Aging and the effects of a half marathon on Achilles tendon force–elongation relationship

Ackermans, Thijs; Epro, Gaspar; McCrum, Christopher; Oberländer, Kai Daniel; Suhr, Frank; Drost, Maarten R.; Meijer, Kenneth; Karamanidis, Kiros

doi:10.1007/s00421-016-3482-z

Cited by 31 publications

(69 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Ackermans et al ()) observed that half marathon time was 16% longer in middle‐aged than younger people, with an average slower running velocity. Regarding muscle strength, there were statistically significant ( P < 0.05) age and time point effects on maximal isometric ankle plantar flexion joint moments, with lower values for the middle‐aged than the younger runners.…”

Section: Discussionmentioning

confidence: 99%

“…The anatomy of the AT has a considerable effect on sports performance, particularly in the aging population (Ackermans et al, ; Epro et al, ; Pardes et al, ). Increased passive stiffness and decreased range of motion are hallmark features of aging joints, including the ankle (Pardes et al, ).…”

Section: Discussionmentioning

confidence: 99%

“…The tendon increases its compliance with increasing age, which results in decreased tensile force, leading to increased susceptibility to injury (Pardes et al, ). Furthermore, the AT is less capable of resisting long‐lasting cyclic mechanical loading in older adults (Ackermans et al, ; Epro et al, ; Pardes et al, ). It has been estimated that the triceps surae muscles generate approximately 70–80% of the mechanical power expended during push‐off movement during gait (Franz and Thelen, ).…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

The influence of aging on the insertion of the Achilles tendon: A magnetic resonance study

et al. 2019

View full text Add to dashboard Cite

The aim of this study was to examine the variations of the Achilles tendon (AT) insertion point into the calcaneal bone (CB) in relation to age and sex using magnetic resonance imaging (MRI). A total of 202 foot and ankle MRIs were reviewed and patients were allocated into three age groups: (I) <18, (II) 18-65, and (III) >65 years. All measurements were obtained on a mid-sagittal scan. The mean measurement values were used to assess the relationships among the AT insertion point, sex, and age. Our main findings revealed that (1) the distance between the most inferior point of the CB and the most inferior part of the AT insertion into the CB increases with age, (2) the height of the AT insertion into the posterior aspect of the CB decreases with age, and (3) the length of the AT insertion into the posterior aspect of the CB decreases with age. The terminal insertion point of the ATon the CB in younger subjects was more distal, whereas in older individuals it was more proximal. These results could help in developing novel strategies for the treatment and prophylaxis of AT injuries in particular patient age groups. Anatomical data about the AT insertion are crucial for developing a computer model of the ATand for biomechanical considerations regarding this tendon. Clin. Anat. 33:545-551, 2020.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

The influence of aging on the insertion of the Achilles tendon: A magnetic resonance study

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Several animal studies have reported a relationship between age and tendon mechanical properties, suggesting that tendon mechanical properties decline with increasing age [32][33][34] . In humans, age has further been reported to change the mechanical properties of healthy tendons in response to loading 35 . In the present study, age was found to be inversely related to shear modulus only in ruptured tendons.…”

Section: Discussionmentioning

confidence: 99%

Side-to-side differences in Achilles tendon geometry and mechanical properties following achilles tendon rupture

Zellers

Cortés

Corrigan

et al. 2017

MLTJ

View full text Add to dashboard Cite

SummaryBackground: Recovery of tendon structure has been suggested to play a role in clinical success following Achilles tendon rupture. The purpose of this study was to identify side-to-side differences in tendon geometry and mechanical properties following Achilles tendon rupture and investigate the relationship of tendon structure with clinical outcomes. Methods: Participants within 1 year post complete rupture were included. Tendon geometry and mechanical properties were quantified using B-mode ultrasound imaging and continuous shear wave elastography (cSWE). Clinical outcomes included the heel-rise test. Participant self-reported function was measured using the Achilles tendon Total Rupture Score, Foot and Ankle Outcome Score -quality of life subscale, and the Physical Activity

show abstract

“…One method that may negate such loading rate effects is to instead use isometric contractions held at multiple given submaximal force levels. This contraction method has recently been used in different forms to assess AT mechanical properties (Farris et al, 2013;Lichtwark et al, 2013;Ackermans et al, 2016;Obst et al, 2016), but the method's effects on loading rate dependency have not been investigated.…”

Section: Introductionmentioning

confidence: 99%

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

McCrum

Oberländer

Epro

et al. 2017

Clin Physio Funct Imaging

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Aging and the effects of a half marathon on Achilles tendon force–elongation relationship

Cited by 31 publications

References 34 publications

The influence of aging on the insertion of the Achilles tendon: A magnetic resonance study

The influence of aging on the insertion of the Achilles tendon: A magnetic resonance study

Side-to-side differences in Achilles tendon geometry and mechanical properties following achilles tendon rupture

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

Contact Info

Product

Resources

About