Alterations in Leg Extensor Muscle-Tendon Unit Biomechanical Properties With Ageing and Mechanical Loading.

Journal article

McCrum, C, Leow, P, Epro, G, König, M, Meijer, K and Karamanidis, K (2018). Alterations in Leg Extensor Muscle-Tendon Unit Biomechanical Properties With Ageing and Mechanical Loading. Frontiers in physiology. 9, p. 150. https://doi.org/10.3389/fphys.2018.00150
AuthorsMcCrum, C, Leow, P, Epro, G, König, M, Meijer, K and Karamanidis, K
Abstract

Tendons transfer forces produced by muscle to the skeletal system and can therefore have a large influence on movement effectiveness and safety. Tendons are mechanosensitive, meaning that they adapt their material, morphological and hence their mechanical properties in response to mechanical loading. Therefore, unloading due to immobilization or inactivity could lead to changes in tendon mechanical properties. Additionally, ageing may influence tendon biomechanical properties directly, as a result of biological changes in the tendon, and indirectly, due to reduced muscle strength and physical activity. This review aimed to examine age-related differences in human leg extensor (triceps surae and quadriceps femoris) muscle-tendon unit biomechanical properties. Additionally, this review aimed to assess if, and to what extent mechanical loading interventions could counteract these changes in older adults. There appear to be consistent reductions in human triceps surae and quadriceps femoris muscle strength, accompanied by similar reductions in tendon stiffness and elastic modulus with ageing, whereas the effect on tendon cross sectional area is unclear. Therefore, the observed age-related changes in tendon stiffness are predominantly due to changes in tendon material rather than size with age. However, human tendons appear to retain their mechanosensitivity with age, as intervention studies report alterations in tendon biomechanical properties in older adults of similar magnitudes to younger adults over 12-14 weeks of training. Interventions should implement tendon strains corresponding to high mechanical loads (i.e., 80-90% MVC) with repetitive loading for up to 3-4 months to successfully counteract age-related changes in leg extensor muscle-tendon unit biomechanical properties.

CM was funded by the Kootstra Talent Fellowship awarded by the Centre for Research Innovation, Support and Policy (CRISP) and by the NUTRIM Graduate Programme, both of Maastricht University Medical Center+. MK was supported by the German Social Accident Insurance (Deutsche Gesetzliche Unfallversicherung, Postgraduate Scholarship).

