Stability-normalised walking speed: A new approach for human gait perturbation research

Journal article

McCrum, C, Willems, P, Karamanidis, K and Meijer, K (2019). Stability-normalised walking speed: A new approach for human gait perturbation research. Journal of Biomechanics. 87, pp. 48-53. https://doi.org/10.1016/j.jbiomech.2019.02.016
AuthorsMcCrum, C, Willems, P, Karamanidis, K and Meijer, K
Abstract

© 2019 In gait stability research, neither self-selected walking speeds, nor the same prescribed walking speed for all participants, guarantee equivalent gait stability among participants. Furthermore, these options may differentially affect the response to different gait perturbations, which is problematic when comparing groups with different capacities. We present a method for decreasing inter-individual differences in gait stability by adjusting walking speed to equivalent margins of stability (MoS). Eighteen healthy adults walked on a split-belt treadmill for two-minute bouts at 0.4 m/s up to 1.8 m/s in 0.2 m/s intervals. The stability-normalised walking speed (MoS = 0.05 m) was calculated using the mean MoS at touchdown of the final 10 steps of each speed. Participants then walked for three minutes at this speed and were subsequently exposed to a treadmill belt acceleration perturbation. A further 12 healthy adults were exposed to the same perturbation while walking at 1.3 m/s: the average of the previous group. Large ranges in MoS were observed during the prescribed speeds (6–10 cm across speeds) and walking speed significantly (P < 0.001) affected MoS. The stability-normalised walking speeds resulted in MoS equal or very close to the desired 0.05 m and reduced between-participant variability in MoS. The second group of participants walking at 1.3 m/s had greater inter-individual variation in MoS during both unperturbed and perturbed walking compared to 12 sex, height and leg length-matched participants from the stability-normalised walking speed group. The current method decreases inter-individual differences in gait stability which may benefit gait perturbation and stability research, in particular studies on populations with different locomotor capacities. [Preprint: https://doi.org/10.1101/314757]

KeywordsDynamic stability; Falls; Locomotion; Margins of stability; Motor control; Postural balance
Year2019
JournalJournal of Biomechanics
Journal citation87, pp. 48-53
PublisherElsevier
ISSN0021-9290
Digital Object Identifier (DOI)https://doi.org/10.1016/j.jbiomech.2019.02.016
Web address (URL)https://www.sciencedirect.com/science/article/pii/S0021929019301460?via%3Dihub
Publication dates
Print26 Feb 2019
Publication process dates
Deposited14 Mar 2019
Accepted19 Feb 2019
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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