Elastic properties of active muscle--on the rebound?
During active lengthening and shortening, muscles exhibit a variety of time-dependent spring properties, including load-dependent and nonlinear stiffness. These properties can be explained as interactions between a spring element and cycling cross bridges within muscle sarcomeres. Several lines of evidence suggest a role for the giant protein titin in active muscle, but specific mechanisms remain to be elucidated.
Monroy
Jenna A
JA
Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ 86011-5640, USA.
Lappin
A Kristopher
AK
Nishikawa
Kiisa C
KC
D064211:Connectin; D004548:Elasticity; D006801:Humans; D007537:Isometric Contraction / Q000502:physiology; D007551:Isotonic Contraction / Q000502:physiology; D009119:Muscle Contraction / Q000502:physiology*; D009124:Muscle Proteins / Q000378:metabolism; D009129:Muscle Tonus / Q000502:physiology*; D011494:Protein Kinases / Q000378:metabolism
D064211:Connectin; D009124:Muscle Proteins; C577285:TTN protein, human; D011494:Protein Kinases