Trial reportJournal of applied physiology (Bethesda, Md. : 1985)2015
Depth-dependent variations in Achilles tendon deformations with age are associated with reduced plantarflexor performance during walking.
Trial report in Journal of applied physiology (Bethesda, Md. : 1985), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
29 citing papers in PubMed, 60 citations in OpenAlex.
- Triceps surae muscle-subtendon interaction differs between young and older adults.Connective tissue research · 2020Trial
- A Novel Measurement of Altered Achilles Subtendon Load Sharing 6-12 Months Following Rupture.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2026Article
- High horizontal force and lateral force transmission induced by the twist of the Achilles tendon.Frontiers in bioengineering and biotechnology · 2026Article
- AnkleImage - An ultrafast ultrasound image dataset to understand the ankle joint muscle contractility.Scientific data · 2024Article
- Triboelectric micro-flexure-sensitive fiber electronics.Nature communications · 2024Article
- 3D characterization of the triple-bundle Achilles tendon from in vivo high-field MRI.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2023Article
- In Vivo Strain Patterns in the Achilles Tendon During Dynamic Activities: A Comprehensive Survey of the Literature.Sports medicine - open · 2023Review
- Reduced Achilles Tendon Stiffness Disrupts Calf Muscle Neuromechanics in Elderly Gait.Gerontology · 2022Review
- Age-related changes to triceps surae muscle-subtendon interaction dynamics during walking.Scientific reports · 2021Article
- Age-related differences in calf muscle recruitment strategies in the time-frequency domain during walking as a function of task demand.Journal of applied physiology (Bethesda, Md. : 1985) · 2021Article
- The effects of triceps surae muscle stimulation on localized Achilles subtendon tissue displacements.The Journal of experimental biology · 2021Article
- Individual variation in Achilles tendon morphology and geometry changes susceptibility to injury.eLife · 2021Article
- Editorial: Tendon Structure-Function Relationship in Health, Ageing, and Injury.Frontiers in sports and active living · 2021Article
- Achilles tendon loading is lower in older adults than young adults across a broad range of walking speeds.Experimental gerontology · 2020Article
- Achilles Tendon Morphology Is Related to Triceps Surae Muscle Size and Peak Plantarflexion Torques During Walking in Young but Not Older Adults.Frontiers in sports and active living · 2020Article
- Force Transmission Between the Gastrocnemius and Soleus Sub-Tendons of the Achilles Tendon in Rat.Frontiers in bioengineering and biotechnology · 2020Article
- Biplanar ultrasound investigation ofTranslational sports medicine · 2019Article
- Non-uniformity in the healthy patellar tendon is greater in males and similar in different age groups.Journal of biomechanics · 2018Article
- Aging effects on the Achilles tendon moment arm during walking.Journal of biomechanics · 2018Article
- Aging effects on leg joint variability during walking with balance perturbations.Gait & posture · 2018Article
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
Abstract
The anatomical arrangement of the Achilles tendon (AT), with distinct fascicle bundles arising from the gastrocnemius and soleus muscles, may facilitate relatively independent behavior of the triceps surae muscles. A reduced capacity for sliding between adjacent tendon fascicles with age may couple gastrocnemius and soleus muscle behavior, thereby potentially contributing to diminished plantarflexor performance commonly observed in old adults. Nine healthy young (mean age, 23.9 yr) and eight healthy old (69.9 yr) adults walked at three speeds (0.75, 1.00, and 1.25 m/s) on a force-sensing treadmill. We coupled dynamic ultrasound imaging of the free AT with motion capture and inverse dynamic analyses to compute, in part: 1) depth-dependent variations in AT tissue displacements and elongations and 2) net ankle joint kinetics during push-off. The difference in displacements between superficial and deep AT regions, and in their corresponding elongations, did not differ between old and young adults at the slower two walking speeds (P > 0.61). However, old adults walked with 41% smaller depth-dependent variations in free AT displacements and elongations at 1.25 m/s (P = 0.02). These more uniform tendon deformations in old adults most strongly correlated with reduced peak ankle moment (R(2) = 0.40), but also significantly correlated with reduced peak power generation (R(2) = 0.15) and positive ankle work during push-off (R(2) = 0.19) (P > 0.01). Our findings: 1) demonstrate a potential role for nonuniform AT deformations in governing gastrocnemius and soleus muscle-tendon function and 2) allude to altered tendon behavior that may contribute to the age-related reduction in plantarflexor performance during walking.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.