Gymnastik- och idrottshögskolan, GIH

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Publications (10 of 85) Show all publications
Yetman, Q., Arndt, A. & Rainbow, M. (2023). Insights into the energy returning properties of 'super shoes' from a novel, highly accurate, biplanar videoradiography dataset. Footwear Science, 15, S117-S119, Article ID 2199391.
Open this publication in new window or tab >>Insights into the energy returning properties of 'super shoes' from a novel, highly accurate, biplanar videoradiography dataset
2023 (English)In: Footwear Science, ISSN 1942-4280, E-ISSN 1942-4299, Vol. 15, p. S117-S119, article id 2199391Article in journal, Editorial material (Other academic) Published
Place, publisher, year, edition, pages
Routledge, 2023
Keywords
Unified deformable power, biplanar videoradiography, carbon plate footwear, foot power, ankle power, Nike Alphafly, Adidas Adizero
National Category
Sport and Fitness Sciences
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-7766 (URN)10.1080/19424280.2023.2199391 (DOI)001021764100056 ()
Available from: 2023-09-12 Created: 2023-09-12 Last updated: 2023-09-12Bibliographically approved
Lundberg, A. & Arndt, A. (2023). Invasive Techniques for Studying Foot and Ankle Kinematics. In: William R. Ledoux & Scott Telfer (Ed.), Foot and Ankle Biomechanics: (pp. 167-178). Elsevier
Open this publication in new window or tab >>Invasive Techniques for Studying Foot and Ankle Kinematics
2023 (English)In: Foot and Ankle Biomechanics / [ed] William R. Ledoux & Scott Telfer, Elsevier, 2023, p. 167-178Chapter in book (Other academic)
Place, publisher, year, edition, pages
Elsevier, 2023
National Category
Physiology Medical Biotechnology
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-7968 (URN)10.1016/B978-0-12-815449-6.00017-2 (DOI)978-0-12-815449-6 (ISBN)
Available from: 2023-11-30 Created: 2023-11-30 Last updated: 2023-11-30
Liljedahl, J., Arndt, A., Nooijen, C. F. & Bjerkefors, A. (2023). Isometric, dynamic, and manual muscle strength measures and their association with cycling performance in elite para-cyclists.. American Journal of Physical Medicine & Rehabilitation, 102(5), 461-467
Open this publication in new window or tab >>Isometric, dynamic, and manual muscle strength measures and their association with cycling performance in elite para-cyclists.
2023 (English)In: American Journal of Physical Medicine & Rehabilitation, ISSN 0894-9115, E-ISSN 1537-7385, Vol. 102, no 5, p. 461-467Article in journal (Refereed) Published
Abstract [en]

OBJECTIVE: Para-cycling classification aims to generate fair competition by discriminating between levels of activity limitation. This study investigated the relationship between lower limb Manual Muscle Tests (MMT) with ratio-scaled measures of isometric and dynamic strength, and of the ratio-scaled measures with cycling performance.

DESIGN: Fifty-six para-cyclists (44 males, 12 females) with leg impairments performed isometric and dynamic strength tests: leg push and pull, and an all-out 20 s sprint. MMT results were obtained from the classification database (n = 21) and race speeds from time trials (n = 54).

RESULTS: Regression analyses showed significant associations of MMT with isometric push (R2 = .49), dynamic push (R2 = .35), and dynamic pull (R2 = .28). Isometric strength was significantly correlated with dynamic push (ρ = .63) and pull (ρ = .54). The isometric and dynamic tests were significantly associated with sprint power and race speed (R2 = .16-.50).

CONCLUSION: The modified MMT and ratio-scaled measures were significantly associated. The significant relation of isometric and dynamic strength with sprint power and race speed maps the impact of lower limb impairments on para-cycling performance. MMT and the isometric and dynamic measures show potential for use in para-cycling classification.

