Evaluation of the walking pattern in two types of patients with anterior cruciate ligament deficiency: copers and non-copers

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Standard

Evaluation of the walking pattern in two types of patients with anterior cruciate ligament deficiency: copers and non-copers. / Alkjaer, T; Simonsen, Erik B; Jørgensen, Uffe; Dyhre-Poulsen, Poul.

I: European Journal of Applied Physiology, Bind 89, Nr. 3-4, 01.05.2003, s. 301-8.

Publikation: Bidrag til tidsskriftTidsskriftartikelfagfællebedømt

Harvard

Alkjaer, T, Simonsen, EB, Jørgensen, U & Dyhre-Poulsen, P 2003, 'Evaluation of the walking pattern in two types of patients with anterior cruciate ligament deficiency: copers and non-copers', European Journal of Applied Physiology, bind 89, nr. 3-4, s. 301-8. https://doi.org/10.1007/s00421-002-0787-x

APA

Alkjaer, T., Simonsen, E. B., Jørgensen, U., & Dyhre-Poulsen, P. (2003). Evaluation of the walking pattern in two types of patients with anterior cruciate ligament deficiency: copers and non-copers. European Journal of Applied Physiology, 89(3-4), 301-8. https://doi.org/10.1007/s00421-002-0787-x

Vancouver

Alkjaer T, Simonsen EB, Jørgensen U, Dyhre-Poulsen P. Evaluation of the walking pattern in two types of patients with anterior cruciate ligament deficiency: copers and non-copers. European Journal of Applied Physiology. 2003 maj 1;89(3-4):301-8. https://doi.org/10.1007/s00421-002-0787-x

Author

Alkjaer, T ; Simonsen, Erik B ; Jørgensen, Uffe ; Dyhre-Poulsen, Poul. / Evaluation of the walking pattern in two types of patients with anterior cruciate ligament deficiency: copers and non-copers. I: European Journal of Applied Physiology. 2003 ; Bind 89, Nr. 3-4. s. 301-8.

Bibtex

@article{a4da55687c494def83273492d202b34a,
title = "Evaluation of the walking pattern in two types of patients with anterior cruciate ligament deficiency: copers and non-copers",
abstract = "The purpose of the present study was to investigate whether different walking patterns in healthy subjects and in coper and non-coper subjects with deficient anterior cruciate ligaments could be quantified. An inverse dynamics approach was used to calculate joint kinematics and kinetics for flexion and extension. EMG signals of the hamstrings and quadriceps muscles were recorded. The results showed that the peak knee flexion angle was greater in the copers than in the controls. There was a positive correlation between the peak knee extensor moment and peak knee flexion angle. Furthermore, at a given peak knee flexion angle, the peak knee extensor moment was significantly larger in the controls than in the non-copers. The hip extensor moment in the copers was significantly larger than that of the non-copers and the controls. In conclusion, the three groups walked according to different patterns. It is suggested that the copers stabilized their knee joint by co-contraction of the hamstrings and quadriceps muscles, while the non-copers lacked this ability. Instead, the non-copers reduced the knee extensor moment in order to decrease anterior displacement of the tibia. The walking pattern differences observed between the copers and non-copers may explain their different post-injury activity levels.",
keywords = "Adaptation, Physiological, Adaptation, Psychological, Adult, Anterior Cruciate Ligament, Chronic Disease, Electromyography, Gait, Humans, Joint Instability, Knee Injuries, Knee Joint, Leg, Male, Muscle Contraction, Muscle, Skeletal, Recovery of Function, Severity of Illness Index",
author = "T Alkjaer and Simonsen, {Erik B} and Uffe J{\o}rgensen and Poul Dyhre-Poulsen",
year = "2003",
month = may,
day = "1",
doi = "10.1007/s00421-002-0787-x",
language = "English",
volume = "89",
pages = "301--8",
journal = "European Journal of Applied Physiology",
issn = "1439-6319",
publisher = "Springer",
number = "3-4",

}

RIS

TY - JOUR

T1 - Evaluation of the walking pattern in two types of patients with anterior cruciate ligament deficiency: copers and non-copers

AU - Alkjaer, T

AU - Simonsen, Erik B

AU - Jørgensen, Uffe

AU - Dyhre-Poulsen, Poul

PY - 2003/5/1

Y1 - 2003/5/1

N2 - The purpose of the present study was to investigate whether different walking patterns in healthy subjects and in coper and non-coper subjects with deficient anterior cruciate ligaments could be quantified. An inverse dynamics approach was used to calculate joint kinematics and kinetics for flexion and extension. EMG signals of the hamstrings and quadriceps muscles were recorded. The results showed that the peak knee flexion angle was greater in the copers than in the controls. There was a positive correlation between the peak knee extensor moment and peak knee flexion angle. Furthermore, at a given peak knee flexion angle, the peak knee extensor moment was significantly larger in the controls than in the non-copers. The hip extensor moment in the copers was significantly larger than that of the non-copers and the controls. In conclusion, the three groups walked according to different patterns. It is suggested that the copers stabilized their knee joint by co-contraction of the hamstrings and quadriceps muscles, while the non-copers lacked this ability. Instead, the non-copers reduced the knee extensor moment in order to decrease anterior displacement of the tibia. The walking pattern differences observed between the copers and non-copers may explain their different post-injury activity levels.

AB - The purpose of the present study was to investigate whether different walking patterns in healthy subjects and in coper and non-coper subjects with deficient anterior cruciate ligaments could be quantified. An inverse dynamics approach was used to calculate joint kinematics and kinetics for flexion and extension. EMG signals of the hamstrings and quadriceps muscles were recorded. The results showed that the peak knee flexion angle was greater in the copers than in the controls. There was a positive correlation between the peak knee extensor moment and peak knee flexion angle. Furthermore, at a given peak knee flexion angle, the peak knee extensor moment was significantly larger in the controls than in the non-copers. The hip extensor moment in the copers was significantly larger than that of the non-copers and the controls. In conclusion, the three groups walked according to different patterns. It is suggested that the copers stabilized their knee joint by co-contraction of the hamstrings and quadriceps muscles, while the non-copers lacked this ability. Instead, the non-copers reduced the knee extensor moment in order to decrease anterior displacement of the tibia. The walking pattern differences observed between the copers and non-copers may explain their different post-injury activity levels.

KW - Adaptation, Physiological

KW - Adaptation, Psychological

KW - Adult

KW - Anterior Cruciate Ligament

KW - Chronic Disease

KW - Electromyography

KW - Gait

KW - Humans

KW - Joint Instability

KW - Knee Injuries

KW - Knee Joint

KW - Leg

KW - Male

KW - Muscle Contraction

KW - Muscle, Skeletal

KW - Recovery of Function

KW - Severity of Illness Index

U2 - 10.1007/s00421-002-0787-x

DO - 10.1007/s00421-002-0787-x

M3 - Journal article

C2 - 12736838

VL - 89

SP - 301

EP - 308

JO - European Journal of Applied Physiology

JF - European Journal of Applied Physiology

SN - 1439-6319

IS - 3-4

ER -

ID: 33887614