Publications of Bénédicte Forthomme
Bookmark and Share    
Full Text
See detailKnee strength measurement: Can we switch between isokinetic dynamometers?
Paulus, Julien ULiege; Schwartz, Cédric ULiege; FORTHOMME, Bénédicte ULiege et al

in Isokinetics and Exercise Science (2021), 29(3), 247-268

BACKGROUND: Isokinetic evaluation is considered the gold standard in muscle strength measurement due to its sensitivity, intra-dynamometer reproducibility and usefulness in the injury prevention screening ... [more ▼]

BACKGROUND: Isokinetic evaluation is considered the gold standard in muscle strength measurement due to its sensitivity, intra-dynamometer reproducibility and usefulness in the injury prevention screening and follow up of subjects with musculoskeletal pathologies, neurological disease or after surgical operation. However, can one switch among different isokinetic dynamometers for the purpose of knee muscles evaluation? OBJECTIVES: To comprehensively evaluate the compatibility of the isokinetic short concentric and eccentric strength evaluation protocol and of the fatigability resistance evaluation between three different isokinetic devices. METHODS: Eighteen recreationally active men underwent three isokinetic knee testing sessions on three different isokinetic devices with 7–10 days of rest between each session. Relative (Pearson’s r product-moment correlation coefficient – PCC) and absolute (standard error of measurement – SEM, Cohen effect sizes (d) and probabilistic inferences – MBI) parameters of reproducibility were determined to assess the inter-dynamometer agreement. RESULTS: For the short concentric and eccentric strength evaluation protocol, the extensors in concentric mode and the flexors in eccentric mode can be compared (eventually with transposition formulas provided) between Biodex, Con-Trex and Cybex (almost all PCC  0.80). The DCR could be compared between Con-Trex and Cybex and between Biodex and Cybex pairs (eventually with transposition formula provided). For the fatigability resistance evaluation protocol, the total sum can be compared for extensors (eventually with transposition formulas provided) for PM for all dynamometer pairs considered and, in the case of MW, only for Biodex and Con-Trex (PCC  0.80). CONCLUSIONS: Only some of the parameters derived either from the short concentric and eccentric strength evaluation protocol or the fatigability resistance evaluation protocol may be interchangeable providing transposition formulas are applied. Otherwise, isokinetic findings are largely system-dependent save some specific instances. [less ▲]

Detailed reference viewed: 47 (8 ULiège)
Full Text
See detailUpper limb field tests and tennis serve performance: which tests to choose?
Tooth, Camille ULiege; Forthomme, Bénédicte ULiege; Tubez, François ULiege et al

in Journal of Medicine and Science in Tennis (2021), 27(1),

Detailed reference viewed: 32 (2 ULiège)
Full Text
See detailOmarthrose : épidémiologie, classification et approche clinique
Moriclet, Tommy ULiege; Forthomme, Bénédicte ULiege; MAHIEU, Xavier ULiege et al

in Journal de Traumatologie du Sport (2021), 38(2), 84-93

Detailed reference viewed: 41 (5 ULiège)
Full Text
See detailFacteurs de risque de lésions d'épaule chez le sportif overhead
Tooth, Camille ULiege; Gofflot, Amandine ULiege; Schwartz, Cédric ULiege et al

in Ortho-Rhumato (2021), 19(1), 13-16

Detailed reference viewed: 41 (5 ULiège)
Full Text
See detailGardiens de but en football : caractéristiques et pathologies spécifiques
Letiexhe, Antoine ULiege; Delvaux, François ULiege; Schwartz, Cédric ULiege et al

in Journal de Traumatologie du Sport (2021), 38(1), 28-36

Goalkeepers are important players in a soccer team. Their purpose is to not take a goal. They are the only ones authorized to grab the ball with their hands. They have different physical characteristics ... [more ▼]

