The effect of load on Achilles tendon structure in novice runners

Omar W. Heyward; Lucas M. Rabello; Lucas van der Woude; Inge van den Akker-Scheek; Alli Gokeler; Henk van der Worp; Johannes Zwerver

doi:10.1016/j.jsams.2017.11.007

The effect of load on Achilles tendon structure in novice runners

Omar W. Heyward^*, Lucas M. Rabello, Lucas van der Woude, Inge van den Akker-Scheek, Alli Gokeler, Henk van der Worp, Johannes Zwerver

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

Objectives: To observe the changes in Achilles tendon structure in novice runners, with loading prescriptions of 100% body weight compared to 20% body weight.

Design: Randomised crossover.

Methods: Twenty novice runners participated in two separate running bouts spaced 14 days apart, one of high load at 100% body weight, and one of low load at 20% body weight. Tendon structure was measured by ultrasonographic tissue characterisation on 6 occasions; immediately prior to each run, 2 and 7 days after each run.

Results: The interaction effect of time and condition was not found to be significant for echotypes I-IV [Wald chi-square = 2.8, d.f. = 2, P=0.247; Wald chi-square=2.888, d.f. = 2, P=0.236; Wald chi-square=1.385, d.f. = 2, P=0.5; Wald chi-square=4.19, d.f. = 2, P=0.123], respectively. A significant effect of time was found for echotypes Ill [Wald chi-square=6.785, d.f. = 2, P=0.0.034] and IV [Wald chi-square=7.491, d.f. = 2, P=0.0.024].

Conclusions: The decrease in echotypes III and IV suggest that moderate loads can be applied to the Achilles tendon without compromising tendon structure. Low to moderate loads may be beneficial in the management of Achilles tendinopathy. Further studies should focus on protocols with higher loading and/or repetitive loading in athletic populations with and without Achilles tendinopathy to assess any differences in tendon structure. (C) 2017 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	661-665
Number of pages	5
Journal	Journal of Science and Medicine in Sport
Volume	21
Issue number	7
DOIs	https://doi.org/10.1016/j.jsams.2017.11.007
Publication status	Published - Jul-2018

Keywords

Tendinopathy
Achilles tendinopathy
Athletic injuries
Sports medicine
Ultrasonography
Ultrasonographic tissue characterisation
ULTRASOUND TISSUE CHARACTERIZATION
BODY POSITIVE-PRESSURE
GAME LOADS
EXERCISE
QUANTIFICATION
RESPOND

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The effect of load on Achilles tendon structure in novice runnersFinal publisher's version, 389 KBLicence: Taverne

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@article{dae67588f6dc4d47b2b7cd007a49ab97,

title = "The effect of load on Achilles tendon structure in novice runners",

abstract = "Objectives: To observe the changes in Achilles tendon structure in novice runners, with loading prescriptions of 100% body weight compared to 20% body weight.Design: Randomised crossover.Methods: Twenty novice runners participated in two separate running bouts spaced 14 days apart, one of high load at 100% body weight, and one of low load at 20% body weight. Tendon structure was measured by ultrasonographic tissue characterisation on 6 occasions; immediately prior to each run, 2 and 7 days after each run.Results: The interaction effect of time and condition was not found to be significant for echotypes I-IV [Wald chi-square = 2.8, d.f. = 2, P=0.247; Wald chi-square=2.888, d.f. = 2, P=0.236; Wald chi-square=1.385, d.f. = 2, P=0.5; Wald chi-square=4.19, d.f. = 2, P=0.123], respectively. A significant effect of time was found for echotypes Ill [Wald chi-square=6.785, d.f. = 2, P=0.0.034] and IV [Wald chi-square=7.491, d.f. = 2, P=0.0.024].Conclusions: The decrease in echotypes III and IV suggest that moderate loads can be applied to the Achilles tendon without compromising tendon structure. Low to moderate loads may be beneficial in the management of Achilles tendinopathy. Further studies should focus on protocols with higher loading and/or repetitive loading in athletic populations with and without Achilles tendinopathy to assess any differences in tendon structure. (C) 2017 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.",

keywords = "Tendinopathy, Achilles tendinopathy, Athletic injuries, Sports medicine, Ultrasonography, Ultrasonographic tissue characterisation, ULTRASOUND TISSUE CHARACTERIZATION, BODY POSITIVE-PRESSURE, GAME LOADS, EXERCISE, QUANTIFICATION, RESPOND",

author = "Heyward, {Omar W.} and Rabello, {Lucas M.} and {van der Woude}, Lucas and {van den Akker-Scheek}, Inge and Alli Gokeler and {van der Worp}, Henk and Johannes Zwerver",

year = "2018",

month = jul,

doi = "10.1016/j.jsams.2017.11.007",

language = "English",

volume = "21",

pages = "661--665",

journal = "Journal of Science and Medicine in Sport",

issn = "1440-2440",

publisher = "Elsevier",

number = "7",

}

TY - JOUR

T1 - The effect of load on Achilles tendon structure in novice runners

AU - Heyward, Omar W.

