Jan Cabri

• PhD
• Scientific Director at Luxembourg Institute of Research in Orthopedics, Sports Medicine and Science (LIROMS)

Introduction The objective assessment of shoulder function is important for personalized diagnosis, therapies and evidence-based practice but has been limited by specialized equipment and dedicated movement laboratories. Advances in AI-driven computer vision (CV) using consumer RGB cameras (red-blue-green) and open-source CV models offer the potent...

Background Acute ankle sprains represent one of the most common traumatic injuries to the musculoskeletal system. Many individuals with these injuries experience unresolved symptoms such as instability and recurrent sprains, leading to chronic ankle instability (CAI), which affects their ability to maintain an active lifestyle. While rehabilitation...

Purpose In recent years, anterior cruciate ligament (ACL) injuries have been frequently observed in ski jumping. However, available data in this discipline are very scarce. Therefore, the purpose of this study was to investigate whether an ACL injury in elite‐level ski jumping limits the performance level after ACL reconstruction (ACLR). Methods B...

Purpose: Evaluate the current state of sports injury prevention perception, knowledge and practice among sports medicine professionals located in Western Europe and involved in injury prevention. Methods: Members of two different sports medicine organizations (GOTS and ReFORM) were invited to complete a web-based questionnaire (in German and in...

For clinical movement analysis, optical marker-based motion capture is the gold standard. With the advancement of AI-driven computer vision, markerless motion capture (MMC) has emerged. Validity against the marker-based standard has only been examined for lightly-dressed subjects as required for marker placement. This pilot study investigates how d...

The aim of this project was to create a national database to determine sports-related sudden cardiac event (SCE) burden in Luxembourg. Systematic data collection was carried out from 2015 until 2019 (5 years). Cases of SCE met the following criteria: (1) any major cardiac adverse event, (2) occurring during or until one hour after a sports activity...

Purpose: The current criterion to evaluate 30-second side hop (SH) test performance following anterior cruciate ligament reconstruction (ACLR) is limited to the absolute number of jumps, neglecting the quality of execution. This study aims to assess the relevance of spatiotemporal and force plate derived parameters during the SH test. Methods: Seve...

Objective Evaluate knowledge on concussion management in three countries participating to the ReFORM group. Methods In this cross-sectional survey, the target population consisted of eighty-five participants of an educational conference on concussion's management given in Switzerland, Luxembourg and Belgium in September 2019. Thirty-eight particip...

Cushioning systems in running shoes are used assuming that ground impact forces relate to injury risk and that cushioning materials reduce these impact forces. In our recent trial, the more cushioned shoe version was associated with lower injury risk. However, vertical impact peak force was higher in participants with the Soft shoe version. The pri...

The International Olympic Committee (IOC) has supported athletes’ health protection1 by funding research centres dedicated to prevention and treatment of sports-related injuries and illnesses.2 After establishing four centres in 2009,2 the IOC research centres network expanded to 9 institutions in 20143 and the 2019 round recognised 11 centres.4 He...

INTRODUCTION Sports practice is like the Roman God Janus: it has two faces. On one hand, regular physical activity reduces cardiovascular risk factors and improves life expectancy. But on the other hand, the risk of serious heart problems is increased during and immediately after exercise [1,2]. Sports-related sudden cardiac death in the general po...

Background: Pelvic girdle pain is prevalent during pregnancy, and women affected report weight-bearing activities to be their main disability. The Stork test is a commonly used single-leg-stance test. As clinicians report specific movement patterns in those with pelvic girdle pain, we aimed to investigate the influence of both pregnancy and pelvic...

In a world where technology is assuming a pervasive role, sports sciences are also increasingly exploiting the possibilities opened by advanced sensors and intelligent algorithms. This paper focuses on the development of a convenient, practical, and low-cost system, SwimBIT, which is intended to help swimmers and coaches in performance evaluation,...

