Conséquences de la chirurgie de transposition du muscle grand dorsal

in Abstract book de la 5ème Journée Belge d’Isocinétisme du GIBL (2005, December)

Factors correlated with volleyball spike velocity

in American Journal of Sports Medicine (2005), 33(10), 1513-1519

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 ▲]

Adapted eccentric training in chronic lateral epicondylitis rehabilitation

in Computer Methods in Biomechanics & Biomedical Engineering (2005, September), 8(Supp 1), 55-56

A comparative study of isokinetic training using two brands of dynamometers

in Abstract Book of the XIV International Congress on Sports Rehabilitation and Traumatology: «The Accelerated Rehabilitation of the Injured Athlete» (2005, April)

Shoulder isokinetic assessment: a critical analysis

in Isokinetics & Exercise Science (2005, March), 13(1), 59-60

Consequences of latissimus dorsi transfer on shoulder function

in Isokinetics & Exercise Science (2005, March), 13(1), 69-70

Muscle activation after ACL reconstruction: influence of the resistance pad position

in Isokinetics & Exercise Science (2005, March), 13(1), 16-17

Activation EMG pattern during isokinetic knee flexion-extension assessment: Comparison between healthy subjects and chronic pain patients

in Isokinetics & Exercise Science (2005), 13(1), 5-11

La rééducation isocinétique dans le tennis elbow ?

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

Shoulder isokinetic profile after Latarjet's technique

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 ▲]