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Biomechanical measures of short-term maximal cycling on an ergometer: a test-retest study

Louise Burnie, Paul Barratt, Keith Davids Orcid Logo, Paul Worsfold, Jon Wheat Orcid Logo

Sports Biomechanics, Volume: 22, Issue: 8, Pages: 997 - 1015

Swansea University Author: Louise Burnie

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DOI (Published version): 10.1080/14763141.2020.1773916

Abstract

An understanding of test-retest reliability is important for biomechanists, such as when assessing the longitudinal effect of training or equipment interventions. Our aim was to quantify the test-retest reliability of biomechanical variables measured during short-term maximal cycling. Fourteen track...

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Published in: Sports Biomechanics
ISSN: 1476-3141 1752-6116
Published: Informa UK Limited 2023
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URI: https://cronfa.swan.ac.uk/Record/cronfa54294
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last_indexed 2023-01-11T14:32:16Z
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spelling v2 54294 2020-05-21 Biomechanical measures of short-term maximal cycling on an ergometer: a test-retest study 5041249e01f2b24510eb8c4681d2e8dc Louise Burnie Louise Burnie true false 2020-05-21 MECH An understanding of test-retest reliability is important for biomechanists, such as when assessing the longitudinal effect of training or equipment interventions. Our aim was to quantify the test-retest reliability of biomechanical variables measured during short-term maximal cycling. Fourteen track sprint cyclists performed 3 × 4 s seated sprints at 135 rpm on an isokinetic ergometer, repeating the session 7.6 ± 2.5 days later. Joint moments were calculated via inverse dynamics, using pedal forces and limb kinematics. EMG activity was measured for 9 lower limb muscles. Reliability was explored by quantifying systematic and random differences within- and between-session. Within-session reliability was better than between-sessions reliability. The test-retest reliability level was typically moderate to excellent for the biomechanical variables that describe maximal cycling. However, some variables, such as peak knee flexion moment and maximum hip joint power, demonstrated lower reliability, indicating that care needs to be taken when using these variables to evaluate biomechanical changes. Although measurement error (instrumentation error, anatomical marker misplacement, soft tissue artefacts) can explain some of our reliability observations, we speculate that biological variability may also be a contributor to the lower repeatability observed in several variables including ineffective crank force, ankle kinematics and hamstring muscles’ activation patterns. Journal Article Sports Biomechanics 22 8 997 1015 Informa UK Limited 1476-3141 1752-6116 Sprint cycling, kinematics, kinetics, emg, maximal power 3 8 2023 2023-08-03 10.1080/14763141.2020.1773916 http://dx.doi.org/10.1080/14763141.2020.1773916 COLLEGE NANME Mechanical Engineering COLLEGE CODE MECH Swansea University 2023-09-04T17:51:37.6290153 2020-05-21T09:51:37.6220279 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering Louise Burnie 1 Paul Barratt 2 Keith Davids 0000-0003-1398-6123 3 Paul Worsfold 4 Jon Wheat 0000-0002-1107-6452 5 54294__17312__794e588c79584c6c87124d306b703e4a.pdf 54294.pdf 2020-05-21T09:53:50.6889222 Output 1780675 application/pdf Accepted Manuscript true 2021-08-11T00:00:00.0000000 true English
title Biomechanical measures of short-term maximal cycling on an ergometer: a test-retest study
spellingShingle Biomechanical measures of short-term maximal cycling on an ergometer: a test-retest study
Louise Burnie
title_short Biomechanical measures of short-term maximal cycling on an ergometer: a test-retest study
title_full Biomechanical measures of short-term maximal cycling on an ergometer: a test-retest study
title_fullStr Biomechanical measures of short-term maximal cycling on an ergometer: a test-retest study
title_full_unstemmed Biomechanical measures of short-term maximal cycling on an ergometer: a test-retest study
title_sort Biomechanical measures of short-term maximal cycling on an ergometer: a test-retest study
author_id_str_mv 5041249e01f2b24510eb8c4681d2e8dc
author_id_fullname_str_mv 5041249e01f2b24510eb8c4681d2e8dc_***_Louise Burnie
author Louise Burnie
author2 Louise Burnie
Paul Barratt
Keith Davids
Paul Worsfold
Jon Wheat
format Journal article
container_title Sports Biomechanics
container_volume 22
container_issue 8
container_start_page 997
publishDate 2023
institution Swansea University
issn 1476-3141
1752-6116
doi_str_mv 10.1080/14763141.2020.1773916
publisher Informa UK Limited
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 - Mechanical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering
url http://dx.doi.org/10.1080/14763141.2020.1773916
document_store_str 1
active_str 0
description An understanding of test-retest reliability is important for biomechanists, such as when assessing the longitudinal effect of training or equipment interventions. Our aim was to quantify the test-retest reliability of biomechanical variables measured during short-term maximal cycling. Fourteen track sprint cyclists performed 3 × 4 s seated sprints at 135 rpm on an isokinetic ergometer, repeating the session 7.6 ± 2.5 days later. Joint moments were calculated via inverse dynamics, using pedal forces and limb kinematics. EMG activity was measured for 9 lower limb muscles. Reliability was explored by quantifying systematic and random differences within- and between-session. Within-session reliability was better than between-sessions reliability. The test-retest reliability level was typically moderate to excellent for the biomechanical variables that describe maximal cycling. However, some variables, such as peak knee flexion moment and maximum hip joint power, demonstrated lower reliability, indicating that care needs to be taken when using these variables to evaluate biomechanical changes. Although measurement error (instrumentation error, anatomical marker misplacement, soft tissue artefacts) can explain some of our reliability observations, we speculate that biological variability may also be a contributor to the lower repeatability observed in several variables including ineffective crank force, ankle kinematics and hamstring muscles’ activation patterns.
published_date 2023-08-03T17:51:39Z
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score 11.036706

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