Core stability is important to many functional and athletic tasks. Motion variability has been proposed as a measure to characterize core stability. Based on motor learning theories, the current study hypothesized that variability and stability of core movements show a U-shaped relationship and further investigated whether functional range of motio...

Background: Walking difficulties are common among pregnant women with pelvic girdle pain. This cross-sectional study investigated the influence of pelvic girdle pain, pregnancy and speed on spatiotemporal and trunk, pelvic and hip kinematics during gait in the 2nd trimester of pregnancy. Methods: Three-dimensional gait analysis at self-selected...

The influence of anthropometric measurements, age, sex, and activity level have been found to influence tests of dynamic postural control such as the star excursion balance test (SEBT). The hand reach star excursion balance test (HSEBT) measures different aspects of dynamic postural control. The purpose of the present study was to explore the influ...

Objective: To present a case of a right-handed professional tennis player with a left internal abdominal oblique muscle tear sustained while serving. We document the progress of a rehabilitation program consisting of primarily kinetic chain isokinetic strength training where symmetrical measurements (<10% side difference) of force and dynamic post...

The relationship between dynamic postural control, functional mobility and team handball throwing performance, velocity and accuracy, is largely unknown. The hand reach star excursion balance test (HSEBT) is a full kinetic chain assessment tool of these factors. Specifically, L135 and R135 (extension) reaches elicit joint movement combinations simi...

Background: The Timed Up and Go (TUG) test, a standardized functional mobility test, has been proposed as a physical performance-based measure in pregnant women with pelvic girdle pain (PGP). Objectives: This cross-sectional study aimed to investigate physical function by the use of TUG in pregnant women with PGP compared to asymptomatic pregnan...

This book constitutes the thoroughly refereed post-conference proceedings of the 4th and 5th International Congress on Sports Science Research and Technology Support, icSPORT 2016 and 2017, held respectively in Porto, Portugal, on November 7-9, 2016 and in Funchal, Madeira, Portugal, on October 30-31, 2017. The 13 revised full papers (7 papers in 2...

Tests of dynamic postural control eliciting full-body three-dimensional joint movements in a systematic manner are scarce. The well-established star excursion balance test (SEBT) elicits primarily three-dimensional lower extremity joint movements with minimal trunk and no upper extremity joint movements. In response to these shortcomings we created...

The aim of this study was to adapt and validate the Physical Therapy Outpatient Satisfaction Survey (PTOPS) for the Portuguese culture. This version was obtained by a forward/backward translation, consensus panels, and pre-test. The Portuguese PTOPS was administered to 76 physical therapy outpatients in 10 health services. The content analysis (pan...

Patients undergoing total knee arthroplasty (TKA) often ask when they can safely resume driving. Answering this question is an important matter, which might entail legal and insurance issues. In the present review, the following questions are addressed: What is the quality of the existing literature on this issue? When does the Brake Response Time...

Measuring dynamic postural control and mobility using task-based full-body movements has been advocated. The star excursion balance test (SEBT) is well-established, but it does not elicit large upper body joint movements. Therefore, the hand reach star excursion balance test (HSEBT) was developed. The purpose of the current study was to assess the...

Breaststroke swimmers at all levels perform the common drill exercise of two leg kicks to one arm pull at submaximal effort for improving competitive performance through optimizing the timing between the arms and legs. PURPOSE: The aim of this study was to investigate whether this exercise can lead to a more beneficial timing and muscle activation...

Rate of perceived exertion (RPE) has been shown to be highly correlated with heart rate based training load calculations. However, there is limited information whether RPE can also be used to estimate muscle activation during exercise. PURPOSE: Therefore, we aimed to assess the relationship between integrated electromyography (iEMG) and RPE in bre...

[This corrects the article DOI: 10.1371/journal.pone.0168545.].

We are pleased to introduce the fourth Journal Club. This edition is focused on several relevant studies published in the last years in the field of movement analysis, chosen by our Editorial Board members. We hope to stimulate your curiosity in this field and to share with you the passion for the sport seen also from the scientific point of view.

