The influence of aging on the isometric torque sharing patterns among the plantar flexor muscles

• Autorzy: Oliveira L. F. , Verneque D. , Menegaldo L. L.

Identyfikatory

DOI

10.5277/ABB-00540-2015-03

• Języki publikacji: EN

Abstrakty

EN

Purpose: Physiological cross-sectional area (PCSA) reduction of the triceps surae (TS) muscles during aging suggests a proportional loss of torque among its components: soleus, medial and lateral gastrocnemii. However, direct measurements of muscle forces in vivo are not feasible. The purpose of this paper was to compare, between older and young women, isometric ankle joint torque sharing patterns among TS muscles and tibialis anterior (TA). Methods: An EMG-driven model was used for estimating individual muscle torque contributions to the total plantar flexor torque, during sustained contractions of 10% and 40% of maximum voluntary contraction (MVC). Results: Relative individual muscle contributions to the total plantar flexion torque were similar between older and young women groups, for both intensities, increasing from LG, MG to SOL. Muscle strength (muscle torque/body mass) was significantly greater for all TS components in 40% MVC contractions. Increased TA activation was observed in 10% of MVC for older people. Conclusions: Despite the reduced maximum isometric torque and muscle strength, the results suggest small variations of ankle muscle synergies during the aging process.

Słowa kluczowe

EN

aging; triceps surae; plantar flexion; EMG; torque sharing

PL

starzenie się; EMG; zgięcie podeszwowe; mięsień trójgłowy łydki

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Acta of Bioengineering and Biomechanics
• Rocznik: 2017
• Tom: Vol. 19, no. 1
• Strony: 41--45
• Opis fizyczny: Bibliogr. 11 poz., tab., wykr.

Twórcy

autor

Oliveira L. F.

• Federal University of Rio de Janeiro, Rio de Janeiro, Brazil

autor

Verneque D.

• Federal University of Rio de Janeiro, Rio de Janeiro, Brazil

autor

Menegaldo L. L.

• Federal University of Rio de Janeiro, Rio de Janeiro, Brazil

Bibliografia

• [1] DE OLIVEIRA L.F., MENEGALDO L.L., Input error analysis of an EMG-driven muscle model of the plantar flexors, Acta of Bioengineering and Biomechanics, 2012, 14(3), 75–81.
• [2] LANZA R., TOWSE T., CALDWELL G., WIGMORE D., KENT-BRAUN J., Effects of age on human muscle torque, velocity, and power in two muscle groups, J. Appl. Physiol., 2003, 95, 2361–2369.
• [3] MAGNUSSON S., BEYER N., ABRAHAMSEN H., Increased crosssectional area and reduced tensile stress of the Achilles tendon in elderly compared with young women, Journal of Gerontology, 2003, 58(A), 123–127
• [4] MENEGALDO L.L., OLIVEIRA L.F., MINATO K., EMG-FE an open-source graphical user interface for estimating muscle forces in the lower limb using an EMG-driven model, Journal of Biomedical Engineering OnLine, 2014, 13, 37–49.
• [5] MENEGALDO L.L., OLIVEIRA L.F., Effect of muscle model parameter scaling for isometric plantar flexion torque prediction, Journal of Biomechanics, 2009, 42, 2597–2601.
• [6] MORSE C., THOM J., BIRCH K., NARICI M., Changes in triceps surae muscle architecture with sarcopenia, Acta Physiol. Scand., 2005, 183, 291–298.
• [7] MORSE C., THOM J., REEVES N., In vivo physiological crosssectional area and specific force are reduced in the gastrocnemius of elderly men, J. Appl. Physiol., 2005, 99, 1050–1055.
• [8] NAGAI K., YAMADA M., UEMUDA K., Differences in muscle coactivation during postural control between healthy older and young adults, Archives of Gerontology and Geriatrics, 2011, 53, 338–343.
• [9] REEVES N., NARICI M., MAGANARIS C., Myotendinous plasticity to aging and resistance exercise in humans, Exp. Physiol., 2005, 91, 483–498.
• [10] SIMONEAU E., MARTIN A., VAN HOECKE J., Muscular performance at the ankle joint in young and elderly men, Journal of Gerontology, 2005, 60A, 439–447.
• [11] TRACY B., Force control is impaired in the ankle plantarflexors of elderly adults, EUR. J. Appl. Physiol., 2007, 101, 629–636.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).