Place, publisher, year, edition, pages
Wolters Kluwer, 2023
National Category
Sport and Fitness Sciences
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-7024 (URN)10.1097/PHM.0000000000002014 (DOI)000985327400017 ()35349541 (PubMedID)
Available from: 2022-04-22 Created: 2022-04-22 Last updated: 2023-06-27Bibliographically approved
Welte, L., Holowka, N. B., Kelly, L. A., Arndt, A. & Rainbow, M. J. (2023). Mobility of the human foot's medial arch helps enable upright bipedal locomotion.. Frontiers in Bioengineering and Biotechnology, 11, Article ID 1155439.
Open this publication in new window or tab >>Mobility of the human foot's medial arch helps enable upright bipedal locomotion.
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2023 (English)In: Frontiers in Bioengineering and Biotechnology, E-ISSN 2296-4185, Vol. 11, article id 1155439Article in journal (Refereed) Published
Abstract [en]

Developing the ability to habitually walk and run upright on two feet is one of the most significant transformations to have occurred in human evolution. Many musculoskeletal adaptations enabled bipedal locomotion, including dramatic structural changes to the foot and, in particular, the evolution of an elevated medial arch. The foot's arched structure has previously been assumed to play a central role in directly propelling the center of mass forward and upward through leverage about the toes and a spring-like energy recoil. However, it is unclear whether or how the plantarflexion mobility and height of the medial arch support its propulsive lever function. We use high-speed biplanar x-ray measurements of foot bone motion on seven participants while walking and running and compare their motion to a subject-specific model without arch recoil. We show that regardless of intraspecific differences in medial arch height, arch recoil enables a longer contact time and favorable propulsive conditions at the ankle for walking upright on an extended leg. The generally overlooked navicular-medial cuneiform joint is primarily responsible for arch recoil in human arches. The mechanism through which arch recoil enables an upright ankle posture may have helped drive the evolution of the longitudinal arch after our last common ancestor with chimpanzees, who lack arch plantarflexion mobility during push-off. Future morphological investigations of the navicular-medial cuneiform joint will likely provide new interpretations of the fossil record. Our work further suggests that enabling medial arch recoil in footwear and surgical interventions may be critical for maintaining the ankle's natural propulsive ability.

Place, publisher, year, edition, pages
Frontiers Media S.A., 2023
Keywords
arch spring, biplanar videoradiography, foot biomechanics, foot lever, longitudinal arch, running, walking
National Category
Medical Biotechnology Physiology
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-7678 (URN)10.3389/fbioe.2023.1155439 (DOI)001009168600001 ()37324435 (PubMedID)
Available from: 2023-06-27 Created: 2023-06-27 Last updated: 2023-08-21
Arndt, T. & Potthast, W. (2023). The past, present and future of footwear biomechanics: celebrating 50 years of the International Society of Biomechanics. Footwear Science, 15(2), 121-122
Open this publication in new window or tab >>The past, present and future of footwear biomechanics: celebrating 50 years of the International Society of Biomechanics
2023 (English)In: Footwear Science, ISSN 1942-4280, E-ISSN 1942-4299, Vol. 15, no 2, p. 121-122Article in journal, Editorial material (Other academic) Published
Place, publisher, year, edition, pages
Routledge, 2023
National Category
Sport and Fitness Sciences
Research subject
Medicine/Technology; Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-7736 (URN)10.1080/19424280.2023.2213027 (DOI)001023429400005 ()
Available from: 2023-08-29 Created: 2023-08-29 Last updated: 2023-08-29
Welte, L., Dickinson, A., Arndt, A. & Rainbow, M. J. (2022). Biplanar Videoradiography Dataset for Model-based Pose Estimation Development and New User Training. Journal of Visualized Experiments (183), Article ID e63535.
Open this publication in new window or tab >>Biplanar Videoradiography Dataset for Model-based Pose Estimation Development and New User Training
2022 (English)In: Journal of Visualized Experiments, E-ISSN 1940-087X, no 183, article id e63535Article in journal (Refereed) Published
Abstract [en]

Measuring the motion of the small foot bones is critical for understanding pathological loss of function. Biplanar videoradiography is well-suited to measure in vivo bone motion, but challenges arise when estimating the rotation and translation (pose) of each bone. The bone's pose is typically estimated with marker- or model-based methods. Marker-based methods are highly accurate but uncommon in vivo due to their invasiveness. Model-based methods are more common but are currently less accurate as they rely on user input and lab-specific algorithms. This work presents a rare in vivo dataset of the calcaneus, talus, and tibia poses, as measured with marker-based methods during running and hopping. A method is included to train users to improve their initial guesses into model-based pose estimation software, using marker-based visual feedback. New operators were able to estimate bone poses within 2° of rotation and 1 mm of translation of the marker-based pose, similar to an expert user of the model-based software, and representing a substantial improvement over previously reported inter-operator variability. Further, this dataset can be used to validate other model-based pose estimation software. Ultimately, sharing this dataset will improve the speed and accuracy with which users can measure bone poses from biplanar videoradiography.