Amongst reduced gravity simulators, the lower body positive pressure (LBPP) treadmill is emerging as an innovative tool for both rehabilitation and fundamental research purposes as it allows running while experiencing reduced vertical ground reaction forces. The appropriate use of such a treadmill requires an improved understanding of the associate...

Excel table of dataset. Dataset including all the individual mean data per testing running session and for each stabilized and transition running periods of interest. (XLS)

Unweighting- and reloading-induced changes in the temporal, kinetic and kinematic stride characteristics at the end of the transition phase and once stabilized at 80BW. (A): Unweighting-induced changes (Δ% INITstab) in the temporal, kinetic and kinematic stride characteristics at the end of the transition phase (UNWtr) and once stabilized (UNWstab)...

Purpose: Investigating the muscle activation patterns and coactivation with the support of kinematics in some of the world's best breaststrokers and identify performance discriminates related to national elites at maximal effort. Methods: Surface electromyography was collected in eight muscles from four world-class (including two world champions...

The aims of this study were to describe muscular activation patterns and kinematic variables during the complete stroke cycle (SC) and the different phases of breaststroke swimming at submaximal and maximal efforts. Surface electromyography (sEMG) was collected from eight muscles in nine elite swimmers; five females (age 20.3 ± 5.4 years; Fédératio...

The Hand reach star excursion balance test (HSEBT) show moderate to high inter- and intrarater reliability. Specifically, interclass correlation coefficients (ICC) ranged from 0.80-0.97 for both intra- and interrater reliability.

The present study aimed to compare muscle coordination strategies of the upper and lower limb muscles between beginners and elite breaststroke swimmers. Surface electromyography (EMG) of eight muscles was recorded in 16 swimmers (8 elite, 8 beginners) during a 25 m swimming breaststroke at 100% of maximal effort. A decomposition algorithm was used...

Joint range of motion (ROM) is commonly measured using goniometry with accepted reference values such as American Academy of Orthopedic Surgeons (AAOS) (Greene & Heckman, 1994). The procedures of obtaining these measures are based on unidirectional and uniplanar passive testing of isolated joint motions in supine, prone or seated positions. The rel...

Introduction Quantification of muscle activity can provide coaches and athletes with a better understanding of coordination, co-activation, muscle intensity and the relative muscle contribution to the overall propulsion in complex dynamic movements such as breaststroke (BR) swimming. It is also important in order to understand movement economy at t...

Introduction Investigations of muscle action patterns in swimmers are almost exclusively performed on both sexes together. In breaststroke, potential differences in muscle action patterns between sexes are unknown. The aim of this study is to investigate muscle activity during the stroke cycle phases in breaststroke (BR) at three levels of intensit...

Purpose: In running, body weight reduction is reported to result in decreased lower limb muscle activity with no change in the global activation pattern (Liebenberg et al. in J Sports Sci 29:207-214). Our study examined the acute effects on running mechanics and lower limb muscle activity of short-term unweighing and reloading conditions while run...

Introduction As gravity plays an essential role in terrestrial locomotion, several studies have investigated the effects of reducing gravity on locomotion kinematics and kinetics (for a review, Sylos-Labinis et al. 2014). On a lower body positive pressure (LBPP) treadmill, 3 min of unweighing have been demonstrated to be sufficient for updating the...

This book constitutes thoroughly revised and selected papers from the Second International Congress on Sports Science Research and Technology Support, icSPORTS 2014, held in Rome, Italy, in October 2014. The 8 thoroughly revised and extended papers presented in this volume were carefully reviewed and selected from originally 131 submissions.

The University of Western Ontario Questionnaire for Musculoskeletal Conditions in Senior Golfers (MSK Golfers) was developed in Canada because of a lack of knowledge concerning musculoskeletal conditions directly related to golf play and warm-up, although the high injury incidence in golf practice. This lack of epidemiological measures also exists...

