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Calculation of the centre of pressure on the athletic starting block

Yuji Ohshima, Neil Bezodis Orcid Logo, Ryu Nagahara

Sports Biomechanics, Pages: 1 - 14

Swansea University Author: Neil Bezodis Orcid Logo

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DOI (Published version): 10.1080/14763141.2018.1561933

Abstract

We aimed to evaluate the accuracy of a new method to calculate the centre of pressure (COP) on a starting block above a force platform, and to examine how this method affected lower extremity joint torques during the block clearance phase compared against a previously used method which projects the...

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Published in: Sports Biomechanics
ISSN: 1476-3141 1752-6116
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa48057
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first_indexed 2019-01-07T14:02:03Z
last_indexed 2019-02-18T14:09:39Z
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spelling 2019-02-18T12:13:31.7632951 v2 48057 2019-01-07 Calculation of the centre of pressure on the athletic starting block 534588568c1936e94e1ed8527b8c991b 0000-0003-2229-3310 Neil Bezodis Neil Bezodis true false 2019-01-07 STSC We aimed to evaluate the accuracy of a new method to calculate the centre of pressure (COP) on a starting block above a force platform, and to examine how this method affected lower extremity joint torques during the block clearance phase compared against a previously used method which projects the COP from the metatarsophalangeal (MP) joint. To evaluate the accuracy of the new method, one experimenter applied force at 18 known locations on a starting block (under six block position and orientation conditions), during which ground reaction force was recorded underneath using a force platform. Two sprinters then performed three block starts each, and lower extremity joint torques were calculated during block clearance using the COP obtained from the new method and from the projection of the MP joint location. The calculated COP using the new method had a mean bias of ≤0.002 m. There were some large differences (effect sizes = 0.11–4.01) in the lower extremity joint torques between the two methods which could have important implications for understanding block clearance phase kinetics. The new method for obtaining the COP on a starting block is highly accurate and affects the calculation of joint torques during the block clearance phase. Journal Article Sports Biomechanics 1 14 1476-3141 1752-6116 Ground reaction force, COP, sprint running, inverse dynamics, track and field 31 12 2019 2019-12-31 10.1080/14763141.2018.1561933 COLLEGE NANME Sport and Exercise Sciences COLLEGE CODE STSC Swansea University 2019-02-18T12:13:31.7632951 2019-01-07T12:21:28.4990373 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences Yuji Ohshima 1 Neil Bezodis 0000-0003-2229-3310 2 Ryu Nagahara 3 0048057-07012019141428.pdf Ohshima2018.pdf 2019-01-07T14:14:28.8200000 Output 917050 application/pdf Accepted Manuscript true 2020-01-29T00:00:00.0000000 true eng
title Calculation of the centre of pressure on the athletic starting block
spellingShingle Calculation of the centre of pressure on the athletic starting block
Neil Bezodis
title_short Calculation of the centre of pressure on the athletic starting block
title_full Calculation of the centre of pressure on the athletic starting block
title_fullStr Calculation of the centre of pressure on the athletic starting block
title_full_unstemmed Calculation of the centre of pressure on the athletic starting block
title_sort Calculation of the centre of pressure on the athletic starting block
author_id_str_mv 534588568c1936e94e1ed8527b8c991b
author_id_fullname_str_mv 534588568c1936e94e1ed8527b8c991b_***_Neil Bezodis
author Neil Bezodis
author2 Yuji Ohshima
Neil Bezodis
Ryu Nagahara
format Journal article
container_title Sports Biomechanics
container_start_page 1
publishDate 2019
institution Swansea University
issn 1476-3141
1752-6116
doi_str_mv 10.1080/14763141.2018.1561933
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences
document_store_str 1
active_str 0
description We aimed to evaluate the accuracy of a new method to calculate the centre of pressure (COP) on a starting block above a force platform, and to examine how this method affected lower extremity joint torques during the block clearance phase compared against a previously used method which projects the COP from the metatarsophalangeal (MP) joint. To evaluate the accuracy of the new method, one experimenter applied force at 18 known locations on a starting block (under six block position and orientation conditions), during which ground reaction force was recorded underneath using a force platform. Two sprinters then performed three block starts each, and lower extremity joint torques were calculated during block clearance using the COP obtained from the new method and from the projection of the MP joint location. The calculated COP using the new method had a mean bias of ≤0.002 m. There were some large differences (effect sizes = 0.11–4.01) in the lower extremity joint torques between the two methods which could have important implications for understanding block clearance phase kinetics. The new method for obtaining the COP on a starting block is highly accurate and affects the calculation of joint torques during the block clearance phase.
published_date 2019-12-31T03:58:21Z
_version_ 1763752963422027776
score 11.036706

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