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Titolo:
Load-elongation characteristics of in vivo human tendon and aponeurosis
Autore:
Maganaris, CN; Paul, JP;
Indirizzi:
Univ Strathclyde, Scottish Sch Sport Studies, Glasgow G13 1PP, Lanark, Scotland Univ Strathclyde Glasgow Lanark Scotland G13 1PP 13 1PP, Lanark, Scotland Univ Strathclyde, Bioengn Unit, Glasgow G4 0NW, Lanark, Scotland Univ Strathclyde Glasgow Lanark Scotland G4 0NW G4 0NW, Lanark, Scotland
Titolo Testata:
JOURNAL OF EXPERIMENTAL BIOLOGY
fascicolo: 4, volume: 203, anno: 2000,
pagine: 751 - 756
SICI:
0022-0949(200002)203:4<751:LCOIVH>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
MECHANICAL-PROPERTIES; GASTROCNEMIUS-MUSCLE; ISOMETRIC CONTRACTIONS; FORCE CHARACTERISTICS; MAMMALIAN TENDONS; LENGTH; ARCHITECTURE; MODELS; FIBER; RAT;
Keywords:
tendon; aponeurosis; ultrasonography; electrical stimulation; load-elongation; human;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Maganaris, CN Univ Tokyo, Dept Life Sci Sport Sci, Meguro Ku, Komaba 3-8-1, Tokyo 1538902, Japan Univ Tokyo Komaba 3-8-1 Tokyo Japan 1538902 1538902, Japan
Citazione:
C.N. Maganaris e J.P. Paul, "Load-elongation characteristics of in vivo human tendon and aponeurosis", J EXP BIOL, 203(4), 2000, pp. 751-756

Abstract

In the present study, we measured the in vivo load-elongation characteristics of the human tibialis anterior tendon and its central aponeurosis. Measurements were taken in five men using dynamometry, muscle electrical stimulation and ultrasonography. Percutaneous tetanic stimulation of the muscle at successive voltages corresponding to 20, 40, 60, 80 and 100 % of maximum isometric dorsiflexion moment was applied. During electrical stimulation, we recorded the displacements of the tibialis anterior tendon origin and itsaponeurosis proximal end using B-mode ultrasonography. Aponeurosis displacement was calculated by subtracting tendon displacement from the displacement of the aponeurosis proximal end. Tendon and aponeurosis displacements increased curvilinearly from 1.3 to 4 mm and from 3.7 to 12 mm, respectively,as a function of dorsiflexion load. Scaling of the displacements recorded to the resting lengths (measured over the skin) yielded strain values that increased curvilinearly with load, from 0.8 to 2.5 % in the tendon and from2.1 to 7% in the aponeurosis. Tendon strain was smaller by between 61 and 64 % compared with aponeurosis strain at any given contraction level. Thesefindings are in line with reports from in vitro isolated material testing and have important implications for muscle modelling.

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Documento generato il 04/04/20 alle ore 07:46:01