Article
Biology
Raphael Hamard, Jeroen Aeles, Nicole Y. Kelp, Romain Feigean, Francois Hug, Taylor J. M. Dick
Summary: This study found that during walking, the MG is more activated than the LG, but this does not result in greater shortening of the MG fascicles. In early stance, the MG shows significantly less lengthening compared to the LG, leading to more isometric behavior. This suggests that the MG and LG may have distinct functional roles during locomotion despite being considered as equivalent muscles.
JOURNAL OF EXPERIMENTAL BIOLOGY
(2021)
Article
Physiology
Benjamin Staeudle, Olivier Seynnes, Guido Laps, Gert-Peter Brueggemann, Kirsten Albracht
Summary: Achilles tendon rupture (ATR) can lead to functional limitations, but the remodeled muscle-tendon unit (MTU) has limited impact on walking gait.
FRONTIERS IN PHYSIOLOGY
(2022)
Article
Instruments & Instrumentation
Mattatika Pomrop, Kiyoung Kwak, Seughun Ko, Dongwook Kim
Summary: Research shows that local muscle vibration (LMV) affects muscle behavior and postural stability during stair ascent for the elderly, leading to increased muscle activation and potentially improving muscle efficiency.
SENSORS AND MATERIALS
(2021)
Article
Multidisciplinary Sciences
Amelie Werkhausen, Oyvind Gloersen, Antoine Nordez, Goran Paulsen, Jens Bojsen-Moller, Olivier R. Seynnes
Summary: This study assessed the relationship between muscle architecture and function using ultrasound-based methods. The results showed moderate correlations between different measurements of muscle architecture, but weak correlations between muscle architecture and force or work. These findings indicate the limitations of current approaches to measure muscle architecture in vivo.
Article
Multidisciplinary Sciences
Samantha May, Simon Locke, Michael Kingsley
Summary: The study aimed to investigate the reliability of using ultrasound to measure muscle architecture and determine the minimal detectable change, suggesting that ultrasound measurements of muscle architecture in gastrocnemius muscles are more likely to be useful for detecting population differences than changes following interventions.
Article
Environmental Sciences
Maria Isabel Garcia-Bernal, Paula Gonzalez-Garcia, Pascal Madeleine, Maria Jesus Casuso-Holgado, Alberto Marcos Heredia-Rizo
Summary: The objective of this study was to investigate the changes in muscle tone, stiffness, and thickness in stroke survivors. The study measured these factors using myotonometry and ultrasonography. The results showed that muscle tone and stiffness were higher in the musculotendinous locations compared to the muscle belly locations. There were also differences in muscle tone, stiffness, and thickness between the paretic and nonparetic limbs in stroke patients.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2023)
Article
Multidisciplinary Sciences
Amy N. Adkins, Julius P. A. Dewald, Lindsay P. Garmirian, Christa M. Nelson, Wendy M. Murray
Summary: Muscle architecture is plastic and changes in input or use can alter its structure. Differences in serial sarcomere number and physiological cross-sectional area of the biceps brachii between stroke patients and healthy controls suggest muscle adaptations associated with stroke.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Sport Sciences
Wannes Swinnen, Ine Mylle, Wouter Hoogkamer, Friedl De Groote, Benedicte Vanwanseele
Summary: This study investigated the effects of different stride frequencies on fascicle kinematics and forces of the triceps surae muscle. The results showed that lower stride frequencies led to shorter muscle fascicle lengths and increased demand for muscle force, resulting in higher whole-body energy expenditure. In contrast, higher stride frequencies had less impact on muscle kinematics and force production, suggesting that increased energy expenditure is more related to the cost of leg swing and force production.
SCANDINAVIAN JOURNAL OF MEDICINE & SCIENCE IN SPORTS
(2022)
Article
Chemistry, Multidisciplinary
Vasiliki Gaspari, Gregory C. Bogdanis, Ioli Panidi, Georgia Giannakopoulou, Gerasimos Terzis, Helen Kotsala, Anastasia Donti, Olyvia Donti
Summary: The study showed a positive correlation between the force-time characteristics of ILP and CMJ power, as well as the association of ILP and CMJ with VL muscle thickness and fascicle length, suggesting a relationship between muscle architecture and power generation.
APPLIED SCIENCES-BASEL
(2021)
Article
Physiology
Fearghal P. Behan, Robin Vermeulen, Rod Whiteley, Ryan G. Timmins, Joshua D. Ruddy, David A. Opar
Summary: This study examined the dose-response of the Nordic hamstring exercise (NHE) on biceps femoris long head (BFlh) architecture and eccentric knee flexor strength. The results showed that initial high volumes followed by lower volumes and progressively increasing volumes of NHE training can increase fascicle length and strength, while low volumes of training were insufficient to increase fascicle length but did increase strength.
INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
(2022)
Article
Biology
Andrea Monte, Paola Zamparo
Summary: The uncoupling behaviour between muscle belly and fascicle shortening velocity affects mechanical output and metabolic demands. In this study, compressive multidirectional loads were used to manipulate the muscle's capacity to change in shape, and it was found that metabolic power increased as a function of compression intensity.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2023)
Review
Sport Sciences
Ioli Panidi, Olyvia Donti, Andreas Konrad, Petros C. Dinas, Gerasimos Terzis, Athanasios Mouratidis, Vasiliki Gaspari, Anastasia Donti, Gregory C. Bogdanis
Summary: Static stretching training increases fascicle length at rest and during stretching in healthy participants. High stretching volumes and intensities induce longitudinal fascicle growth, while high stretching intensities result in increased muscle thickness.
SPORTS MEDICINE-OPEN
(2023)
Article
Multidisciplinary Sciences
Tim J. van der Zee, Arthur D. Kuo
Summary: An algorithm for accurately estimating geometric features of pennate muscle from ultrasound images without drift sensitivity was proposed. Experiments on healthy subjects showed that the algorithm outperformed existing algorithms in terms of accuracy and processing speed.
Article
Sport Sciences
Yi-Chung Lin, Marcus G. Pandy
Summary: This study combined a full-body musculoskeletal model with dynamic optimization theory to predict the biomechanics of maximum-speed sprinting and evaluate the effects of changes in muscle-tendon properties on sprint performance. The results showed that sprint performance was most sensitive to changes in muscle strength and least affected by changes in tendon compliance. Additionally, muscle fascicle length had a greater impact on sprint performance compared to muscle intrinsic maximum shortening velocity.
MEDICINE & SCIENCE IN SPORTS & EXERCISE
(2022)
Article
Chemistry, Analytical
Letizia Gionfrida, Richard W. Nuckols, Conor J. Walsh, Robert D. Howe
Summary: In the field of wearable robotics, personalized assistance is important for maximizing benefits. This study introduces and validates a model for extracting muscle fascicle lengths in young and older adults using ultrasound imaging. Despite the impact of age-related muscle loss, the small variation in individual fascicle error suggests that it may be acceptable for generating assistive force profiles.
