Temperature-dependent transitions in isometric contractions of rat muscle.
نویسندگان
چکیده
منابع مشابه
Gluteus medius muscle activation during isometric muscle contractions.
CONTEXT Functional subdivisions are proposed to exist in the gluteus medius (GM) muscle. Dysfunction of the GM, in particular its functional subdivisions, is commonly implicated in lower limb pathologies. However, there is a lack of empirical evidence examining the role of the subdivisions of the GM. OBJECTIVES To compare the activation of the functional subdivisions of the GM (anterior, midd...
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During contractions, there is a net efflux of phosphate from skeletal muscle, likely because of an elevated intracellular inorganic phosphate (P(i)) concentration. Over time, contracting muscle could incur a substantial phosphate deficit unless P(i) uptake rates were increased during contractions. We used the perfused rat hindquarter preparation to assess [(32)P]P(i) uptake rates in muscles at ...
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The direct effects of potassium-penicillin-G, kanamycin, streptomycin and chloramphenicol on isometric contraction of isolated rat heart muscle were examined. Potassium-penicillin-G did not depress myocardial contractility but rather increased it. Those increases are not due to penicillin itself but due to a small amount of K+ in potassium-penicillin-G. Kanamycin and streptomycin did show not o...
متن کاملSwelling of sarcoplasmic reticulum in the periphery of muscle fibres after isometric contractions in rat semimembranosus lateralis muscle.
The decline in isometric force, swelling of sarcoplasmic reticulum and loss of desmin was measured in semimembranosus lateralis muscle of male Wistar rats immediately after a short series of brief (500 ms) maximal isometric contractions. For the active muscle, the series ended below (protocol A) and just over muscle optimum length (protocol AA). In one protocol, the muscle remained passive and ...
متن کاملThe effect of isometric contractions of upper and lower limb muscles on the ultrasonic thickness of the transversus abdominis muscle
Background: The transverse abdominis (TrA) muscle is one of the most important muscles that contribute to the stability of the lumbar spine. Strengthening of trunk muscles that have a significant role in trunk stability is very important in the field of professional sport, sport medicine and rehabilitation of patient with low back pain (LBP). Identifying the exercises that can improve the stren...
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ژورنال
عنوان ژورنال: The Journal of Physiology
سال: 1983
ISSN: 0022-3751
DOI: 10.1113/jphysiol.1983.sp014704