ArticleJournal of applied physiology (Bethesda, Md. : 1985)2017
Shifting gears: dynamic muscle shape changes and force-velocity behavior in the medial gastrocnemius.
Article in Journal of applied physiology (Bethesda, Md. : 1985), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers, 1 of them a synthesis that pooled it.
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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.
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Who cites it
39 citing papers in PubMed, 1 synthesis or guideline pooled it, 72 citations in OpenAlex.
- The Effects of Pre-conditioning on Exercise-Induced Muscle Damage: A Systematic Review and Meta-analysis.Sports medicine (Auckland, N.Z.) · 2023Pooled it
- Gearing in the human medial gastrocnemius: effects of contraction conditions, tissue stiffness, and echo intensity.European journal of applied physiology · 2026Article
- Gastrocnemius medialis neuromechanics during cycling at various exercise intensities.Scientific reports · 2026Article
- Mechanical control: parallel pathways for modulating movement.The Journal of experimental biology · 2026Review
- Layer-Specific Architecture and Nerve Innervation of the Popliteus Muscle: Neuroanatomical Basis for Precision-Guided Interventions for the Knee Joint.Diagnostics (Basel, Switzerland) · 2026Article
- Neuromuscular mechanisms for the fast decline in rate of force development with muscle disuse - a narrative review.The Journal of physiology · 2026Review
- Efficient elastic tissue motions indicate general motor skill.Scientific reports · 2025Article
- Landmark-free statistical shape modelling reveals effects of age and sex on whole muscle morphology among the triceps surae.Royal Society open science · 2025Article
- Using physiologically based models to predict in vivo skeletal muscle energetics.The Journal of experimental biology · 2025Article
- Article
- Effects of altered contractile environment on muscle shape change in the human triceps surae.The Journal of experimental biology · 2024Article
- Decoupling of muscle-tendon unit and fascicle velocity contributes to the in vivo stretch-shortening cycle effect in the male human triceps surae muscle.Physiological reports · 2024Article
- Gastrocnemius Neuromuscular Activation During Standing Explosive Acceleration.Life (Basel, Switzerland) · 2024Article
- Impact of contraction intensity and ankle joint angle on calf muscle fascicle length and pennation angle during isometric and dynamic contractions.Scientific reports · 2024Article
- Rethinking the physiological cross-sectional area of skeletal muscle reveals the mechanical advantage of pennation.Royal Society open science · 2024Article
- Human in vivo medial gastrocnemius gear during active and passive muscle lengthening: effect of inconsistent methods and nomenclature on data interpretation.Biology open · 2023Article
- Impairments in muscle shape changes affect metabolic demands duringProceedings. Biological sciences · 2023Article
- What good is a measure of muscle length? The how and why of direct measurements of skeletal muscle motion.Journal of biomechanics · 2023Review
- Application of numerical simulation studies to determine dynamic loads acting on the human masticatory system during unilateral chewing of selected foods.Frontiers in bioengineering and biotechnology · 2023Article
- Rate of force development relationships to muscle architecture and contractile behavior in the human vastus lateralis.Scientific reports · 2022Article
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
Abstract
When muscles contract, they bulge in thickness or in width to maintain a (nearly) constant volume. These dynamic shape changes are tightly linked to the internal constraints placed on individual muscle fibers and play a key functional role in modulating the mechanical performance of skeletal muscle by increasing its range of operating velocities. Yet to date we have a limited understanding of the nature and functional implications of in vivo dynamic muscle shape change under submaximal conditions. This study determined how the in vivo changes in medial gastrocnemius (MG) fascicle velocity, pennation angle, muscle thickness, and subsequent muscle gearing varied as a function of force and velocity. To do this, we obtained recordings of MG tendon length, fascicle length, pennation angle, and thickness using B-mode ultrasound and muscle activation using surface electromyography during cycling at a range of cadences and loads. We found that that increases in contractile force were accompanied by reduced bulging in muscle thickness, reduced increases in pennation angle, and faster fascicle shortening. Although the force and velocity of a muscle contraction are inversely related due to the force-velocity effect, this study has shown how dynamic muscle shape changes are influenced by force and not influenced by velocity.
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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.