Article (Scientific journals)
Reliability of unipodal and bipodal counter movement jump landings in a recreational male population
Schwartz, Cédric; Forthomme, Bénédicte; Paulus, Julien et al.
2017In European Journal of Sport Science, 17 (9), p. 1143-1152
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Keywords :
biomechanics; lower limb; kinematics; ground reaction forces; verbal instruction
Abstract :
[en] Movement patterns during landing have been suggested to be related to injury risk. The purpose of this study was to determine the inter-session reliability of kinematic variables and ground reaction forces during landing in a population of male recreational athletes after a counter movement jump. Both unipodal and bipodal landings were evaluated. Furthermore, the possibility to improve landing reliability with a verbal instruction was also studied. Twenty- four male volunteers with no history of lower-extremity trauma were randomly assigned to two groups (with and without verbal landing instruction). An optoelectronic 3D system and force plates were used to measure the lower-limb joint angles and the ground reaction forces during landing. Intraclass correlation values show moderate to excellent inter-session reliability for the bipodal task (ICC average: 0.80, range: 0.46 to 0.97) and poor to excellent reliability for the unipodal task (ICC average: >0.75, range: 0.20 to 0.95). However, large standard errors of measurement values at the ankle joint at impact (27.6 ± 11.5°) and for the vertical ground reaction forces (394 ± 1091 N) show that some variables may not be usable in practice. The verbal instruction had a negative effect on the reliability of unipodal landing but improved the reliability of bipodal landing. These findings show that the reliability of a landing task is influenced by its motor complexity as well as the instruction given to the subject.
Research center :
Laboratoire d'Analyse du Mouvement Humain (LAMH)
Disciplines :
Human health sciences: Multidisciplinary, general & others
Author, co-author :
Schwartz, Cédric  ;  Université de Liège > Département des sciences de la motricité > Kinésithérapie générale et réadaptation
Forthomme, Bénédicte ;  Université de Liège > Département des sciences de la motricité > Rééducation du membre supérieur
Paulus, Julien ;  Université de Liège > Département des sciences de la motricité > Kinésithérapie générale et réadaptation
Kaux, Jean-François  ;  Université de Liège > Département des sciences de la motricité > Médecine physique, réadaptation et traumatologie du sport
Bruls, Olivier  ;  Université de Liège > Département d'aérospatiale et mécanique > Laboratoire des Systèmes Multicorps et Mécatroniques
Denoël, Vincent  ;  Université de Liège > Département ArGEnCo > Analyse sous actions aléatoires en génie civil
Croisier, Jean-Louis ;  Université de Liège > Département des sciences de la motricité > Kinésithérapie générale et réadaptation
Language :
English
Title :
Reliability of unipodal and bipodal counter movement jump landings in a recreational male population
Publication date :
September 2017
Journal title :
European Journal of Sport Science
ISSN :
1746-1391
eISSN :
1536-7290
Publisher :
Taylor & Francis, United Kingdom
Volume :
17
Issue :
9
Pages :
1143-1152
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 07 August 2017

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