Goalkeepers are important players in a soccer team. Their purpose is to not take a goal. They are the only ones authorized to grab the ball with their hands. They have different physical characteristics and abilities from other players. They cover approximately half of the distance of the outfield players. They have few decisive actions (2 to 10) but it is at a high intensity (jumps, dives, sprints). Goalkeepers are different players, so they are exposed to different types of injuries. The incidence of injury is lesser than other, 4,6 per 1000 hours of soccer exposure against 8 for the out fields players. Injuries in the upper extremity are 5 times more frequent in goalkeepers than other, with longer days of absence. Appropriate training combined with specific prevention programs should contribute to the reduction of injuries and the optimization of their soccer potential. [less ▲]

Detailed reference viewed: 87 (19 ULiège)
Full Text
See detailL’union fait la force ! Le réseau francophone ReFORM est reconnu par le CIO pour faire avancer la prévention des blessures et la protection de la santé des athlètes
Edouard, Pascal; Bieuzen, François; Cabri, Jan et al

in Journal de Traumatologie du Sport (2020), 37(2), 65-66

Detailed reference viewed: 64 (13 ULiège)
Full Text
See detailInfluence of scapular dyskinesis, kinesiotaping and fatigue on tennis serve performance
Tooth, Camille ULiege; Schwartz, Cédric ULiege; Fransolet, Charlotte ULiege et al

in International Journal of Performance Analysis in Sport (2020)

Detailed reference viewed: 51 (17 ULiège)
Full Text
See detailActivation Profile of Scapular Stabilizing Muscles in Asymptomatic People. Does Scapular Dyskinesis Have an Impact on Its?
Tooth, Camille ULiege; Schwartz, Cédric ULiege; Croisier, Jean-Louis ULiege et al

in American Journal of Physical Medicine and Rehabilitation (2020)

Detailed reference viewed: 38 (9 ULiège)
Full Text
See detailKinesiotaping for scapular dyskinesis: The influence on scapular kinematics and on the activity of scapular stabilizing muscles
Tooth, Camille ULiege; Schwartz, Cédric ULiege; Colman, David ULiege et al

in Journal of Electromyography and Kinesiology (2020), 51

Scapular dyskinesis is observed in 61% of overhead athletes (Burn et al., 2016). For most of them, it remains asymptomatic. However, scapular dyskinesis is considered a risk factor for shoulder injury by ... [more ▼]

Scapular dyskinesis is observed in 61% of overhead athletes (Burn et al., 2016). For most of them, it remains asymptomatic. However, scapular dyskinesis is considered a risk factor for shoulder injury by some authors (Clarsen et al., 2014). The aim of this study is to explore the effectiveness of kinesiotaping in modifying scapular kinematics and peri-scapular muscle activity in dyskinetic athletes. The 3-dimensional position and orientation of the scapula as well as the activation of upper trapezius, lower trapezius and serratus anterior were recorded in twenty asymptomatic athletes during shoulder movements (flexion and abduction), in loaded and unloaded conditions and in three circumstances (standard, kinesiotaping 1, kinesiotaping 2). A significant decrease between 9 and 12% in upper trapezius activity was observed with kinesiotaping 1 and 2. Lower trapezius activity was slightly increased with kinesiotaping 1 while it was significantly decreased about 15–20% with kinesiotaping 2. No change was observed in serratus anterior activity, for either kinesiotaping 1 or 2. Considering scapular kinematics, both kinesiotaping 1 and 2 significantly increased posterior tilt and upward rotation. External rotation was decreased with kinesiotaping 2, in comparison to standard condition. Kinesiotaping, and especially taping 1, seems to be an effective method for changing periscapular muscle activity and scapular kinematics. [less ▲]

Detailed reference viewed: 79 (9 ULiège)
Full Text
See detailA foot/ground contact model for biomechanical inverse dynamics analysis
Van Hulle, Romain ULiege; Schwartz, Cédric ULiege; Denoël, Vincent ULiege et al

in Journal of Biomechanics (2020), 100

Detailed reference viewed: 105 (9 ULiège)
Full Text
See detailLe réseau francophone ReFORM
Edouard, Pascal; Bieuzen, François; Cabri, J et al

in Science et Sports (2020), 35(1), 61-62

Detailed reference viewed: 56 (9 ULiège)
Full Text
See detailTight shoulders: a clinical, kinematic and strength comparison of symptomatic and asymptomatic male overhead athletes before and after stretching
Schwartz, Cédric ULiege; Croisier, Jean-Louis ULiege; Bruls, Olivier ULiege et al

in European Journal of Sport Science (2020)

