Force trace characteristics in anterior cruciate ligament deficient and uninjured knees during a maximal isometric task

Joe Moore; Dipak Raj; Genevieve Williams; Christopher Bridle; David Mullineaux

Force trace characteristics in anterior cruciate ligament deficient and uninjured knees during a maximal isometric task

Joe Moore, Dipak Raj, Genevieve Williams, Christopher Bridle, David Mullineaux

School of Sport, Health & Exercise Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Anterior cruciate ligament (ACL) deficiency has been shown to alter the muscle function of the leg. This study aimed to investigate differences in force trace characteristics of a maximal isometric task between ACL deficient and uninjured knees. Six ACL injured and uninjured participants completed maximal adduction, extension, and flexion isometric contractions. Peak, mean, standard deviation (SD), coefficient of variance (CV), frequency and signal regularity were calculated for all trials. Mean flexion force was larger in the ACL intact (0.91 N/kg) compared to their deficient (0.67 N/kg; p<0.05) knee. SD, CV and frequency composition of the extension trial differed between limbs in the uninjured (p<0.05). Analysis of variability, frequency and regularity of a signal may provide information on the function of the knee.

Original language	English
Title of host publication	ISBS Proceedings Archive
Editors	Wolfgang Potthast, Anja Niehoff, Sina David
Publisher	Northern Michigan University
Pages	1152-1155
Number of pages	4
Publication status	Published - 27 Oct 2017
Event	35th Conference of the International Society of Biomechanics in Sport - German Sport University Cologne, Cologne, Germany Duration: 14 Jun 2017 → 18 Jun 2017

Conference

Conference	35th Conference of the International Society of Biomechanics in Sport
Country/Territory	Germany
City	Cologne
Period	14/06/17 → 18/06/17

Keywords

peak
variability
frequency
entropy

Access to Document

https://commons.nmu.edu/isbs/vol35/iss1/159/

Cite this

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title = "Force trace characteristics in anterior cruciate ligament deficient and uninjured knees during a maximal isometric task",

abstract = "Anterior cruciate ligament (ACL) deficiency has been shown to alter the muscle function of the leg. This study aimed to investigate differences in force trace characteristics of a maximal isometric task between ACL deficient and uninjured knees. Six ACL injured and uninjured participants completed maximal adduction, extension, and flexion isometric contractions. Peak, mean, standard deviation (SD), coefficient of variance (CV), frequency and signal regularity were calculated for all trials. Mean flexion force was larger in the ACL intact (0.91 N/kg) compared to their deficient (0.67 N/kg; p<0.05) knee. SD, CV and frequency composition of the extension trial differed between limbs in the uninjured (p<0.05). Analysis of variability, frequency and regularity of a signal may provide information on the function of the knee.",

keywords = "peak, variability, frequency, entropy",

author = "Joe Moore and Dipak Raj and Genevieve Williams and Christopher Bridle and David Mullineaux",

note = "Article does not have a DOI; 35th Conference of the International Society of Biomechanics in Sport ; Conference date: 14-06-2017 Through 18-06-2017",

year = "2017",

month = oct,

day = "27",

language = "English",

pages = "1152--1155",

editor = "Wolfgang Potthast and Anja Niehoff and Sina David",

booktitle = "ISBS Proceedings Archive",

publisher = "Northern Michigan University",

address = "United States",

}

Moore, J, Raj, D, Williams, G, Bridle, C & Mullineaux, D 2017, Force trace characteristics in anterior cruciate ligament deficient and uninjured knees during a maximal isometric task. in W Potthast, A Niehoff & S David (eds), ISBS Proceedings Archive., 159, Northern Michigan University, pp. 1152-1155, 35th Conference of the International Society of Biomechanics in Sport, Cologne, North Rhine-Westphalia, Germany, 14/06/17. <https://commons.nmu.edu/isbs/vol35/iss1/159/>

Force trace characteristics in anterior cruciate ligament deficient and uninjured knees during a maximal isometric task. / Moore, Joe; Raj, Dipak; Williams, Genevieve et al.

ISBS Proceedings Archive. ed. / Wolfgang Potthast; Anja Niehoff; Sina David. Northern Michigan University, 2017. p. 1152-1155 159.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Force trace characteristics in anterior cruciate ligament deficient and uninjured knees during a maximal isometric task

AU - Moore, Joe

AU - Raj, Dipak

AU - Williams, Genevieve

AU - Bridle, Christopher

AU - Mullineaux, David

N1 - Article does not have a DOI

PY - 2017/10/27

Y1 - 2017/10/27

N2 - Anterior cruciate ligament (ACL) deficiency has been shown to alter the muscle function of the leg. This study aimed to investigate differences in force trace characteristics of a maximal isometric task between ACL deficient and uninjured knees. Six ACL injured and uninjured participants completed maximal adduction, extension, and flexion isometric contractions. Peak, mean, standard deviation (SD), coefficient of variance (CV), frequency and signal regularity were calculated for all trials. Mean flexion force was larger in the ACL intact (0.91 N/kg) compared to their deficient (0.67 N/kg; p<0.05) knee. SD, CV and frequency composition of the extension trial differed between limbs in the uninjured (p<0.05). Analysis of variability, frequency and regularity of a signal may provide information on the function of the knee.

AB - Anterior cruciate ligament (ACL) deficiency has been shown to alter the muscle function of the leg. This study aimed to investigate differences in force trace characteristics of a maximal isometric task between ACL deficient and uninjured knees. Six ACL injured and uninjured participants completed maximal adduction, extension, and flexion isometric contractions. Peak, mean, standard deviation (SD), coefficient of variance (CV), frequency and signal regularity were calculated for all trials. Mean flexion force was larger in the ACL intact (0.91 N/kg) compared to their deficient (0.67 N/kg; p<0.05) knee. SD, CV and frequency composition of the extension trial differed between limbs in the uninjured (p<0.05). Analysis of variability, frequency and regularity of a signal may provide information on the function of the knee.

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KW - variability

KW - frequency

KW - entropy

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M3 - Conference contribution

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EP - 1155

BT - ISBS Proceedings Archive

A2 - Potthast, Wolfgang

A2 - Niehoff, Anja

A2 - David, Sina

PB - Northern Michigan University

T2 - 35th Conference of the International Society of Biomechanics in Sport

Y2 - 14 June 2017 through 18 June 2017

ER -

Force trace characteristics in anterior cruciate ligament deficient and uninjured knees during a maximal isometric task

Abstract

Conference

Keywords

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Cite this