Review: muscle-tendon unit coordination in sarcopenia
This review proposes that sarcopenia involves not only muscle but the whole muscle-tendon unit; mismatched remodeling of muscle, tendon and their interface may contribute to strength loss. [1]
Automatic summary · not editorially reviewed
The key findings
In sarcopenia, strength and physical performance decline often more than muscle mass alone would predict, so the review looks beyond muscle to the tissues transmitting force. [1]
Systemic aging processes are described as having tissue-specific and potentially asynchronous effects on muscle, tendon and the myotendinous junction. [1]
Much evidence on tendon and junction remodeling comes from physiological aging and experimental models, while phenotypes in clinically defined sarcopenia remain insufficiently characterized. [1]
The source at a glance
- Study type / format
- Review (abstract)
- Population / context
- People with sarcopenia and aging muscle-tendon tissue as discussed in the review
- Summary based on
- Study abstract
- Original publication
- September 25, 2026
Sarcopenia beyond muscle mass in the review
The review starts from a discrepancy: in sarcopenia, strength and physical performance decline often more than muscle mass alone would predict. The authors therefore look beyond the force-generating muscle to the tissues that transmit and integrate force. They frame sarcopenia through the muscle-tendon unit, which they describe as skeletal muscle, tendon and their specialized interface.
Supporting source [1]
Asynchronous tissue effects and evidence strength
Systemic aging processes such as metabolic dysfunction, inflammaging and vascular insufficiency are described as having tissue-specific and potentially asynchronous effects on muscle contraction, tendon matrix remodeling and the integrity of the myotendinous junction. Because these three components form a serial force-transmission pathway, differential remodeling could create a mismatch between force generation and force transmission. Much evidence on tendon and junction remodeling comes from physiological aging and experimental models; their phenotypes in clinically defined sarcopenia remain insufficiently characterized.
Supporting source [1]
Inter-tissue signaling and proposed framework use
The review weighs evidence for communication between tissues: muscle-to-tendon regulation is described as experimentally supported, whereas tendon-to-muscle effects are called emerging and demonstrated mainly in co-culture, conditioned-medium and engineered-interface systems. The myotendinous junction is highlighted as a specialized interface where mechanical forces, extracellular matrix organization and local signaling converge; age-related disruption there may reduce force-transfer efficiency. The authors suggest the framework could refine exercise prescription, functional phenotyping and evaluation of future tissue-specific interventions, while remaining complementary to established diagnostic criteria and current exercise-based management.
Supporting source [1]
How to interpret this
Abstract only; the full text was not reviewed. The review itself notes that much tendon and myotendinous junction evidence comes from physiological aging and experimental models, and that phenotypes in clinically defined sarcopenia are insufficiently characterized. Tendon-to-muscle effects are described as emerging and shown mainly in co-culture, conditioned-medium and engineered-interface systems. The proposed framework is not a validated diagnostic or treatment tool.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Ta G, Li L, Jing C, Chen X, Jeong SJ, Ryu D, Wei S. · europepmc.org · September 25, 2026