adult organisms, when stimulation of skeletal muscle is stopped, all changes revert to control after 10–14 days. This is the reason that training of the skeletal muscle before cardiomyoplasty is not done. We hypothesized that the muscle of a growing organism would not revert during a delay. Four lambs received 8 weeks of electrical stimulation of the left latissimus dorsi muscle (LDM) with the right LDM as control. Contractility force and positive and negative dF/dt were measured after 8 weeks conditioning, 2 weeks delay, and control. Conditioned muscle during a 30-minute fatigue test had decreased contractile force on an average of 7±2%; control muscle had decreased contractile force on an average of 39±4%; and after 2 weeks delay, there was a decrease in the contractile force of 12±2%. A stronger fatigue test was performed after 10 minutes of rest. Conditioned muscle lost an average of 15±5% of their contractile force, 16±2% positive dF/dt, and 14±2% negative dF/dt. Control muscle lost 40±3%, 39±4%, and 42±5%, respectively. After 2 weeks delay, previously conditioned muscle showed the following decreases: contractile force 21±3%, positive dF/dt 19±3%, and negative dF/dt 16±3%. Skeletal muscle biopsies were also taken and levels of lactate dehydrogenase (LDH) fractions were measured. LDH fractions one and two (LDH-1 + 2) after 8 weeks conditioning consisted of 6.7±1.9% (p |
| تدمد: | 1615-5939 1061-1711 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::c1b33ac33380598f7d007d17323cd6b8Test https://doi.org/10.1007/bf02044259Test |
| رقم الانضمام: | edsair.doi...........c1b33ac33380598f7d007d17323cd6b8 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 16155939 10611711 |
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