References of "Croisier, Jean-Louis"
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See detailLe déséquilibre de force musculaire favorise-t-il la survenue d’une lésion ?
Croisier, Jean-Louis ULg

in Actes du 2ème Colloque Médico-sportif « Entre laboratoire et terrain » (Liège) (2005, February)

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See detailFactors correlated with volleyball spike velocity.
Forthomme, Bénédicte ULg; Croisier, Jean-Louis ULg; Ciccarone, Guido et al

in American Journal of Sports Medicine (2005), 33(10), 1513-9

BACKGROUND: Spike effectiveness represents a determining element in volleyball. To compete at a high level, the player must, in particular, produce a spike characterized by a high ball velocity ... [more ▼]

BACKGROUND: Spike effectiveness represents a determining element in volleyball. To compete at a high level, the player must, in particular, produce a spike characterized by a high ball velocity. HYPOTHESIS: Some muscular and physical features could influence ball velocity during the volleyball spike. STUDY DESIGN: Descriptive laboratory study. METHODS: A total of 19 male volleyball players from the 2 highest Belgian national divisions underwent an isokinetic assessment of the dominant shoulder and elbow. Ball velocity performance (radar gun) during a spike test, morphological feature, and jump capacity (ergo jump) of the player were measured. We tested the relationship between the isokinetic parameters or physical features and field performances represented by spike velocity. We also compared first-division and second-division player data. RESULTS: Spike velocity correlated significantly with strength performance of the dominant shoulder (internal rotators) and of the dominant elbow (flexors and extensors) in the concentric mode. Negative correlations were established with the concentric external rotator on internal rotator ratio at 400 deg/s and with the mixed ratio (external rotator at 60 deg/s in the eccentric mode on internal rotator at 240 deg/s in the concentric mode). Positive correlations appeared with both the volleyball players' jump capacity and body mass index. First-division players differed from second-division players by higher ball velocity and increased jump capacity. CONCLUSION: Some specific strength and physical characteristics correlated significantly with spike performance in high-level volleyball practice. CLINICAL RELEVANCE: Our results could provide useful information for training management and propose some reflections on injury prevention. [less ▲]

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See detailProfil isocinétique des muscles fléchisseurs et extenseurs du genou dans une population d’athlètes sauteurs
Jidovtseff, Boris ULg; Croisier, Jean-Louis ULg; Mordant, B. et al

in Science & Sports (2005), 20(5-6, OCT-DEC), 304-307

Introduction. - This study explored concentric and eccentric profile of knee musculature in a jumpers population. Relationships between isokinetic assessment and field tests performances have also been ... [more ▼]

Introduction. - This study explored concentric and eccentric profile of knee musculature in a jumpers population. Relationships between isokinetic assessment and field tests performances have also been explored. Materials. - Jumpers population presented higher knee flexors performances in concentric and eccentric mode and superior knee extensors strength in eccentric. Significant correlations between isokinetics and field tests results were exclusively observed with athletes quadriceps performances. A very high correlation (r = 0.93) was found between the second bound relative performance of the ten multijumps test and eccentric quadriceps relative peak torque. Conclusion. - Jumpers training may favour a specific muscular development. The knee extensors eccentric strength may be a major factor in the athletic performance. (c) 2005 Elsevier SAS. Tous droits reserves. [less ▲]

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See detailTesting knee extension and flexion strength at different ranges of motion: an isokinetic and electromyographic study.
Reichard, L. B.; Croisier, Jean-Louis ULg; Malnati, M. et al

in European Journal of Applied Physiology (2005), 95(4), 371-6

The main objective of this study was to explore the mechanical and electrical output of thigh muscles derived from a range of motion (RoM) of 90 degrees (0-90 degrees flexion, LR) and the three successive ... [more ▼]

The main objective of this study was to explore the mechanical and electrical output of thigh muscles derived from a range of motion (RoM) of 90 degrees (0-90 degrees flexion, LR) and the three successive RoMs: 0-30 degrees (SR1), 30-60 degrees (SR2) and 60-90 degrees (SR3). Thirteen men took part in the study. In view of the torque-velocity relationship and in order to render the test conditions as equivalent as possible, LR was tested at 90 degrees /s while the corresponding velocity for all SRs was 30 degrees /s. The findings indicated very good agreement between LR and SR2 in terms of absolute strength (particularly the concentric), within muscle eccentric to concentric strength ratios, between muscles (agonist to antagonist) strength ratios and the normalized IEMG (expressed in muV/Nm). An agreement was also noted between the mean eccentric peak torque of the knee flexors at LR and SR1 and between the mean eccentric peak torque of the knee extensors at LR and SR3. However, in general there was a lesser agreement between LR and SR1 or SR3. It is suggested that testing thigh muscles in the middle sector of knee motion (SR2) yields strength and EMG data that are close and well correlated with those derived from testing the knee along the commonly used (0-90 degrees ) RoM. [less ▲]

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See detailIsocinétisme et prévention lésionnelle musculaire
Croisier, Jean-Louis ULg

in Hérisson, C.; Rodineau, J. (Eds.) Muscle traumatique et mécanique (2005)

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See detailEquilibre musculaire agonistes / antagonistes de l’épaule : relation avec les performances de terrain
Forthomme, Bénédicte ULg; Forthomme, L.; Croisier, Jean-Louis ULg

in Actes du 2ème Colloque Médico-sportif « Entre laboratoire et terrain » (2005)

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See detailLa rééducation isocinétique dans le tennis elbow ?
Croisier, Jean-Louis ULg; Foidart-Dessalle, Marguerite ULg; Crielaard, Jean-Michel ULg et al

in Abstract book du Colloque « La Pathologie du Tennis » du Centre Hospitalier Peltzer – La Tourelle (CRF) (2005)