AU - Rabello, Lucas M.

AU - van der Woude, Lucas

AU - van den Akker-Scheek, Inge

AU - Gokeler, Alli

AU - van der Worp, Henk

AU - Zwerver, Johannes

PY - 2018/7

Y1 - 2018/7

N2 - Objectives: To observe the changes in Achilles tendon structure in novice runners, with loading prescriptions of 100% body weight compared to 20% body weight.Design: Randomised crossover.Methods: Twenty novice runners participated in two separate running bouts spaced 14 days apart, one of high load at 100% body weight, and one of low load at 20% body weight. Tendon structure was measured by ultrasonographic tissue characterisation on 6 occasions; immediately prior to each run, 2 and 7 days after each run.Results: The interaction effect of time and condition was not found to be significant for echotypes I-IV [Wald chi-square = 2.8, d.f. = 2, P=0.247; Wald chi-square=2.888, d.f. = 2, P=0.236; Wald chi-square=1.385, d.f. = 2, P=0.5; Wald chi-square=4.19, d.f. = 2, P=0.123], respectively. A significant effect of time was found for echotypes Ill [Wald chi-square=6.785, d.f. = 2, P=0.0.034] and IV [Wald chi-square=7.491, d.f. = 2, P=0.0.024].Conclusions: The decrease in echotypes III and IV suggest that moderate loads can be applied to the Achilles tendon without compromising tendon structure. Low to moderate loads may be beneficial in the management of Achilles tendinopathy. Further studies should focus on protocols with higher loading and/or repetitive loading in athletic populations with and without Achilles tendinopathy to assess any differences in tendon structure. (C) 2017 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.

AB - Objectives: To observe the changes in Achilles tendon structure in novice runners, with loading prescriptions of 100% body weight compared to 20% body weight.Design: Randomised crossover.Methods: Twenty novice runners participated in two separate running bouts spaced 14 days apart, one of high load at 100% body weight, and one of low load at 20% body weight. Tendon structure was measured by ultrasonographic tissue characterisation on 6 occasions; immediately prior to each run, 2 and 7 days after each run.Results: The interaction effect of time and condition was not found to be significant for echotypes I-IV [Wald chi-square = 2.8, d.f. = 2, P=0.247; Wald chi-square=2.888, d.f. = 2, P=0.236; Wald chi-square=1.385, d.f. = 2, P=0.5; Wald chi-square=4.19, d.f. = 2, P=0.123], respectively. A significant effect of time was found for echotypes Ill [Wald chi-square=6.785, d.f. = 2, P=0.0.034] and IV [Wald chi-square=7.491, d.f. = 2, P=0.0.024].Conclusions: The decrease in echotypes III and IV suggest that moderate loads can be applied to the Achilles tendon without compromising tendon structure. Low to moderate loads may be beneficial in the management of Achilles tendinopathy. Further studies should focus on protocols with higher loading and/or repetitive loading in athletic populations with and without Achilles tendinopathy to assess any differences in tendon structure. (C) 2017 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.

KW - Tendinopathy

KW - Achilles tendinopathy

KW - Athletic injuries

KW - Sports medicine

KW - Ultrasonography

KW - Ultrasonographic tissue characterisation

KW - ULTRASOUND TISSUE CHARACTERIZATION

KW - BODY POSITIVE-PRESSURE

KW - GAME LOADS

KW - EXERCISE

KW - QUANTIFICATION

KW - RESPOND

U2 - 10.1016/j.jsams.2017.11.007

DO - 10.1016/j.jsams.2017.11.007

M3 - Article

C2 - 29162331

SN - 1440-2440

VL - 21

SP - 661

EP - 665

JO - Journal of Science and Medicine in Sport

JF - Journal of Science and Medicine in Sport

IS - 7

ER -

The effect of load on Achilles tendon structure in novice runners

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