Evidence for a vertebrate catapult: elastic energy storage in the plantaris tendon during frog jumping
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چکیده
منابع مشابه
Evidence for a vertebrate catapult: elastic energy storage in the plantaris tendon during frog jumping.
Anuran jumping is one of the most powerful accelerations in vertebrate locomotion. Several species are hypothesized to use a catapult-like mechanism to store and rapidly release elastic energy, producing power outputs far beyond the capability of muscle. Most evidence for this mechanism comes from measurements of whole-body power output; the decoupling of joint motion and muscle shortening expe...
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The ability of birds to perform effective jumps may play an important role in predator avoidance and flight initiation. Jumping can provide the vertical acceleration necessary for a rapid takeoff, which may be particularly important for ground-dwelling birds such as phasianids. We hypothesized that by making use of elastic energy storage and release, the leg muscles could provide the large powe...
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In order to facilitate locomotion and limb movement many animals store energy elastically in their tendons. The formation of crosslinked collagen fibers in tendons results in the conversion of weak, liquid-like embryonic tissues into tough elastic solids that can store energy and perform work. Collagen fibers in the form of fascicles are the major structural units found in tendons. The purpose ...
متن کاملMidportion Achilles tendinosis and the plantaris tendon.
OBJECTIVES When re-operating patients with midportion Achilles tendinosis, having had a poor effect of ultrasound (US) and Doppler-guided scraping, the author found the involvement of the plantaris tendon to be a likely reason for the poor result. The aim of this study was to investigate the occurrence of a plantaris tendon in close relation to the Achilles tendon in consecutive patients with m...
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ژورنال
عنوان ژورنال: Biology Letters
سال: 2011
ISSN: 1744-9561,1744-957X
DOI: 10.1098/rsbl.2011.0982