دورية أكاديمية
أعرض في EDS

Changes in human skeletal muscle length during stimulated eccentric muscle actions.

التفاصيل البيبلوغرافية
العنوان: Changes in human skeletal muscle length during stimulated eccentric muscle actions.
المؤلفون: Brown SJ; Division of Exercise and Sport Science, Institute of Food, Nutrition and Human Health, Massey University Albany, Private Bag 102-904, Auckland, New Zealand. s.j.brown@massey.ac.nz, Donnelly A
المصدر: The journal of physiological sciences : JPS [J Physiol Sci] 2011 Jan; Vol. 61 (1), pp. 31-6. Date of Electronic Publication: 2010 Nov 16.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Springer Japan Country of Publication: Japan NLM ID: 101262417 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1880-6562 (Electronic) Linking ISSN: 18806546 NLM ISO Abbreviation: J Physiol Sci Subsets: MEDLINE
أسماء مطبوعة: Publication: Tokyo : Springer Japan
Original Publication: Tokyo, Japan : Physiological Society of Japan, c2006-
مواضيع طبية MeSH: Exercise/*physiology , Muscle Contraction/*physiology , Muscle, Skeletal/*physiology, Adult ; Female ; Humans ; Knee Joint/physiology ; Leg/physiology ; Male ; Musculoskeletal Physiological Phenomena
مستخلص: Following eccentric exercise, increases in muscle length alter the length-tension relation of skeletal muscle. However, its unclear if this change occurs during eccentric exercise. Therefore, 70 eccentric actions of the knee extensors of one leg (with superimposed electrical stimulation) were performed at 100°/s, from full extension to full flexion. Angle-specific eccentric force was recorded throughout. Force decreased at all angles although this was non-uniform. At 70°, force decreased by 25%, whereas at 130°, force decreased by 41%. Initial peak force was recorded at 100° (590 ± 232 N); the exercise bout induced a 21% decrease in peak force and a 10° shift in the position of peak force production to 90°. The rightward shift in the muscle length-tension relation thus occurred during eccentric exercise, where greater force loss at short muscle lengths suggested an eccentric-induced over-stretching of sarcomeres.
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تواريخ الأحداث: Date Created: 20101117 Date Completed: 20110407 Latest Revision: 20231214
رمز التحديث: 20240513
مُعرف محوري في PubMed: PMC10718023
DOI: 10.1007/s12576-010-0118-7
PMID: 21080138
قاعدة البيانات: MEDLINE
الوصف
تدمد:1880-6562
DOI:10.1007/s12576-010-0118-7