Place, publisher, year, edition, pages
MyJove Corporation, 2022
National Category
Radiology, Nuclear Medicine and Medical Imaging
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-7062 (URN)10.3791/63535 (DOI)000810986100002 ()
Available from: 2022-05-19 Created: 2022-05-19 Last updated: 2024-01-17
Spiegl, O., Tarassova, O., Lundgren, L. E., Neuman, D. & Arndt, A. (2022). Comparison of lightweight and traditional figure skating blades, a prototype blade with integrated damping system and a running shoe in simulated figure skating landings and vertical countermovement jumps, and evaluation of dampening properties of the prototype blade.. Sports Biomechanics, 1-22
Open this publication in new window or tab >>Comparison of lightweight and traditional figure skating blades, a prototype blade with integrated damping system and a running shoe in simulated figure skating landings and vertical countermovement jumps, and evaluation of dampening properties of the prototype blade.
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2022 (English)In: Sports Biomechanics, ISSN 1476-3141, E-ISSN 1752-6116, p. 1-22Article in journal (Refereed) Epub ahead of print
Abstract [en]

To date, there is no empirical evidence suggesting greater jump heights or cushioned landings when using figure skating (FS) blades of different mass and design. This study examined the effect of lightweight (Gold Seal Revolution from John Wilson) and traditional (Apex Supreme from Jackson Ultima and Volant from Riedell) blades, a new prototype blade with an integrated damping system (damping blade) in two different damping configurations, and running shoes (Runfalcon from Adidas) on kinetics and kinematics during simulated on-ice landings from 0.6 m and maximal countermovement jumps on synthetic ice, and measured dampening properties of the damping blade. Seventeen participants executed trials in the six footwear conditions blinded to the different blades and acted as their own control for statistical comparison. There were no differences between the lightweight and traditional blades on the maximal vertical ground reaction force during the landing. Image analysis showed a damping effect in the damping blade that significantly decreased the landing load for all participants (mean 4.38 ± 0.68 bodyweight) (p ≤ 0.006), on average between 10.1 and 14.3% compared to lightweight and traditional blades (4.87 ± 1.01 to 5.11 ± 0.88 bodyweight). The maximal jump height achieved was the same in all FS blades.

Place, publisher, year, edition, pages
Taylor & Francis, 2022
Keywords
damping system and shock absorption, figure skating blade, injury prevention, landing impact and jump height, sports equipment design
National Category
Sport and Fitness Sciences
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-7085 (URN)10.1080/14763141.2022.2063757 (DOI)000796905500001 ()35579065 (PubMedID)
Funder
Swedish National Centre for Research in Sports, P2019-0078
Available from: 2022-06-28 Created: 2022-06-28 Last updated: 2022-06-28
Wolf, P., Moor, R., Lundberg, A., Nester, C., Arndt, A. & Graf, E. (2022). Human ankle joint movements during walking are probably not determined by talar morphology.. Scientific Reports, 12(1), Article ID 13856.
Open this publication in new window or tab >>Human ankle joint movements during walking are probably not determined by talar morphology.
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2022 (English)In: Scientific Reports, E-ISSN 2045-2322, Vol. 12, no 1, article id 13856Article in journal (Refereed) Published
Abstract [en]

Knowledge about the orientation of a representative ankle joint axis is limited to studies of tarsal morphology and of quasistatic movements. The aim of our study was therefore to determine the development of the axis orientation during walking. Intracortical bone pins were used to monitor the kinematics of the talus and tibia of five healthy volunteers. The finite helical axis was determined for moving windows of 10% stance phase and its orientation reported if the rotation about the axis was more than 2°. A representative axis for ankle dorsi- and plantarflexion was also estimated based on tarsal morphology. As reported by literature, the morphology-based axis was inclined more medially upwards for dorsiflexion than for plantarflexion. However, when a mean of the finite helical axis orientations was calculated for each walking trial for dorsiflexion (stance phase 15-25%) and for plantarflexion (stance phase 85-95%), the inclination was less medially upwards in dorsiflexion than in plantarflexion in four out of five participants. Thus, it appears that the inclination of a representative ankle joint axis for dynamic loading situations cannot be estimated from either morphology or quasi-static experiments. Future studies assessing muscle activity, ligament behaviour and articulating surfaces may help to identify the determining factors for the orientation of a representative ankle joint axis.

