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Loading rate and contraction duration effects on in vivo human Achilles tendon mechanical properties

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Loading rate and contraction duration effects on in vivo human Achilles tendon mechanical properties. / McCrum, C.; Oberländer, K.D.; Epro, G. et al.
In: Clinical Physiology and Functional Imaging, Vol. 38, No. 3, 31.05.2018, p. 517-523.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

McCrum, C, Oberländer, KD, Epro, G, Krauss, P, James, DC, Reeves, ND & Karamanidis, K 2018, 'Loading rate and contraction duration effects on in vivo human Achilles tendon mechanical properties', Clinical Physiology and Functional Imaging, vol. 38, no. 3, pp. 517-523. https://doi.org/10.1111/cpf.12472

APA

McCrum, C., Oberländer, K. D., Epro, G., Krauss, P., James, D. C., Reeves, N. D., & Karamanidis, K. (2018). Loading rate and contraction duration effects on in vivo human Achilles tendon mechanical properties. Clinical Physiology and Functional Imaging, 38(3), 517-523. https://doi.org/10.1111/cpf.12472

Vancouver

McCrum C, Oberländer KD, Epro G, Krauss P, James DC, Reeves ND et al. Loading rate and contraction duration effects on in vivo human Achilles tendon mechanical properties. Clinical Physiology and Functional Imaging. 2018 May 31;38(3):517-523. Epub 2017 Sept 24. doi: 10.1111/cpf.12472

Author

McCrum, C. ; Oberländer, K.D. ; Epro, G. et al. / Loading rate and contraction duration effects on in vivo human Achilles tendon mechanical properties. In: Clinical Physiology and Functional Imaging. 2018 ; Vol. 38, No. 3. pp. 517-523.

Bibtex

@article{0d9467f1c156493292a3e93fa22c17f2,
title = "Loading rate and contraction duration effects on in vivo human Achilles tendon mechanical properties",
abstract = "Tendons are viscoelastic, which implies loading rate dependency, but loading rates of contractions are often not controlled during assessment of human tendon mechanical properties in vivo. We investigated the effects of sustained submaximal isometric plantarflexion contractions, which potentially negate loading rate dependency, on the stiffness of the human Achilles tendon in vivo using dynamometry and ultrasonography. Maximum voluntary contractions (high loading rate), ramp maximum force contractions with 3 s loading (lower loading rate) and sustained contractions (held for 3 s) at 25%, 50% and 80% of maximal tendon force were conducted. No loading rate effect on stiffness (25–80% max. tendon force) was found. However, loading rate effects were seen up to 25% of maximum tendon force, which were reduced by the sustained method. Sustained plantarflexion contractions may negate loading rate effects on tendon mechanical properties and appear suitable for assessing human Achilles tendon stiffness in vivo.",
author = "C. McCrum and K.D. Oberl{\"a}nder and G. Epro and P. Krauss and D.C. James and N.D. Reeves and K. Karamanidis",
year = "2018",
month = may,
day = "31",
doi = "10.1111/cpf.12472",
language = "English",
volume = "38",
pages = "517--523",
journal = "Clinical Physiology and Functional Imaging",
number = "3",

}

RIS

TY - JOUR

T1 - Loading rate and contraction duration effects on in vivo human Achilles tendon mechanical properties

AU - McCrum, C.

AU - Oberländer, K.D.

AU - Epro, G.

AU - Krauss, P.

AU - James, D.C.

AU - Reeves, N.D.

AU - Karamanidis, K.

PY - 2018/5/31

Y1 - 2018/5/31

N2 - Tendons are viscoelastic, which implies loading rate dependency, but loading rates of contractions are often not controlled during assessment of human tendon mechanical properties in vivo. We investigated the effects of sustained submaximal isometric plantarflexion contractions, which potentially negate loading rate dependency, on the stiffness of the human Achilles tendon in vivo using dynamometry and ultrasonography. Maximum voluntary contractions (high loading rate), ramp maximum force contractions with 3 s loading (lower loading rate) and sustained contractions (held for 3 s) at 25%, 50% and 80% of maximal tendon force were conducted. No loading rate effect on stiffness (25–80% max. tendon force) was found. However, loading rate effects were seen up to 25% of maximum tendon force, which were reduced by the sustained method. Sustained plantarflexion contractions may negate loading rate effects on tendon mechanical properties and appear suitable for assessing human Achilles tendon stiffness in vivo.

AB - Tendons are viscoelastic, which implies loading rate dependency, but loading rates of contractions are often not controlled during assessment of human tendon mechanical properties in vivo. We investigated the effects of sustained submaximal isometric plantarflexion contractions, which potentially negate loading rate dependency, on the stiffness of the human Achilles tendon in vivo using dynamometry and ultrasonography. Maximum voluntary contractions (high loading rate), ramp maximum force contractions with 3 s loading (lower loading rate) and sustained contractions (held for 3 s) at 25%, 50% and 80% of maximal tendon force were conducted. No loading rate effect on stiffness (25–80% max. tendon force) was found. However, loading rate effects were seen up to 25% of maximum tendon force, which were reduced by the sustained method. Sustained plantarflexion contractions may negate loading rate effects on tendon mechanical properties and appear suitable for assessing human Achilles tendon stiffness in vivo.

U2 - 10.1111/cpf.12472

DO - 10.1111/cpf.12472

M3 - Journal article

VL - 38

SP - 517

EP - 523

JO - Clinical Physiology and Functional Imaging

JF - Clinical Physiology and Functional Imaging

IS - 3

ER -