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oai:figshare.com:article/33724198 2026-09-14T08:57:39Z portal_1197 item_type_3 month_year_09_2026

Data for Measuring ground reaction force and quantifying variability in jumping and bobbing actions M. G. McDonald (24871828) Stana Živanović (12654823) Engineering Arenas -- Vibration -- Experiments Stadiums -- Vibration -- Experiments Grandstands -- Vibration -- Experiments Ground reaction force (Biomechanics) Migrated from ePrints This paper investigates variability in bobbing and jumping actions, including variations within a population of eight test subjects (intersubject variability) and variability on a cycle-by-cycle basis for each individual (intrasubject variability). A motion-capture system and a force plate were employed to characterize the peak ground reaction force, frequency of the activity, range of body movement, and dynamic loading factors for at least first three harmonics. In addition, contact ratios were also measured for jumping activity. It is confirmed that most parameters are frequency dependent and vary significantly between individuals. Moreover, the study provides a rare insight into intrasubject variations, revealing that it is more difficult to perform bobbing in a consistent way. The paper demonstrates that the vibration response of a structure is sensitive to cycle-by-cycle variations in the forcing parameters, with highest sensitivity to variations in the activity frequency. In addition, this paper investigates whether accurate monitoring of the ground reaction force is possible by recording the kinematics of a single point on the human body. It is concluded that monitoring the C7th vertebrae at the base of the neck is appropriate for recording frequency content of up to 4 Hz for bobbing and 5 Hz for jumping. The results from this study are expected to contribute to the development of stochastic models of human actions on assembly structures. The proposed simplified measurements of the forcing function have potential to be used for monitoring groups and crowds of people on structures that host sports and music events and characterizing human-structure and human-human interaction effects.<br><br>The data are provided in form of a compressed file. After downloading and unpacking the data, you can inspect and analyse them using Microsoft Excel software (or any other software that can read the files). To understand the data fully, make sure to first read the paper and the explanation of the data format presented below. Every effort has been made to present the data in an easy to follow format. In case you need any additional information, feel free to contact the corresponding author. If you would like to make use of these data in your own publications, please cite the paper above as their source. The main folder contains 8 subfolders, one for each test subject. Test subject numbers used in the files correspond to those used in the paper. Each subfolder contains 14 CSV files. Seven of these files contain the 3D trajectories for 17 markers (sampling frequency 200Hz; order of marker presentation is B1-B6, RH1, RH2, LH2, LH1, F1-F7, where each marker occupies 3 columns of data related to X, Y and Z (vertical) global axis direction. The remaining seven files contain the 3D coordinates for the force measured by a force plate (sampling frequency 1000Hz; 3 columns of data related to the force contain force components in X, Y and Z (vertical) global axis directions. The vertical component of the force and the marker trajectories is analysed in the paper, and it is this component that you can analyse further. Other two (horizontal) axes have not been controlled (e.g. the test subjects might have rotated their body around the vertical axis during performing any particular test). Each pair of CSV files has "Traj" or "Force" in their filename, denoting which data type (marker tarjectories or force data) it contains. Also, each filename starts with either letter "B" or "J", to denote data related to bobbing or jumping, respectively. In addition, each filename contains information on frequency of the activity. 2017-02-01T00:00:00Z Dataset Dataset 10.82444/warw.33724198.v1 https://figshare.com/articles/dataset/Data_for_Measuring_ground_reaction_force_and_quantifying_variability_in_jumping_and_bobbing_actions/33724198 CC BY 4.0 Restricted Access