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See detailShoulder isokinetic profile after Latarjet's technique
Forthomme, Bénédicte ULg; Willems, Serge; Hurlet, Sandrine ULg et al

in Isokinetics & Exercise Science (2005), 13(1), 71-76

The following procedures were performed on 23 patients (15 of them males): a shoulder strength isokinetic evaluation of the internal (IR) and external (ER) rotators (with the shoulder 45 degrees and 90 ... [more ▼]

The following procedures were performed on 23 patients (15 of them males): a shoulder strength isokinetic evaluation of the internal (IR) and external (ER) rotators (with the shoulder 45 degrees and 90 degrees abducted in the frontal plane), a passive range of motion measurement, a Rowe score and a scanner exam. These patients had previously undergone open coracoid transposition using Latarjet's technique according to two different surgical procedures: a tenotomy (n = 6) or a splitting (n = 17) of the subscapularis muscle approach. In our retrospective study, the period of time between surgery and assessment was an average of 30 months. The average Rowe score was 89 on a scale of 100, with a good pattern of passive mobility. The isokinetic data showed an external rotator weakness (in all testing conditions), most notably at 60 degrees/s in 45 degrees of abduction position (p < 0.001 - 12.2%). By contrast, the internal rotators were only significantly (p < 0.05) impaired (8.2%) at 60 degrees/s in the 90 degrees of abduction position. Consequently, the external/internal rotator ratio (ERAR) was reduced in the 45 degrees of abduction installation only, highlighting the influence of testing position on the isokinetic results and therefore on the shoulder muscle profile. Surgical technique comparison revealed that only the tenotomy procedure entailed an IR deficit (17%) measured at 45 degrees of abduction installation. Shoulders (n = 5) presenting a fatty degeneration of the subscapularis muscle >= stage II (corresponding exclusively to the tenotomy surgical approach) showed an internal rotator weakness (19%) measured in 45 degrees of abduction. Patients (n = 13) without subscapularis fatty degradation (corresponding solely to the horizontal splitting approach) did not develop any impairment of strength in internal rotators. Furthermore, no correlation between mobility pattern and strength impairment was observed in the study. [less ▲]

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See detailFacteurs influençant la performance de terrain en volley-ball
Forthomme, Bénédicte ULg; Croisier, Jean-Louis ULg; Ciccarone, Guido et al

in Actes du XIVe Congrès National Scientifique de la Société Française de Médecine du Sport (2004, November)

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See detailComparison of plyometric training combined with electrical stimulation versus plyometric training alone on vertical jump and sprint performance
Lehance, Cédric ULg; Vanderthommen, Marc ULg; Croisier, Jean-Louis ULg et al

in Abstract Book of the 4th International Conference on Strength Training (Serres, Greece) (2004, November)

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See detailIsocinétisme et prévention lésionnelle musculaire chez le footballeur professionnel
Croisier, Jean-Louis ULg; Ganteaume, S.; Ferret, J. M.

in Actes du XIVe Congrès National Scientifique de la Société Française de Médecine du Sport (2004, November)

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See detailInfluence of a short time specific strength training on iso-inertial performances
Jidovtseff, Boris ULg; Croisier, Jean-Louis ULg; Scimar, N. et al

in Abstract Book of the 4th International Conference on Strength Training (Serres, Greece) (2004, November)

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See detailPrevention of hamstring injuries in football players
Croisier, Jean-Louis ULg

in Congress book of Brucosport – 23rd Congress of Sports Medicine of the AZ Sint-Jan AV (2004, October 15)

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See detailProtocole excentrique adapté au traitement des épicondylites chroniques
Croisier, Jean-Louis ULg; Forthomme, Bénédicte ULg; Crielaard, Jean-Michel ULg et al

in Annales de Réadaptation et de Médecine Physique (2004, October), 47(7), 502-503

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See detailExploration des séquelles de lésion du nerf sus-scapulaire
Forthomme, Bénédicte ULg; Croisier, Jean-Louis ULg; Mazza, Laetitia et al

in Annales de Réadaptation et de Médecine Physique (2004, October), 47(7), 438

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See detailAnalysis of the volleyball spike: relationships between several parameters and the speed of the ball
Cloes, Marc ULg; Croisier, Jean-Louis ULg; Barsin, M. et al

in Proceedings of the 2004 Pre-Olympic Congress Sport Science through the Ages (2004, August)

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See detailAnalysis of the volleyball spike: relationships between several parameters and the speed of the ball
Cloes, Marc ULg; Croisier, Jean-Louis ULg; Barsin, M. et al

Poster (2004, August)

In volleyball, the spike's effectiveness is a determining element of the team's success. To perform at a high level, a player must be able to produce spikes characterized by a speed of the ball that ... [more ▼]

In volleyball, the spike's effectiveness is a determining element of the team's success. To perform at a high level, a player must be able to produce spikes characterized by a speed of the ball that increase the defence's uncertainly. A high speed spike needs technical and muscular qualities. ... [less ▲]

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See detailEpidemiology of lesions in high-level competition judo
Zinzen, E.; Vanbergen, Johanne; Clarijs, Jan Pieter et al

in Abstract Book of the 9th Annual Congress of the European College of Sports Science (2004, July)

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See detailAtteinte du nerf sus-scapulaire : corrélations entre l’évaluation isocinétique et l’ENMG
Goffinet, Estelle ULg; Mazza, Laetitia; Forthomme, Bénédicte ULg et al

in Neurophysiologie Clinique = Clinical Neurophysiology (2004, May), 34

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