KeywordsAchilles tendon; aged; bed rest; locomotion; patellar tendon; quadriceps femoris; resistance training; triceps surae
Year2018
JournalFrontiers in physiology
Journal citation9, p. 150
PublisherFrontiers Media
ISSN1664-042X
Digital Object Identifier (DOI)https://doi.org/10.3389/fphys.2018.00150
Funder/ClientDeutsche Gesetzliche Unfallversicherung
Maastricht Universitair Medisch Centrum
Maastricht Universitair Medisch Centrum
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Print28 Feb 2018
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Deposited01 May 2018
Accepted13 Feb 2018
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Muscle-tendon adaptation monitoring in elite athletes: Preliminary results from a longitudinal investigation
Epro, G, Koenig, M, McCrum, C, Baedorf, M, Schade, F and Karamanidis, K (2017). Muscle-tendon adaptation monitoring in elite athletes: Preliminary results from a longitudinal investigation. 35th Conference of the International Society of Biomechanics in Sport. Cologne, Germany 14 - 18 Jun 2017
Loading rate and contraction type effects on the human Achilles tendon force-elongation relationship
McCrum, C, Oberländer, KD, Epro, G, Krauss, P, Reeves, N and Karamanidis, K (2017). Loading rate and contraction type effects on the human Achilles tendon force-elongation relationship. 22nd Annual Congress of the European College of Sport Science. Essen, Germany 05 - 08 Jul 2017
Monitoring muscle-tendon adaptation in elite athletes: Preliminary data from a 1-year longitudinal investigation
Koenig, M, Epro, G, McCrum, C, Bädorf, M, Schade, F and Karamanidis, K (2017). Monitoring muscle-tendon adaptation in elite athletes: Preliminary data from a 1-year longitudinal investigation. 22nd annual Congress of the European College of Sport Science (ECSS). Essen 05 - 08 Jul 2017
Achilles tendon mechanosensitivity is preserved in old age: In vivo evidence from a 1.5 years long resistance training intervention
Epro, G, Mierau, A, Doerner, J, Luetkens, J, Scheef, L, Kukuk, G, Boecker, H, Maganaris, C, Brüggemann, G-P and Karamanidis, K (2017). Achilles tendon mechanosensitivity is preserved in old age: In vivo evidence from a 1.5 years long resistance training intervention. 22nd annual Congress of the European College of Sport Science. Essen, Germany 05 - 08 Jul 2017
Loading rate and contraction duration effects on in vivo human Achilles tendon mechanical properties.
McCrum, C, Oberländer, KD, Epro, G, Krauss, P, James, DC, Reeves, N and Karamanidis, K (2017). Loading rate and contraction duration effects on in vivo human Achilles tendon mechanical properties. Clinical Physiology and Functional Imaging. 38 (3), pp. 517-523. https://doi.org/10.1111/cpf.12472
Locomotor stability and adaptation during perturbed walking across the adult female lifespan.
McCrum, C, Epro, G, Meijer, K, Zijlstra, W, Brüggemann, G-P and Karamanidis, K (2016). Locomotor stability and adaptation during perturbed walking across the adult female lifespan. Journal of Biomechanics. 49 (7), pp. 1244-1247. https://doi.org/10.1016/j.jbiomech.2016.02.051
Use of a Lucas-Kanade-Based Template Tracking Algorithm to Examine In Vivo Tendon Excursion during Voluntary Contraction Using Ultrasonography.
Karamanidis, K, Travlou, A, Krauss, P and Jaekel, U (2016). Use of a Lucas-Kanade-Based Template Tracking Algorithm to Examine In Vivo Tendon Excursion during Voluntary Contraction Using Ultrasonography. Ultrasound in Medicine and Biology. 42 (7), pp. 1689-1700. https://doi.org/10.1016/j.ultrasmedbio.2016.02.019
Visual and proprioceptive contributions to postural control of upright stance in unilateral vestibulopathy.
Eysel-Gosepath, K, McCrum, C, Epro, G, Brüggemann, G-P and Karamanidis, K (2016). Visual and proprioceptive contributions to postural control of upright stance in unilateral vestibulopathy. Somatosensory and Motor Research. 33 (2), pp. 72-78. https://doi.org/10.1080/08990220.2016.1178635
Matching participants for triceps surae mechanical properties eliminates age-related differences in drop jump performance
Koenig, M, Hemmers, S, McCrum, C, Epro, G, Ackermans, TMA, Hartmann, U and Karamanidis, K (2016). Matching participants for triceps surae mechanical properties eliminates age-related differences in drop jump performance. 11th Joint Conference on Motor Control & Learning, Biomechanics & Training of the German Society of Sports Sciences. Darmstadt, Germany 28 - 30 Sep 2016
Aging and the effects of a half marathon on Achilles tendon force-elongation relationship.
Ackermans, TMA, Epro, G, McCrum, C, Oberländer, KD, Suhr, F, Drost, MR, Meijer, K and Karamanidis, K (2016). Aging and the effects of a half marathon on Achilles tendon force-elongation relationship. European Journal of Applied Physiology. 116 (11-12), pp. 2281-2292. https://doi.org/10.1007/s00421-016-3482-z
Age-related differences in drop jump performance are eliminated when triceps surae mechanical properties are matched
Koenig, M, Hemmers, S, McCrum, C, Epro, G, Ackermans, TMA, Hartmann, U and Karamanidis, K (2016). Age-related differences in drop jump performance are eliminated when triceps surae mechanical properties are matched. Dutch Society for Movement Sciences (VvBN) PhD Day 2016. Maastricht 09 - 09 Nov 2016
Effect of exercise-induced enhancement of the leg-extensor muscle-tendon unit capacities on ambulatory mechanics and knee osteoarthritis markers in the elderly.
Karamanidis, K, Oberländer, KD, Niehoff, A, Epro, G and Brüggemann, G-P (2014). Effect of exercise-induced enhancement of the leg-extensor muscle-tendon unit capacities on ambulatory mechanics and knee osteoarthritis markers in the elderly. PLoS ONE. 9 (6). https://doi.org/10.1371/journal.pone.0099330