Background: Pediatric Quality of Life Inventory (PedsQL) is a measure to assess health-related quality of life (HRQoL) in children and adolescents. It is formed by 23 items adapted to children age and includes a parent proxy report version. With four multidimensional subscales and three summary scores, it measures health as defined by WHO. The con...

Breaststroke swimmers perform technique and drill exercises in their daily training in order to improve their competitive breaststroke swimming. This has previously been looked upon in different kinematic studies, but no study combined this with surface electromyography. One male world champion breaststroker swam regular breaststroke at 60% and 100...

This study proposes a new method for identifying the different phases of the leg kick in the modern breaststroke technique. Previous analysis models assume that all breaststroke kicks finish with feet actively coming together during the insweep followed by a ‘flat glide’ and active knee bend to start the recovery. Using the previous models for the...

To analyze the effects of a single bout and repeated bouts of stretching on indirect markers of exercise-induced muscle damage. A randomized controlled clinical trial at a university human research laboratory was conducted. Fifty-six untrained males were randomly divided into four groups. (I) a single stretching group underwent a single bout of str...

Joint mobility, the range of motion utilized to accomplish tasks, is fundamental to activities of daily living and athletic performance. Conventional tests of joint mobility are often performed joint-by-joint in supine or prone positions (Frost et al., 2013; McGill, Andersen & Horne, 2012). This approach to joint mobility testing has important conc...

This randomized controlled trial tested the effects of a specially designed strength and endurance training on the independence and quality of life in lung cancer patients in stages IIIA/IIIB/IV during palliative chemotherapy. Between August 2010 and December 2011, 46 patients were randomized into two groups receiving either conventional physiother...

Humidity and temperature have an influence on physical and psychological performance. Especially in exhaustive endurance sports, high environmental temperatures can increase body temperature and decrease endurance capacity. To avoid a strong decrease of performance the body must adjust rapidly by increasing heat loss through evaporation, radiation...

The aim of this study was to compare the performance (throwing velocity of the ball) and kinematics of overarm throwing with the circular and whip-like wind up in elite handball players. Twenty-two elite handball players (11 men and 11 women) conducted both types of throws. The ball release velocity, maximal ball acceleration, maximal velocity of t...

Objectives The aim of this study was to translate and adapt the Tampa Scale for Kinesiophobia to the Portuguese language and culture [TSK-PT], and validate its use in Portuguese patients with chronic low back pain [CLBP].Methods The procedures were performed following published international guidelines. Patients with CLBP were recruited to complete...

Background: The shoulder external rotator muscles and the different portions of the trapezius muscle have never been studied in exclusivity. However, the literature has provided several exercises which have been used in this study. Purpose: To quantify electromyographic activity of the shoulder external rotator muscles and the upper, middle and low...

Objective: To establish the anthropometrical characteristics and the hand grip strength of the Swiss junior and elite judo national team. The measured values were compared with data from the literature. Methods: 24 members, 19 males (23.01 ± 4.91 years) and five females (19.95 ± 2.02 years), were measured. The following anthropometric measurements...

Objective: To establish the anthropometrical characteristics and the hand grip strength of the Swiss junior and elite judo national team. The measured values were compared with data from the literature. Methods: 24 members, 19 males (23.01 ± 4.91 years) and five females (19.95 ± 2.02 years), were measured. The following anthropometric measurements...

Objective: The aim of this study was to evaluate the use of miniaturized electromagnetic trackers (1 × 0.5 × 0.5 cm) fixed on teeth of the maxilla and mandible to analyse in vivo the 3D kinematics of the temporomandibular joint (TMJ). A third sensor was fixed to the forehead, and a fourth sensor was used as a stylus pointer to detect several anato...

Objective: To establish the anthropometrical characteristics and the hand grip strength of the Swiss junior and elite judo national team. The measured values were compared with data from the literature. Methods: 24 members, 19 males (23.01 ± 4.91 years) and five females (19.95 ± 2.02 years), were measured. The following anthropometric measuremen...

