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Impact of vertical vibrations on human rhythmic jumping
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Abraham, Nimmy M., Williams, Genevieve and Živanović, Stana (2023) Impact of vertical vibrations on human rhythmic jumping. Structures, 57 . 105154. doi:10.1016/j.istruc.2023.105154 ISSN 2352-0124.
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Official URL: https://doi.org/10.1016/j.istruc.2023.105154
Abstract
This paper investigates the human ability to perform rhythmic jumping on a vertically vibrating platform by analysing kinetics and kinematics. Ten test subjects participated, performing jumping on both non-vibrating and vibrating platforms. Vibration frequencies of 2.0, 2.4, and 2.8 Hz were used, with a vibration level of 2 m/s2. The frequency of jumping matched the vibration frequency, and for the first time, the jumps were timed relative to the platform's position in the vibration cycle. A metronome prompted landings at four target positions: (i) reference position and on the way down (mid-down), (ii) lowest position (trough), (iii) reference position and on the way up (mid-up), and (iv) highest position (peak), at each frequency. The study compared the achievement of the target frequency of jumping between non-vibrating and vibrating platform conditions for each frequency. Results showed the worst performance when the target frequency was 2.8 Hz on the non-vibrating platform, confirming the difficulty of faster jumping on non-vibrating surfaces. The discrete relative phase analysis revealed a preference for landing at the trough and mid-up positions on the vibrating platform, particularly at 2.8 Hz. The preferred timing of jumps corresponded to greater toe clearance and impact ratio, but shorter contact duration compared to the non-vibrating platform. These findings hold promise for improving human-structure interaction models for assembly structures used in sports and musical events.
Item Type: | Journal Article | ||||||||
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Subjects: | Q Science > Q Science (General) | ||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
Library of Congress Subject Headings (LCSH): | Jumping, Vibration, Kinematics, Human engineering | ||||||||
Journal or Publication Title: | Structures | ||||||||
Publisher: | Elsevier | ||||||||
ISSN: | 2352-0124 | ||||||||
Official Date: | November 2023 | ||||||||
Dates: |
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Volume: | 57 | ||||||||
Article Number: | 105154 | ||||||||
DOI: | 10.1016/j.istruc.2023.105154 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||
Date of first compliant deposit: | 13 September 2023 | ||||||||
Date of first compliant Open Access: | 13 September 2023 | ||||||||
RIOXX Funder/Project Grant: |
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