FACTOR STRUCTURE OF PARAMETERS OF EX VIVO MUSCLE GASTROCNEMIUS MEDI-ALIS ISOMETRIC CONTRACTION IN LABORATORY RATS WITH ACUTE PELVIC LIMB ISCHEMIA
Journal Title: Вісник Одеського національного університету. Біологія - Year 2016, Vol 21, Issue 1
Abstract
Two factors that affect the own muscle contractile ability in isometric mode in rats with acute shim ischemia (1, 3 and 6 h), reproduced by compression of artery femoralis occlusion, were found by the application of method of analysis of the principal components, method of orthogonal rotation of factors in two-dimensional space varimax and scree plot criterion. Tetanic contraction of the muscle was recorded by the strain gauge method for 60 minutes. The muscle was irritated through rectangular pulses (voltage 2 V, 0.2 ms duration, frequency 50 Hz), which were formed in 12 cyclical stimulus patterns 3 sec duration and 5 min period. It was found that the first factor was loaded by variables that characterize the biomechanical muscle contraction properties: muscle strength, the time to peak tension, fusion index, muscle contraction and half-relaxation time, muscle strength increase during tetanic contraction and its reduction during tetanic half-relaxation, and the second factor - muscle fatigue index. The conclusion about the dependence of own ischemic muscle contractile ability in rats on variables of the first factor and influence of fatigue as a secondary factor was made.
Authors and Affiliations
O. A. Melnychuk, S. Ye. Shvaiko
Keywords
Related Articles
- EP ID EP308720
- DOI -
- Views 74
- Downloads 0
DYNAMICS OF THE CONTAMINATIONS WITH FEATHER MITES (ACARI: ASTIGMATA) OF BLACKCAP AND ROBIN MIGRATING THROUGH ZMIINYI ISLAND (THE BLACK SEA, UKRAINE).
Problem. The contamination of the plumage of the Blackcap Sylvia atricapilla (Sylviidae) and the Robin Erithacus rubecula (Muscicapidae), migrating through Zmiinyi island (the Black Sea, Ukraine) with feather mites with...
MICROSCOPIC ALGAE OF BENTHOS OF THE STEPPE RIVER KUCHURGAN (THE NORTH-WESTERN BLACK SEA)
The results of the studies (2010-2016) of the species composition of microscopic algae of benthos of the steppe river Kuchurgan are presented. The aim of this work was to study the taxonomic composition of microscopic al...
PLANTS OF MEDITERRANEAN ORIGIN IN ODESSA’ URBANOFLORA
Odessa appeared as port in the steppe zone’ south, where ships called to from different regions, one of them was Mediterranean, where trade ways were from east to west etc. The aim of our investigation was the discoveri...
VERTICAL DISTRIBUTION OF MUSSEL MYTILUS GALLOPROVINCIALIS (LAMARCK, 1819) OF DIFFERENT PHENOTYPIC GROUPS FOULING THE DEPTH OF ODESA COAST
Mussel Mytilus galloprovincialis (Lamarck, 1819) is widespread in the north-western part of the Black Sea, it is the active filter feeders sea water, is an important component of various zoocenoses. Mollusk is the object...
ANALYSIS OF THE SOZOPHYTES OF THE CHYGRYNSKYI RAVINE (ODESA REGION, UKRAINE)
Steppe biome is practically destroyed in Ukraine. Therefore, areas with steppe plants should be taken under special protection. During 2013-2016 the authors studied flora in Chygrynskyi Ravine, which covers an area of ab...