Achilles tendon loading patterns during barefoot walking and slow running on a treadmill: An ultrasonic propagation study

Measurement of tendon loading patterns during gait is important for understanding the pathogenesis of tendon “overuse” injury. Given that the speed of propagation of ultrasound in tendon is proportional to the applied load, this study used a noninvasive ultrasonic transmission technique to measure a...

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Veröffentlicht in:Scandinavian journal of medicine & science in sports 2015-12, Vol.25 (6), p.868-875
Hauptverfasser: Wulf, M., Wearing, S. C., Hooper, S. L., Smeathers, J. E., Horstmann, T., Brauner, T.
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container_issue 6
container_start_page 868
container_title Scandinavian journal of medicine & science in sports
container_volume 25
creator Wulf, M.
Wearing, S. C.
Hooper, S. L.
Smeathers, J. E.
Horstmann, T.
Brauner, T.
description Measurement of tendon loading patterns during gait is important for understanding the pathogenesis of tendon “overuse” injury. Given that the speed of propagation of ultrasound in tendon is proportional to the applied load, this study used a noninvasive ultrasonic transmission technique to measure axial ultrasonic velocity in the right Achilles tendon of 27 healthy adults (11 females and 16 males; age, 26 ± 9 years; height, 1.73 ± 0.07 m; weight, 70.6 ± 21.2 kg), walking at self‐selected speed (1.1 ± 0.1 m/s), and running at fixed slow speed (2 m/s) on a treadmill. Synchronous measures of ankle kinematics, spatiotemporal gait parameters, and vertical ground reaction forces were simultaneously measured. Slow running was associated with significantly higher cadence, shorter step length, but greater range of ankle movement, higher magnitude and rate of vertical ground reaction force, and higher ultrasonic velocity in the tendon than walking (P 
doi_str_mv 10.1111/sms.12455
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Slow running was associated with significantly higher cadence, shorter step length, but greater range of ankle movement, higher magnitude and rate of vertical ground reaction force, and higher ultrasonic velocity in the tendon than walking (P &lt; 0.05). Ultrasonic velocity in the Achilles tendon was highly reproducible during walking and slow running (mean within‐subject coefficient of variation &lt; 2%). Ultrasonic maxima (P1, P2) and minima (M1, M2) were significantly higher and occurred earlier in the gait cycle (P1, M1, and M2) during running than walking (P &lt; 0.05). 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E.</creatorcontrib><creatorcontrib>Horstmann, T.</creatorcontrib><creatorcontrib>Brauner, T.</creatorcontrib><title>Achilles tendon loading patterns during barefoot walking and slow running on a treadmill: An ultrasonic propagation study</title><title>Scandinavian journal of medicine &amp; science in sports</title><addtitle>Scand J Med Sci Sports</addtitle><description>Measurement of tendon loading patterns during gait is important for understanding the pathogenesis of tendon “overuse” injury. Given that the speed of propagation of ultrasound in tendon is proportional to the applied load, this study used a noninvasive ultrasonic transmission technique to measure axial ultrasonic velocity in the right Achilles tendon of 27 healthy adults (11 females and 16 males; age, 26 ± 9 years; height, 1.73 ± 0.07 m; weight, 70.6 ± 21.2 kg), walking at self‐selected speed (1.1 ± 0.1 m/s), and running at fixed slow speed (2 m/s) on a treadmill. Synchronous measures of ankle kinematics, spatiotemporal gait parameters, and vertical ground reaction forces were simultaneously measured. Slow running was associated with significantly higher cadence, shorter step length, but greater range of ankle movement, higher magnitude and rate of vertical ground reaction force, and higher ultrasonic velocity in the tendon than walking (P &lt; 0.05). Ultrasonic velocity in the Achilles tendon was highly reproducible during walking and slow running (mean within‐subject coefficient of variation &lt; 2%). Ultrasonic maxima (P1, P2) and minima (M1, M2) were significantly higher and occurred earlier in the gait cycle (P1, M1, and M2) during running than walking (P &lt; 0.05). Slow running was associated with higher and earlier peaks in loading of the Achilles tendon than walking.</description><subject>Achilles Tendon - diagnostic imaging</subject><subject>Achilles Tendon - physiology</subject><subject>Adolescent</subject><subject>Adult</subject><subject>Ankle Joint - diagnostic imaging</subject><subject>Ankle Joint - physiology</subject><subject>Arthrometry, Articular</subject><subject>Biomechanical Phenomena</subject><subject>biomechanics</subject><subject>Female</subject><subject>Gait - physiology</subject><subject>Humans</subject><subject>locomotion</subject><subject>Male</subject><subject>Running - physiology</subject><subject>soft tissue</subject><subject>speed of sound</subject><subject>Stress, Physiological</subject><subject>ultrasonic transmission</subject><subject>Ultrasonic Waves</subject><subject>Ultrasonography</subject><subject>Ultrasound</subject><subject>Walking - physiology</subject><subject>Weight-Bearing - physiology</subject><subject>Young Adult</subject><issn>0905-7188</issn><issn>1600-0838</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkUFv1DAQhS0EokvhwB9APnJJ67Ez64TbqqKl0i4IFgQ3y4mdYuo4W9vRsv--Sbf0zFw8M_7ek-VHyFtgZzDVeerTGfAS8RlZwJKxglWiek4WrGZYSKiqE_IqpT-MgaxLfElOONYgBC8X5LBqfzvvbaLZBjME6gdtXLihO52zjSFRM8Z5bnS03TBkutf-dl7oYGjyw57GMYR5MYk1zdFq00-OH-gq0NHnqNMQXEt3cdjpG53dhKU8msNr8qLTPtk3j-cp-XH58fvFp2L95er6YrUuXMklFm2zbDoJLRjERkrDG8a6CiWUolx2NYeuqhBZK6DWGsHwzta1lLY0DYeGoTgl74--0wvuRpuy6l1qrfc62GFMCiQCZ8jq_0EFCi4Zn9F3j-jY9NaoXXS9jgf172cn4PwI7J23h6d7YGqOTE2RqYfI1HazfWgmRXFUuJTt3yeFjrdqKYVE9fPzlfr1bXO5rdZf1UbcA23UmQQ</recordid><startdate>201512</startdate><enddate>201512</enddate><creator>Wulf, M.</creator><creator>Wearing, S. 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Ultrasonic maxima (P1, P2) and minima (M1, M2) were significantly higher and occurred earlier in the gait cycle (P1, M1, and M2) during running than walking (P &lt; 0.05). Slow running was associated with higher and earlier peaks in loading of the Achilles tendon than walking.</abstract><cop>Denmark</cop><pub>Blackwell Publishing Ltd</pub><pmid>25913324</pmid><doi>10.1111/sms.12455</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record>
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subjects Achilles Tendon - diagnostic imaging
Achilles Tendon - physiology
Adolescent
Adult
Ankle Joint - diagnostic imaging
Ankle Joint - physiology
Arthrometry, Articular
Biomechanical Phenomena
biomechanics
Female
Gait - physiology
Humans
locomotion
Male
Running - physiology
soft tissue
speed of sound
Stress, Physiological
ultrasonic transmission
Ultrasonic Waves
Ultrasonography
Ultrasound
Walking - physiology
Weight-Bearing - physiology
Young Adult
title Achilles tendon loading patterns during barefoot walking and slow running on a treadmill: An ultrasonic propagation study
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