A tightness of the posterior structures of the throwing shoulder has been hypothesized to be associated with injuries and pain because of alterations of the scapular kinematics and muscular imbalances ... [more ▼]

A tightness of the posterior structures of the throwing shoulder has been hypothesized to be associated with injuries and pain because of alterations of the scapular kinematics and muscular imbalances. The aims of this study were to identify the clinical and biomechanical profile of symptomatic and asymptomatic overhead athletes with a tight shoulder and to evaluate the efficiency of a self-applied stretching program. Twenty male overhead athletes were recruited. Half of them reported a painful shoulder at the beginning of the study. For four weeks, the volunteers performed daily stretching exercises. Before and after the stretching program, gleno-humeral mobility, scapular kinematics, rotator muscles strength and pain were evaluated. Before stretching, the main difference between the groups was more impingement syndrome and rotator cuff tendon lesion positive tests in the symptomatic group (p<0.027, effect size = 0.51). After the program, pain reported by the symptomatic volunteers was reduced by approximately 40% and the gleno-humeral internal rotation bilateral difference was significantly reduced by 77.6% (p<0.009, effect size = 0.84). In the symptomatic group, the scapula at rest was significantly more posteriorly tilted (p=0.027, effect size = 0.69) after the stretching; a position that has been shown to limit the risk of impingement. The absence of significant differences of the profiles of the symptomatic and asymptomatic overhead athletes before stretching may indicate that the initiation of early prevention programs, including self-applied stretching, should not rely solely on biomechanical and clinical parameters and might be recommended to all players with a tight shoulder. [less ▲]

Detailed reference viewed: 48 (10 ULiège)
Full Text
See detailNormalizing gastrocnemius muscle EMG signal: an optimal set of maximum voluntary isometric contraction tests for young adults considering reproducibility
Schwartz, Cédric ULiege; WANG, François-Charles ULiege; Forthomme, Bénédicte ULiege et al

in Gait and Posture (2020), 82(October), 196-202

Background Even though most studies normalize the surface EMG signal of the gastrocnemius muscle using a single position of maximum voluntary isometric contraction (MVIC), several studies tend to indicate ... [more ▼]

Background Even though most studies normalize the surface EMG signal of the gastrocnemius muscle using a single position of maximum voluntary isometric contraction (MVIC), several studies tend to indicate that several positions are in fact needed to obtain a maximal voluntary activation (MVA) for most of the subjects. However, no combination of positions has already been described. Research question A combination of MVIC positions to normalize the EMG signal of the gastrocnemius muscle is investigated. the influence of using several positions on the reproducibility of the normalization process is evaluated. Methods Twenty healthy volunteers (45% female – 55 % male, 25.4 years (SD 4.3), 72.6 kg (SD 13.9), 1.78 m (SD 0.12)) were recruited. Six positions for MVIC were compared and the effect of several normalization combinations on a functional task (gait) was evaluated. Results Several positions are needed to obtain at least 90% of the MVA for 90% of the volunteers even though the use of a single well-chosen position (unipodal standing position with knee fully extended and ankle fully plantar-flexed) will lead to no statistically significant differences of the gait evaluation during stance phase. For each position, five repetitions of the MVIC are recommended to obtain a valid MVA. Significance This study confirms that using several MVIC positions is recommended when possible to normalize the gastrocnemius muscle EMG signal. However, in the situation of a patient where limited MVIC attempts are possible, using a single well-chosen position should not significantly influence the amplitude and the reproducibility of the measures. [less ▲]

