Age-related increase in muscle stiffness is muscle length dependent and associated with muscle force in senior females

J Xu, SN Fu, F Hug - BMC Musculoskeletal Disorders, 2021 - Springer
Background In aging, muscle stiffness is considered as one of the factors associated with the
reduction of force generation capability. There have been inconsistent findings on age …

Predicting myosin heavy chain isoform from postdissection fiber length in human skeletal muscle fibers

GE Privett, AW Ricci… - American Journal of …, 2024 - journals.physiology.org
Experimental techniques in single human skeletal muscle cells require manual dissection.
Unlike other mammalian species, human skeletal muscle is characterized by a …

Age-related changes in human single muscle fibre passive elastic properties are sarcomere length dependent

AM Noonan, N Mazara, DP Zwambag… - Experimental …, 2020 - Elsevier
Purpose Studies have revealed an age-related decrease in the ability to produce force as
well as an increase in the contractile stiffness and passive stress of single muscle fibres …

Training induced changes to skeletal muscle passive properties are evident in both single fibers and fiber bundles in the rat hindlimb

AM Noonan, P Mashouri, J Chen, GA Power… - Frontiers in …, 2020 - frontiersin.org
Introduction: The passive mechanical behavior of skeletal muscle represents both important
and generally underappreciated biomechanical properties with little attention paid to their …

Larger muscle fibers and fiber bundles manifest smaller elastic modulus in paraspinal muscles of rats and humans

M Malakoutian, M Theret, S Yamamoto… - Scientific Reports, 2021 - nature.com
The passive elastic modulus of muscle fiber appears to be size-dependent. The objectives of
this study were to determine whether this size effect was evident in the mechanical testing of …

Excess Intramyocellular Lipid Does Not Affect Muscle Fiber Biophysical Properties in Mice or People with Metabolically Abnormal Obesity

KC Shen, KH Collins, JLA Ferey, A Fappi… - Diabetes, 2024 - Am Diabetes Assoc
Observational studies show correlations between intramyocellular lipid (IMCL) content and
muscle strength and contractile function in people with “metabolically abnormal” obesity …

Assumptions about the cross-sectional shape of skinned muscle fibers can distort the relationship between muscle force and cross-sectional area

IC Smith, W Herzog - Journal of Applied Physiology, 2023 - journals.physiology.org
Comparisons of muscle force output are often performed after normalization to muscle
physiological cross-sectional area (CSA). Differences in force per CSA (ie, specific force) …

Active Heat Acclimation Does Not Alter Muscle–Tendon Unit Properties

A Mornas, F Brocherie, G Guilhem… - … and Science in …, 2023 - insep.hal.science
Purpose Heat acclimation (HA) is recommended before competing in hot and humid
conditions. HA has also been recently suggested to increase muscle strength, but its effects …

Examining Mechanisms of Altered Skeletal Muscle Cellular Passive Mechanics in the Context of Acute Fatigue and Age

GE Privett - 2024 - search.proquest.com
Skeletal muscle stiffness influences locomotor function and may predict soft-tissue injury
risk. Recent literature suggests fatiguing exercise transiently reduces whole skeletal muscle …

Biomechanical properties of paraspinal muscles and their influence on spinal loading: an experimental and computational investigation

M Malakoutian - 2021 - open.library.ubc.ca
Adult spinal deformity (ASD) is prevalent among~ 30% of the population above 65 years old.
While decreased back extensor strength in the form of muscle weakness/dysfunction is well …