The main objective of this study was to determine if an acute bout of static stretching of the quadriceps muscle affects the sense of joint position, the threshold to detect passive movement, and the sense of force. Thirty young, healthy men (age : 22.1 ± 2.7 years) were randomly divided into two groups. The Stretching Group (n=15) underwent stretc...

The Intermittent and Constant Osteoarthritis Pain (ICOAP) [1] questionnaire for the knee (a version for the hip is also available) is a patient-reported pain measure which was developed to assess patients with knee osteoarthritis (OA). Constant and intermittent pain were regarded as relevant by OA patients in a focus group study [2]. The developmen...

Introduction A limited number of studies have investigated the muscle activation during breaststroke swimming through the use of surface electromyography (sEMG). No previous studies have investigated kinematic variables in human swimming using motion capture (mo-cap) 3D with automatic tracking (AT). The aim of this study was therefore to investigat...

Until recently, 3D tracking of human swimming motion capture (mo-cap) from an image has been conducted using interactive tracking (IT). New technology within automatic tracking (AT) in water uses computer algorithms to identify and track small reflective markers attached to the swimmer. The purpose of this study was to show that 3D AT can be used f...

9033 Background: This RCT tested the effect of a specially designed strength and endurance training on the independence in activities of daily living and quality of life in lung cancer patients staged IIIA/IIIB/IV while receiving palliative chemotherapy. The aim was to break the vicious circle created through the connection of physical inactivity a...

Exhaustive and/or unaccustomed exercise, mainly involving eccentric muscle actions, induces temporary muscle damage, evidenced by delayed onset muscle soreness (DOMS) and decreased muscle function. Different strategies to recover from its signs and symptoms have been studied and, as a result, a significant number of articles on this issue have been...

The aim of the study was to review systematically the literature available on electromyographic (EMG) variables of the golf swing. From the 19 studies found, a high variety of EMG methodologies were reported. With respect to EMG intensity, the right erector spinae seems to be highly activated, especially during the acceleration phase, whereas the o...

The aim of this study was to investigate the throwing velocity and kinematics of overarm throwing in team handball of elite female and male handball players. Kinematics and ball velocity of a 7 metre-throw in eleven elite male (age 23.6 ± 5.2 yr, body mass 87.0 ± 6.8 kg, height 1.85 ± 0.05 m) and eleven elite female (age 20.3 ± 1.8 yr, body mass 69...

After total knee arthroplasty (TKA) patients often ask when they can resume car driving. This question was the aim of some studies in the past, however no study was found on the possible effects of different surgery techniques on brake response time (BRT). A randomized controlled trial on the effects of two surgery techniques (minimally invasive vs...

Motion capture (mo-cap) of swimmers have traditionally been done using manual digitalization of body points. New technology makes automatic 3D mo-cap available for aquatic purposes, and necessitates methodological studies. Purpose: The aim of this study was to pioneer a 3D automatic mo-cap system used on human swimmers and to find the increased dra...

The purpose of this study was to investigate the reliability of surface electromyography (sEMG) measurements after being submerged (swimming) for 60-90 minutes. Isometric maximal voluntary contractions (MVC) on land and in water were collected of eight muscles in three males and three females (mean age 22.5±4.5 years). A paired samples t-test showe...

Introduction: The management of type III acromioclavicular joint dislocations, originally classified by Rockwood and Tossy, is still controversial. Purpose of this literature research was to evaluate the rehabilitation success of type III injury after conservative versus operative treatment concerning strength, function and pain of the shoulder. Th...

The purpose of this cross sectional study was to estimate the contributions of patient characteristics to variation in joint-specific and generic health status in knee osteoarthritis (OA) patients referred for physical therapy. The Portuguese Knee injury and Osteoarthritis Outcome Score (KOOS) and Medical Outcomes Study - 36 item Short Form (SF-36)...