Detailed reference viewed: 47 (6 ULiège)
Full Text
See detailRisk Factors of Overuse Shoulder Injuries in Overhead Athletes: A Systematic Review.
Tooth, Camille ULiege; Gofflot, Amandine ULiege; Schwartz, Cédric ULiege et al

in Sports Health (2020), 12(5), 478-87

CONTEXT: Shoulder injuries are highly prevalent in sports involving the upper extremity. Some risk factors have been identified in the literature, but consensus is still lacking. OBJECTIVES: To identify ... [more ▼]

CONTEXT: Shoulder injuries are highly prevalent in sports involving the upper extremity. Some risk factors have been identified in the literature, but consensus is still lacking. OBJECTIVES: To identify risk factors of overuse shoulder injury in overhead athletes, as described in the literature. DATA SOURCES: A systematic review of the literature from the years 1970 to 2018 was performed using 2 electronic databases: PubMed and Scopus. STUDY SELECTION: Prospective studies, written in English, that described at least 1 risk factor associated with overuse shoulder injuries in overhead sports (volleyball, handball, basketball, swimming, water polo, badminton, baseball, and tennis) were considered for analysis. STUDY DESIGN: Systematic review. LEVEL OF EVIDENCE: Level 3. DATA EXTRACTION: Data were extracted from 25 studies. Study methodology quality was evaluated using the Modified Coleman Methodology Score. RESULTS: Intrinsic factors, previous injury, range of motion (lack or excess), and rotator cuff weakness (isometric and isokinetic) highly increase the risk of future injuries. Additionally, years of athletic practice, body mass index, sex, age, and level of play seem to have modest influence. As for the effect of scapular dysfunction on shoulder injuries, it is still controversial, though these are typically linked. Extrinsic factors, field position, condition of practice (match/training), time of season, and training load also have influence on the occurrence of shoulder injuries. CONCLUSION: Range of motion, rotator cuff muscle weakness, and training load are important modifiable factors associated with shoulder injuries. Scapular dysfunction may also have influence. The preventive approach for shoulder injury should focus on these factors. [less ▲]

Detailed reference viewed: 105 (19 ULiège)
Full Text
See detailAlgorithm for extracting initial and terminal contact timings during treadmill running using inertial sensors
Prijot, Laura ULiege; Schwartz, Cédric ULiege; Watrin, Julien et al

Conference (2020)

Inertial measurement units (IMUs) are now considered as an economical solution for long term assessment in real conditions. However, their use in running gait analysis is relatively new and limited ... [more ▼]

Inertial measurement units (IMUs) are now considered as an economical solution for long term assessment in real conditions. However, their use in running gait analysis is relatively new and limited. Detecting the timing at which the foot strikes the ground (initial contact, IC) and the timing at which the foot leaves the ground (terminal contact, TC) gives access to many relevant temporal parameters such as stance, swing or stride durations. In this paper, we present an original algorithm to extract IC and TC timings and associated parameters from running data. These data have been measured using a newly developed IMU-based hardware system in ten asymptotic participants who ran at three speeds (slow, normal, and fast) with different running patterns (natural, rearfoot strike, mid-foot strike, and forefoot strike). This algorithm has been validated against a 200 Hz video camera based on 7056 IC and TC timings and 6861 temporal parameters. This algorithm extracted ICs and TCs with an accuracy and precision of (median [1st quartile; 3rd quartile]) 5 ms [-5 ms, 15 ms] and 0 ms [-5 ms, 5 ms], respectively. The relative errors in the extraction of stride and stance durations are -1.56 ± 3.00% and 0.00 ± 1.32%, respectively. [less ▲]

Detailed reference viewed: 94 (20 ULiège)
Full Text
See detailL’union fait la force! Le réseaux francophone ReFORM est reconnu par le CIO pour faire avancer la prévention des blessures et la protection de la santé des athlètes
Edouard, Pascal; Bieuzen, François; Cabri, Jan et al

in Swiss Sports & Exercise Medicine (2019)

Detailed reference viewed: 41 (9 ULiège)