Publications of Bénédicte FORTHOMME
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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

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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)

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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)

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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 ▲]

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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

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See detailLe réseau francophone ReFORM
Edouard, Pascal; Bieuzen, François; Cabri, J et al

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

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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 ▲]

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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 ▲]

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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), (online first), 1941738120931764

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 ▲]

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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 ▲]

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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)

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See detailThe reproducibility of fatigue-related indices of the shoulder rotator muscles: A clinical perspective
Horobeanu, Cosmin; Croisier, Jean-Louis ULiege; Paulus, Julien ULiege et al

in Isokinetics and Exercise Science (2019), 27(4), 299-306

BACKGROUND: Extensive research has been conducted related to muscle fatigue, but little attention has been given to shoulder rotator muscles. Many different formulas have been used to calculate fatigue ... [more ▼]

BACKGROUND: Extensive research has been conducted related to muscle fatigue, but little attention has been given to shoulder rotator muscles. Many different formulas have been used to calculate fatigue. Therefore, there is a need for establishing a reliable fatigue assessment protocol to further assess shoulder rotators using a suitable fatigue formula. OBJECTIVE: To study the reproducibility of two different isokinetic set-ups for assessing shoulder rotators fatigability properties and explore a possible clinical implication when different fatigue calculation formulas are used. METHODS: Forty sedentary subjects took part in this study. They were randomly assigned to either the “45∘ group” or the “90∘ group”, where the upper limb was either abducted to an angle of 45∘ or 90∘ in the frontal plane, respectively. All participants completed two testing sessions, consisting of 30 maximal concentric contractions on dominant shoulder IR and ER muscles at 180∘/s. Relative reproducibility, absolute reproducibility and fatigue indices were assessed. RESULTS: ER was different (p< 0.05) between trials (5%). Relative reproducibility was high for both muscles (ICC 0.97–0.99). Absolute reproducibility remained homogeneous with a SEM of 4–6% while the MDC varied between 11% and 16%. Fatigue formulas estimated no difference between trials (0–2%) for any muscle groups. CONCLUSIONS: Based on this study of reproducibility, both abduction set-ups may be used for assessing fatigue performance without indicating a superiority for either. [less ▲]

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See detailLes complications musculo-squelettiques du diabète
Bodet, Colin ULiege; RADERMECKER, Régis ULiege; Philips, Jean-Christophe ULiege et al

in Revue Médicale de Liège (2019), 74(11), 572-579

Le diabète sucré entraîne toute une série de complications micro- (néphropathie, rétinopathie et neuropathie) et macro-vasculaires (coronopathie, accident vasculaire cérébral et artériopathie des membres ... [more ▼]

Le diabète sucré entraîne toute une série de complications micro- (néphropathie, rétinopathie et neuropathie) et macro-vasculaires (coronopathie, accident vasculaire cérébral et artériopathie des membres inférieurs). Certaines complications sont moins connues, notamment celles qui touchent le système musculo-squelettique. Ces pathologies ne sont pas spécifiques du diabète, mais celui-ci en augmente fortement, non seulement, l’incidence, mais aussi la sévérité. Le but du présent article est de revoir les principales complications musculo-squelettiques que l’on peut rencontrer chez les personnes diabétiques, en décrire la physiopathologie, la symptomatologie et le traitement à préconiser. [less ▲]

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See detailPrévention de blessures et triathlon
Delvaux, François ULiege; Forthomme, Bénédicte ULiege

Conference (2019, October 19)

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See detailApproche des pathologies en triathlon
SANFILIPPO, Damien ULiege; Delvaux, François ULiege; Croisier, Jean-Louis ULiege et al

in Journal de Traumatologie du Sport (2019), 36(3), 160-164

Triathlon is a sport combining three disciplines (swimming-cycling and running), which is gaining popularity and causing injuries due to the consequent load of training whatever the level of practice. The ... [more ▼]

Triathlon is a sport combining three disciplines (swimming-cycling and running), which is gaining popularity and causing injuries due to the consequent load of training whatever the level of practice. The precise epidemiological data have still to be established, but it appears that: (1) the incidence reported per 1000 hours of training is relatively low given the weekly load of triathletes and the incidence increases during competitions, (2) most of injuries are overuse one and are similar to those encountered in running, the most traumatic discipline, (3) the most common lesion sites are the knee and the leg, (4) the risk factors are previous injury and training errors. Considering an ideal model of care, a precise diagnosis must be made by the doctor when the appearance of a pain has a negative impact on the sports activities. A medical care strategy is then established by the various stakeholders (doctor – physiotherapist – physical trainer and trainer) and will be adapted according to evolution. This multidisciplinary approach is essential to avoid fixed situations and therapeutic failures. © 2019 Elsevier Masson SAS [less ▲]

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See detailPrévention de blessures et triathlon
Delvaux, François ULiege; Croisier, Jean-Louis ULiege; SANFILIPPO, Damien ULiege et al

in Journal de Traumatologie du Sport (2019), 36(3), 147-152

Despite a poor literature in the area of triathlon injury prevention, guidelines can be proposed for triathletes and their coaches. In triathlon, overuse injuries of lower limbs (tendinopathies, stress ... [more ▼]

Despite a poor literature in the area of triathlon injury prevention, guidelines can be proposed for triathletes and their coaches. In triathlon, overuse injuries of lower limbs (tendinopathies, stress fractures, tibial stress syndromes) represent a large majority of all injuries. The most important risk factors are a previous history of injury and an inadequate workload. Actually, preventive measures should include: a pre-competition clinical assessment in order to identify every predisposing factor to a potential future injury; a monitoring and subsequent management of workload; physical preparation sessions with core stability and strength training; a high quality of technical movements in each of the three disciplines; a management of other potential risk factors such as inadequate life style or warm-up. Further studies are required in order to improve the quality of triathlon injury prevention. [less ▲]

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See detailFinger dexterity predicts early math skills development: Insight from 3D human motion analyses.
Neveu, Maëlle ULiege; Vossius, Line ULiege; Schwartz, Cédric ULiege et al

Poster (2019, June 18)

Children’s ability to use their fingers in numerical contexts is assumed to contribute to the development of basic mathematical skills (Fayol & Seron, 2005; Gunderson et al., 2015). Some authors pointed ... [more ▼]

Children’s ability to use their fingers in numerical contexts is assumed to contribute to the development of basic mathematical skills (Fayol & Seron, 2005; Gunderson et al., 2015). Some authors pointed to finger gnosia as a good predictor of arithmetic abilities developed some years later (Fayol, Barrouillet, & Marinthe, 1998; Noël, 2005; Penner-Wilger & Anderson, 2008) while others highlighted the relationship between manual dexterity and early numerical and arithmetical abilities (Asakawa & Sugimura, 2009, 2011, 2014; Suggate, Stoeger & Fisher, 2017). At present, the contribution of the fine motor skills to early number development has been less investigated. The aim of this study is to examine how manual dexterity contributes to early number and arithmetical processing using 3D human motion analyses, a technique providing fine-grained measures of finger dissociation and finger coordination –two components of manual dexterity. Thirty preschoolers aged between 3 and 5 years old were tested in finger dissociation and finger coordination tasks as well as in tasks assessing early numerical and arithmetic development (i.e. reciting of numbers words, counting, number words cardinal knowledge, calculating with picture support). The multiple regression analyses showed the predictive value of finger dexterity for cardinality and arithmetic skills while controlling for age differences. This result outline the tight relationship between fine motor skills and early mathematical abilities and suggest that finger coordination could have decisive influences on the use of finger-based strategies in support to the development of numerical concepts and early arithmetic in young children. [less ▲]

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