Age-related differences in drop jump performance are eliminated when triceps surae mechanical properties are matched

Conference paper

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
AuthorsKoenig, M, Hemmers, S, McCrum, C, Epro, G, Ackermans, TMA, Hartmann, U and Karamanidis, K
TypeConference paper
Abstract

Introduction Age-related declines in locomotion have been related to declines in the triceps surae muscle-tendon unit (MTU) capacities1. We aimed to determine if drop jump height or motor task execution strategy differences existed between young and middle-aged adults, when triceps surae MTU capacities (muscle strength and tendon stiffness) were matched. Methods The triceps surae MTU mechanical properties of 26 younger (20 to 30 years) and 29 middle-aged (50 to 65 years) adults were assessed during isometric voluntary ankle plantarflexion contractions using dynamometry and ultrasonography simultaneously. The 12 young adults with the lowest and the 12 middle-aged adults with the greatest triceps surae muscle strength then completed a series of drop jumps from different heights. Ground contact time, average vertical ground reaction force, average mechanical power and jumping height were determined. Results Younger and middle-aged adults achieved similar jumping heights, independent of the drop jump starting height. Significant age effects were found for ground contact time (p < 0.01) and average vertical ground reaction force during ground contact (p < 0.01), with the middle-aged group showing higher ground contact times but lower forces, reflected in a significant age effect on mechanical power (p < 0.05). Significant (p < 0.05) correlations were found between triceps surae MTU capacities and drop jump height (0.41 ≤ r ≤ 0.81; p < 0.05). Conclusions The results of the current study demonstrate that when triceps surae MTU capacities are matched, young and middle-aged adults show comparable performance of a jumping task, despite different motor strategies. Countering the degeneration of the triceps surae MTU capacities may help to prevent the decline in locomotor function. Finally, the results suggest that neuromuscular factors other than maximum isometric strength and tendon stiffness may influence motor task execution strategy during jumping. References 1. Kulmala et al. (2014) J R Soc Interface, 11, 20140858.

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Accepted30 Sep 2016
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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
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