scholarly journals Simplified Triceps Surae Muscle Volume Assessment in Older Adults

2019 ◽  
Vol 10 ◽  
Author(s):  
Kiros Karamanidis ◽  
Gaspar Epro ◽  
Matthias König ◽  
Falk Mersmann ◽  
Adamantios Arampatzis
Keyword(s):  
Older Adults ◽  
Muscle Volume ◽  
Triceps Surae ◽  
Triceps Surae Muscle ◽  
Volume Assessment

scholarly journals Older Adults Overcome Reduced Triceps Surae Structural Stiffness to Preserve Ankle Joint Quasi-Stiffness During Walking

2020 ◽  
Vol 36 (4) ◽  
pp. 209-216
Author(s):  
Rebecca L. Krupenevich ◽  
William H. Clark ◽  
Gregory S. Sawicki ◽  
Jason R. Franz
Keyword(s):  
Older Adults ◽  
Young Adults ◽  
Achilles Tendon ◽  
Ankle Joint ◽  
Muscle Activation ◽  
Muscle Stiffness ◽  
Triceps Surae ◽  
Triceps Surae Muscle ◽  
Age Related ◽  
Lower Ankle Joint

Ankle joint quasi-stiffness is an aggregate measure of the interaction between triceps surae muscle stiffness and Achilles tendon stiffness. This interaction may be altered due to age-related changes in the structural properties and functional behavior of the Achilles tendon and triceps surae muscles. The authors hypothesized that, due to a more compliant of Achilles’ tendon, older adults would exhibit lower ankle joint quasi-stiffness than young adults during walking and during isolated contractions at matched triceps surae muscle activations. The authors also hypothesized that, independent of age, triceps surae muscle stiffness and ankle joint quasi-stiffness would increase with triceps surae muscle activation. The authors used conventional gait analysis in one experiment and, in another, electromyographic biofeedback and in vivo ultrasound imaging applied during isolated contractions. The authors found no difference in ankle joint quasi-stiffness between young and older adults during walking. Conversely, this study found that (1) young and older adults modulated ankle joint quasi-stiffness via activation-dependent changes in triceps surae muscle length–tension behavior and (2) at matched activation, older adults exhibited lower ankle joint quasi-stiffness than young adults. Despite age-related reductions during isolated contractions, ankle joint quasi-stiffness was maintained in older adults during walking, which may be governed via activation-mediated increases in muscle stiffness.

scholarly journals Achilles Tendon Morphology Is Related to Triceps Surae Muscle Size and Peak Plantarflexion Torques During Walking in Young but Not Older Adults

2020 ◽  
Vol 2 ◽  
Author(s):  
Katherine R. Knaus ◽  
Anahid Ebrahimi ◽  
Jack A. Martin ◽  
Isaac F. Loegering ◽  
Darryl G. Thelen ◽  
...  
Keyword(s):  
Older Adults ◽  
Achilles Tendon ◽  
Triceps Surae ◽  
Muscle Size ◽  
Triceps Surae Muscle

scholarly journals Bilateral triceps surae muscle focal myositis after a cauda equina syndrome

2021 ◽  
Author(s):  
G.R. González Toledo ◽  
H. Pérez Pérez ◽  
L. Brage Martín ◽  
V. Castro López-Tarruella
Keyword(s):  
Cauda Equina Syndrome ◽  
Cauda Equina ◽  
Triceps Surae ◽  
Triceps Surae Muscle

scholarly journals Muscles adaptation to aging and training: architectural changes – a randomised trial

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Adrien J. Létocart ◽  
Franck Mabesoone ◽  
Fabrice Charleux ◽  
Christian Couppé ◽  
René B. Svensson ◽  
...  
Keyword(s):  
Resistance Training ◽  
Young Men ◽  
Cross Sectional Area ◽  
Muscle Volume ◽  
Triceps Surae ◽  
Moderate Intensity ◽  
Training Volume ◽  
Sectional Area ◽  
Cross Sectional ◽  
Repetition Maximum

Abstract Background To investigate how anatomical cross-sectional area and volume of quadriceps and triceps surae muscles were affected by ageing, and by resistance training in older and younger men, in vivo. Methods The old participants were randomly assigned to moderate (O55, n = 13) or high-load (O80, n = 14) resistance training intervention (12 weeks; 3 times/week) corresponding to 55% or 80% of one repetition maximum, respectively. Young men (Y55, n = 11) were assigned to the moderate-intensity strengthening exercise program. Each group received the exact same training volume on triceps surae and quadriceps group (Reps x Sets x Intensity). The fitting polynomial regression equations for each of anatomical cross-sectional area-muscle length curves were used to calculate muscle volume (contractile content) before and after 12 weeks using magnetic resonance imaging scans. Results Only Rectus femoris and medial gastrocnemius muscle showed a higher relative anatomical cross-sectional area in the young than the elderly on the proximal end. The old group displayed a higher absolute volume of non-contractile material than young men in triceps surae (+ 96%). After training, Y55, O55 and O80 showed an increase in total quadriceps (+ 4.3%; + 6.7%; 4.2% respectively) and triceps surae (+ 2.8%; + 7.5%; 4.3% respectively) volume. O55 demonstrated a greater increase on average gains compared to Y55, while no difference between O55 and O80 was observed. Conclusions Muscle loss with aging is region-specific for some muscles and uniform for others. Equivalent strength training volume at moderate or high intensities increased muscle volume with no differences in muscle volume gains for old men. These data suggest that physical exercise at moderate intensity (55 to 60% of one repetition maximum) can reverse the aging related loss of muscle mass. Trial registration NCT03079180 in ClinicalTrials.gov. Registration date: March 14, 2017.

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