Moment-angle relations after specific exercise

Publikationen: Beitrag in FachzeitschriftZeitschriftenaufsätzeForschung

Standard

Moment-angle relations after specific exercise. / Ullrich, Boris; Kleinöder, Heinz; Brüggemann, Gert-Peter.

in: International journal of sports medicine, Jahrgang 30, Nr. 4, 01.04.2009, S. 293-301.

Publikationen: Beitrag in FachzeitschriftZeitschriftenaufsätzeForschung

Harvard

APA

Vancouver

Bibtex

@article{f6a4c2709dfc46348ef807094582e6a3,
title = "Moment-angle relations after specific exercise",
abstract = "This study examined the amount and time-course of shifts in the moment-knee angle relation of the quadriceps (QF) and hamstring (HAM) muscles in response to different length-restricted strength training regimens. Thirty-two athletes were divided into three different training groups (G1-3): G1 performed isometric training at knee joint angles corresponding to long muscle-tendon unit (MTU) length for QF and HAM; G2 conducted concentric-eccentric contraction cycles that were restricted to a knee joint range of motion corresponding to predominantly long MTU length for QF and HAM; G3 combined the protocols of G1 and G2. Moment-knee angle and EMG-knee angle relations of QF and HAM were measured on five different occasions: two times before, after five and eight weeks of training and four weeks post training. Moments and EMG-data of each subject were normalized to the largest value produced at any knee joint position [{\%} Max.]. Obtained by curve fitting, the optimal knee joint angle for QF moment production was significantly (P<0.05) shifted to longer MTU length in G1 and G3 after 5 weeks of training and in G2 after 8 weeks of training. Contrary, no significant shifts were detected for HAM. Our data suggest that the predominant MTU length during loading is a major trigger for human force-length adaptations.",
keywords = "Adult, Electromyography, Exercise Test, Female, Humans, Isometric Contraction, Knee Joint, Male, Muscle Contraction, Muscle, Skeletal, Resistance Training, Sports, Time Factors, Young Adult",
author = "Boris Ullrich and Heinz Klein{\"o}der and Gert-Peter Br{\"u}ggemann",
year = "2009",
month = "4",
day = "1",
doi = "10.1055/s-0028-1104589",
language = "English",
volume = "30",
pages = "293--301",
journal = "International journal of sports medicine",
issn = "0172-4622",
publisher = "Georg Thieme Verlag",
number = "4",

}

RIS

TY - JOUR

T1 - Moment-angle relations after specific exercise

AU - Ullrich, Boris

AU - Kleinöder, Heinz

AU - Brüggemann, Gert-Peter

PY - 2009/4/1

Y1 - 2009/4/1

N2 - This study examined the amount and time-course of shifts in the moment-knee angle relation of the quadriceps (QF) and hamstring (HAM) muscles in response to different length-restricted strength training regimens. Thirty-two athletes were divided into three different training groups (G1-3): G1 performed isometric training at knee joint angles corresponding to long muscle-tendon unit (MTU) length for QF and HAM; G2 conducted concentric-eccentric contraction cycles that were restricted to a knee joint range of motion corresponding to predominantly long MTU length for QF and HAM; G3 combined the protocols of G1 and G2. Moment-knee angle and EMG-knee angle relations of QF and HAM were measured on five different occasions: two times before, after five and eight weeks of training and four weeks post training. Moments and EMG-data of each subject were normalized to the largest value produced at any knee joint position [% Max.]. Obtained by curve fitting, the optimal knee joint angle for QF moment production was significantly (P<0.05) shifted to longer MTU length in G1 and G3 after 5 weeks of training and in G2 after 8 weeks of training. Contrary, no significant shifts were detected for HAM. Our data suggest that the predominant MTU length during loading is a major trigger for human force-length adaptations.

AB - This study examined the amount and time-course of shifts in the moment-knee angle relation of the quadriceps (QF) and hamstring (HAM) muscles in response to different length-restricted strength training regimens. Thirty-two athletes were divided into three different training groups (G1-3): G1 performed isometric training at knee joint angles corresponding to long muscle-tendon unit (MTU) length for QF and HAM; G2 conducted concentric-eccentric contraction cycles that were restricted to a knee joint range of motion corresponding to predominantly long MTU length for QF and HAM; G3 combined the protocols of G1 and G2. Moment-knee angle and EMG-knee angle relations of QF and HAM were measured on five different occasions: two times before, after five and eight weeks of training and four weeks post training. Moments and EMG-data of each subject were normalized to the largest value produced at any knee joint position [% Max.]. Obtained by curve fitting, the optimal knee joint angle for QF moment production was significantly (P<0.05) shifted to longer MTU length in G1 and G3 after 5 weeks of training and in G2 after 8 weeks of training. Contrary, no significant shifts were detected for HAM. Our data suggest that the predominant MTU length during loading is a major trigger for human force-length adaptations.

KW - Adult

KW - Electromyography

KW - Exercise Test

KW - Female

KW - Humans

KW - Isometric Contraction

KW - Knee Joint

KW - Male

KW - Muscle Contraction

KW - Muscle, Skeletal

KW - Resistance Training

KW - Sports

KW - Time Factors

KW - Young Adult

U2 - 10.1055/s-0028-1104589

DO - 10.1055/s-0028-1104589

M3 - Journal articles

C2 - 19199195

VL - 30

SP - 293

EP - 301

JO - International journal of sports medicine

JF - International journal of sports medicine

SN - 0172-4622

IS - 4

ER -

ID: 27509