Place, publisher, year, edition, pages
Nature Publishing Group, 2022
National Category
Physiology
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-7144 (URN)10.1038/s41598-022-17984-5 (DOI)000841397200029 ()35974121 (PubMedID)
Available from: 2022-10-10 Created: 2022-10-10 Last updated: 2022-10-10
Jacques, T. C., Bini, R. & Arndt, A. (2022). Inter-limb differences in vivo tendon behavior, kinematics, kinetics and muscle activation during running. Journal of Biomechanics, 141, Article ID 111209.
Open this publication in new window or tab >>Inter-limb differences in vivo tendon behavior, kinematics, kinetics and muscle activation during running
2022 (English)In: Journal of Biomechanics, ISSN 0021-9290, E-ISSN 1873-2380, Vol. 141, article id 111209Article in journal (Refereed) Published
Abstract [en]

Overloading of tendon tissue may result in overuse tendon injuries in runners. One possible cause of overloading could be the occurrence of biomechanical inter-limb differences during running. However, scarce information exists concerning the simultaneous analysis of inter-limb differences in external and internal loading-related variables in habitual runners. In this study ground reaction force, joint kinematics, triceps surae and tibialis anterior activations, and medial gastrocnemius muscle-tendon junction displacement were assessed bilaterally during treadmill running at 2.7 m.s-1 and 4.2 m.s-1. Statistical parametric t-tests and effect sizes were calculated to identify eventual inter-limb differences across the stance phase and stride cycle. Hip flexion angle was 9° greater (p = 0.03, ES = 0.30) in the non-preferred limb during the flight phase at 4.2 m.s-1. Hip extension velocity was 45 deg.s-1 greater (p = 0.04, ES = 0.41) during ground contact and 25 deg.s-1 greater (p = 0.02, ES = 0.41) immediately after toe-off in the non-preferred limb at 4.2 m.s-1. Hip extension velocity was also 40 deg.s-1 greater (p = 0.01, ES = 0.46) in the non-preferred limb prior to touch-down at 4.2 m.s-1. Brief inter-limb differences in joint kinematics were not accompanied by inter-limb differences in variables associated to internal loading, suggesting they are unlikely to be underlying factors leading to tendon overloading in healthy non-injured runners.

Place, publisher, year, edition, pages
Elsevier, 2022
Keywords
Bilateral, Plantar flexors, Runners
National Category
Sport and Fitness Sciences
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-6676 (URN)10.1016/j.jbiomech.2022.111209 (DOI)35810654 (PubMedID)
Note

At the time of Tiago Jacques' dissertation this manuscript was submitted and under review.

Available from: 2021-05-12 Created: 2021-05-12 Last updated: 2023-01-16Bibliographically approved
Péter, A., Arndt, A., Hegyi, A., Finni, T., Andersson, E., Alkjær, T., . . . Cronin, N. (2022). Intramuscular EMG amplitudes do not necessarily diverge from surface EMG amplitudes over time. Response to Letter to the Editor [Letter to the editor]. Journal of Electromyography & Kinesiology, 64, Article ID 102662.
Open this publication in new window or tab >>Intramuscular EMG amplitudes do not necessarily diverge from surface EMG amplitudes over time. Response to Letter to the Editor
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2022 (English)In: Journal of Electromyography & Kinesiology, ISSN 1050-6411, E-ISSN 1873-5711, Vol. 64, article id 102662Article in journal, Letter (Other academic) Published
Place, publisher, year, edition, pages
Elsevier, 2022
Keywords
Electrodes, walking, wire
National Category
Neurology
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-7087 (URN)10.1016/j.jelekin.2022.102662 (DOI)000795663700003 ()
Available from: 2022-06-28 Created: 2022-06-28 Last updated: 2022-06-28
Projects
The role of individual muscle-tendon characteristics for running shoe performance enhancement [CIF P2021-0057]; Swedish School of Sport and Health Sciences, GIHValidation and application of new methods for measurements of power and force in elite sprint kayaking [CIF P2022-0025]; Swedish School of Sport and Health Sciences, GIH
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-1210-6449

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