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Journal article 1344 views 497 downloads

Alterations to the orientation of the ground reaction force vector affect sprint acceleration performance in team sports athletes

Neil Bezodis Orcid Logo, Jamie S. North, Jane L. Razavet

Journal of Sports Sciences, Volume: 35, Issue: 18, Pages: 1 - 8

Swansea University Author: Neil Bezodis Orcid Logo

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DOI (Published version): 10.1080/02640414.2016.1239024

Abstract

A more horizontally oriented ground reaction force vector is related to higher levels of sprint acceleration performance across a range of athletes. However, the effects of acute experimental alterations to the force vector orientation within athletes are unknown. Fifteen male team sports athletes c...

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Published in: Journal of Sports Sciences
ISSN: 0264-0414 1466-447X
Published: 2016
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa30086
first_indexed 2016-09-20T07:03:51Z
last_indexed 2020-06-25T12:41:13Z
id cronfa30086
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spelling 2020-06-25T12:52:46.9155019 v2 30086 2016-09-16 Alterations to the orientation of the ground reaction force vector affect sprint acceleration performance in team sports athletes 534588568c1936e94e1ed8527b8c991b 0000-0003-2229-3310 Neil Bezodis Neil Bezodis true false 2016-09-16 EAAS A more horizontally oriented ground reaction force vector is related to higher levels of sprint acceleration performance across a range of athletes. However, the effects of acute experimental alterations to the force vector orientation within athletes are unknown. Fifteen male team sports athletes completed maximal effort 10-m accelerations in three conditions following different verbal instructions intended to manipulate the force vector orientation. Ground reaction forces (GRFs) were collected from the step nearest 5-m and stance leg kinematics at touchdown were also analysed to understand specific kinematic features of touchdown technique which may influence the consequent force vector orientation. Magnitude-based inferences were used to compare findings between conditions. There was a likely more horizontally oriented ground reaction force vector and a likely lower peak vertical force in the control condition compared with the experimental conditions. 10-m sprint time was very likely quickest in the control condition which confirmed the importance of force vector orientation for acceleration performance on a within-athlete basis. The stance leg kinematics revealed that a more horizontally oriented force vector during stance was preceded at touchdown by a likely more dorsiflexed ankle, a likely more flexed knee, and a possibly or likely greater hip extension velocity. Journal Article Journal of Sports Sciences 35 18 1 8 0264-0414 1466-447X 31 12 2016 2016-12-31 10.1080/02640414.2016.1239024 COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University 2020-06-25T12:52:46.9155019 2016-09-16T11:31:38.0411395 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences Neil Bezodis 0000-0003-2229-3310 1 Jamie S. North 2 Jane L. Razavet 3 0030086-16092016113155.pdf Bezodis2016.pdf 2016-09-16T11:31:55.6870000 Output 309495 application/pdf Accepted Manuscript true 2018-04-04T00:00:00.0000000 false
title Alterations to the orientation of the ground reaction force vector affect sprint acceleration performance in team sports athletes
spellingShingle Alterations to the orientation of the ground reaction force vector affect sprint acceleration performance in team sports athletes
Neil Bezodis
title_short Alterations to the orientation of the ground reaction force vector affect sprint acceleration performance in team sports athletes
title_full Alterations to the orientation of the ground reaction force vector affect sprint acceleration performance in team sports athletes
title_fullStr Alterations to the orientation of the ground reaction force vector affect sprint acceleration performance in team sports athletes
title_full_unstemmed Alterations to the orientation of the ground reaction force vector affect sprint acceleration performance in team sports athletes
title_sort Alterations to the orientation of the ground reaction force vector affect sprint acceleration performance in team sports athletes
author_id_str_mv 534588568c1936e94e1ed8527b8c991b
author_id_fullname_str_mv 534588568c1936e94e1ed8527b8c991b_***_Neil Bezodis
author Neil Bezodis
author2 Neil Bezodis
Jamie S. North
Jane L. Razavet
format Journal article
container_title Journal of Sports Sciences
container_volume 35
container_issue 18
container_start_page 1
publishDate 2016
institution Swansea University
issn 0264-0414
1466-447X
doi_str_mv 10.1080/02640414.2016.1239024
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 A more horizontally oriented ground reaction force vector is related to higher levels of sprint acceleration performance across a range of athletes. However, the effects of acute experimental alterations to the force vector orientation within athletes are unknown. Fifteen male team sports athletes completed maximal effort 10-m accelerations in three conditions following different verbal instructions intended to manipulate the force vector orientation. Ground reaction forces (GRFs) were collected from the step nearest 5-m and stance leg kinematics at touchdown were also analysed to understand specific kinematic features of touchdown technique which may influence the consequent force vector orientation. Magnitude-based inferences were used to compare findings between conditions. There was a likely more horizontally oriented ground reaction force vector and a likely lower peak vertical force in the control condition compared with the experimental conditions. 10-m sprint time was very likely quickest in the control condition which confirmed the importance of force vector orientation for acceleration performance on a within-athlete basis. The stance leg kinematics revealed that a more horizontally oriented force vector during stance was preceded at touchdown by a likely more dorsiflexed ankle, a likely more flexed knee, and a possibly or likely greater hip extension velocity.
published_date 2016-12-31T01:10:24Z
_version_ 1821365842640633856
score 11.04748

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