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The Effect of Body Size on Countermovement Jump Kinetics in Children aged 7 to 11 years

Christopher Mark Jones, Melitta McNarry Orcid Logo, Nick John Owen, Nicholas Owen Orcid Logo

European Journal of Sport Science, Pages: 1 - 18

Swansea University Authors: Melitta McNarry Orcid Logo, Nicholas Owen Orcid Logo

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DOI (Published version): 10.1080/17461391.2019.1615557

Abstract

The purpose this study was to examine the effect of body size oncountermovement jump (CMJ)kinetics in children.Participants(n = 160) aged 7-11 years, divided equally by sex and into primary school year groups(years 3, 4, 5 and 6), each performedone CMJ on aforce platform. The variables bodyweight(BW...

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Published in: European Journal of Sport Science
ISSN: 1746-1391 1536-7290
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa50193
first_indexed 2019-05-09T20:01:09Z
last_indexed 2019-07-18T21:34:43Z
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spelling 2019-07-18T14:32:20.5410884 v2 50193 2019-05-01 The Effect of Body Size on Countermovement Jump Kinetics in Children aged 7 to 11 years 062f5697ff59f004bc8c713955988398 0000-0003-0813-7477 Melitta McNarry Melitta McNarry true false 360b7822fd760c7d73a1b0ca5bce1c07 0000-0002-7067-8082 Nicholas Owen Nicholas Owen true false 2019-05-01 EAAS The purpose this study was to examine the effect of body size oncountermovement jump (CMJ)kinetics in children.Participants(n = 160) aged 7-11 years, divided equally by sex and into primary school year groups(years 3, 4, 5 and 6), each performedone CMJ on aforce platform. The variables bodyweight(BW), peak force (Fmax), in-jump minimum force (IMF), in-jump vertical force range (IFR) and basic rate of force development (BRFD)wereattained from the force-time history and then subsequently scaled to account for body size. A significant age, sex and interaction effect werefound for theabsolutevariables BW, IMF, Fmaxand IFR (P < 0.05)between school year groups 3 and 4 against year’s 5 and 6. Simple main effects highlighted no significant sex differences between the boys and girls for all variables (P > 0.05). No significant age or sex differences were observed for normalised or allometrically scaled values(P > 0.05). The results indicate thatgirls and boys can be grouped together but that body size must be accounted for to enable accurate conclusions to be drawn independent of growth.Bodysizesignificantlyeffects the representation of CMJ kinetic results and therefore, future studies should report both absolute and scaled values.Future research should developan age-appropriate criterion method for children in order to determine processed CMJ variables to further investigate neuromuscular performance of children. Journal Article European Journal of Sport Science 1 18 1746-1391 1536-7290 Muscular power, Force platform, Children, Performance, Start time 31 12 2019 2019-12-31 10.1080/17461391.2019.1615557 COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University 2019-07-18T14:32:20.5410884 2019-05-01T17:52:15.4764243 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences Christopher Mark Jones 1 Melitta McNarry 0000-0003-0813-7477 2 Nick John Owen 3 Nicholas Owen 0000-0002-7067-8082 4 0050193-10052019144306.pdf jones2019(5).pdf 2019-05-10T14:43:06.9570000 Output 6484492 application/pdf Accepted Manuscript true 2020-05-04T00:00:00.0000000 true eng
title The Effect of Body Size on Countermovement Jump Kinetics in Children aged 7 to 11 years
spellingShingle The Effect of Body Size on Countermovement Jump Kinetics in Children aged 7 to 11 years
Melitta McNarry
Nicholas Owen
title_short The Effect of Body Size on Countermovement Jump Kinetics in Children aged 7 to 11 years
title_full The Effect of Body Size on Countermovement Jump Kinetics in Children aged 7 to 11 years
title_fullStr The Effect of Body Size on Countermovement Jump Kinetics in Children aged 7 to 11 years
title_full_unstemmed The Effect of Body Size on Countermovement Jump Kinetics in Children aged 7 to 11 years
title_sort The Effect of Body Size on Countermovement Jump Kinetics in Children aged 7 to 11 years
author_id_str_mv 062f5697ff59f004bc8c713955988398
360b7822fd760c7d73a1b0ca5bce1c07
author_id_fullname_str_mv 062f5697ff59f004bc8c713955988398_***_Melitta McNarry
360b7822fd760c7d73a1b0ca5bce1c07_***_Nicholas Owen
author Melitta McNarry
Nicholas Owen
author2 Christopher Mark Jones
Melitta McNarry
Nick John Owen
Nicholas Owen
format Journal article
container_title European Journal of Sport Science
container_start_page 1
publishDate 2019
institution Swansea University
issn 1746-1391
1536-7290
doi_str_mv 10.1080/17461391.2019.1615557
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
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description The purpose this study was to examine the effect of body size oncountermovement jump (CMJ)kinetics in children.Participants(n = 160) aged 7-11 years, divided equally by sex and into primary school year groups(years 3, 4, 5 and 6), each performedone CMJ on aforce platform. The variables bodyweight(BW), peak force (Fmax), in-jump minimum force (IMF), in-jump vertical force range (IFR) and basic rate of force development (BRFD)wereattained from the force-time history and then subsequently scaled to account for body size. A significant age, sex and interaction effect werefound for theabsolutevariables BW, IMF, Fmaxand IFR (P < 0.05)between school year groups 3 and 4 against year’s 5 and 6. Simple main effects highlighted no significant sex differences between the boys and girls for all variables (P > 0.05). No significant age or sex differences were observed for normalised or allometrically scaled values(P > 0.05). The results indicate thatgirls and boys can be grouped together but that body size must be accounted for to enable accurate conclusions to be drawn independent of growth.Bodysizesignificantlyeffects the representation of CMJ kinetic results and therefore, future studies should report both absolute and scaled values.Future research should developan age-appropriate criterion method for children in order to determine processed CMJ variables to further investigate neuromuscular performance of children.
published_date 2019-12-31T13:45:19Z
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