Document Detail

Hindlimb interarticular coordinations in Microcebus murinus in maximal leaping.
MedLine Citation:
PMID:  20348344     Owner:  NLM     Status:  MEDLINE    
The purpose of this study was to investigate the pattern of coordinations of the hindlimb joints in the world's smallest living primate (Microcebus murinus). The sequencing and timing of joint rotations have been analyzed in five adult males performing maximal leaping from a take-off immobile platform to their own wooden nest. Angular kinematics of hip, knee, angle and metatarso-phalangeal (MT) joints were deduced from high-speed X-ray films in the sagittal plane of the animals. The body mass center (BMC) of the lemurs was assimilated to their iliac crest. The maximal airborne performance of the lemurs was 0.33+/-0.04 m, which represented 2.55+/-0.36 times their snout-vent length. Take-off instant occurred 72+/-7 ms after the start of the push-off, with a BMC velocity of 3.23+/-0.48 m s(-1), oriented 55+/-14 deg. with the horizontal plane. The kinematic analysis of the joints and musculo-tendon architecture of the M. murinus plantar flexors pointed out mechanical power amplifier mechanisms (i.e. stretch-shortening cycle of hindlimb muscles and proximo-to-distal sequence).
Pierre Legreneur; François-Régis Thévenet; Paul-Antoine Libourel; Karine M Monteil; Stéphane Montuelle; Emmanuelle Pouydebat; Vincent Bels
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of experimental biology     Volume:  213     ISSN:  1477-9145     ISO Abbreviation:  J. Exp. Biol.     Publication Date:  2010 Apr 
Date Detail:
Created Date:  2010-03-29     Completed Date:  2010-07-08     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0243705     Medline TA:  J Exp Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  1320-7     Citation Subset:  IM    
EA 647, CRIS, Université de Lyon, 27-29 boulevard du 11 Novembre 1918, Villeurbanne Cedex, France.
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MeSH Terms
Behavior, Animal / physiology
Cheirogaleidae* / anatomy & histology,  physiology
Hindlimb* / anatomy & histology,  physiology
Movement / physiology*

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