Shoulder flexibility and strength in elite girl tennis players with and without history of shoulder pain

This study aimed at comparing the glenohumeral (GH) range of motion, and shoulder and scapular muscle strength in elite girl tennis players with (group HoSP; n=15) and without (group H; n=16) history of shoulder pain. The GH joint range of motion in internal (IROM) and external rotation (EROM), as well as the maximal isometric strength of eight shoulder and scapular muscles were bilaterally assessed in 31 girl players. The results showed an increased IROM in HoSP, suggesting a laxity, which may contribute to humeral translation motions in the glenoid cavity at critical tennis positions. The HoSP group also presented a weakness in serratus anterior muscle strength, which may create improper motions of the scapula during the tennis strokes. These findings suggested that stretching and strengthening rehabilitative programs may be specifically developed for the young girl athletes involved in an intensive overhead activity practice

The Alestle - Vol. 58 No. 52 - 04/11/2006

Vol. 58 No. 5

PROPHYLACTIC EVALUATION OF SHOULDER PROPRIOCEPTION IN ELITE SWIMMERS

It is suggested that poor shoulder proprioception contributes to shoulder pain in swimmers. However, there is a lack of studies describing the measurement method for shoulder proprioception. The purposes of this preliminary study was to investigate the scapular position depending on arm scaption as a first step in the development of a measurement method for three-dimensional shoulder proprioception. An asymptomatic young adults participated in this study. His scapular rotation were measured as a function of arm position during scaption in two consecutive days. The results showed that scapular rotations are not a reproducible function of humerus elevation. Those findings suggested that the assessement of shoulder proprioception should rely on the evaluation of both gleno-humeral and scapulo-thoracic joints to be valid

Nachhaltigkeit im industriellen Umfeld

Im Rahmen der Lehrveranstaltung "Nachhaltigkeit im industriellen Umfeld" im Masterstudiengang Umwelt- und Verfahrenstechnik der Hochschulen Konstanz und Ravensburg-Weingarten wurde 2015 eine studentische Fachkonferenz durchgeführt. Die Studierenden entwickelten in Einzelarbeit oder als Zweierteam Konferenzbeiträge zu folgenden Themen: - Innovationen und Spannendes aus dem Bereich der Energieerzeugung und -wandlung - Aspekte der Schließung von Stoffkreisläufen und Vermeidung von Schadstoffeinträgen in die Umwelt - Chancen und Herausforderungen Nachwachsender Rohstoffe bei verschiedenen Einsatzmöglichkeiten sowie Themen der Nachhaltigkeit in der Landwirtschaft - verschiedene Blickwinkel auf das Thema Wasser (von der Abwasserreinigung bis zum Wasserkonsum der Konsumenten) - die Betrachtung spezifischer Industrien und Unternehmen sowie deren Werkzeuge zur Umsetzung von Nachhaltigkeit Die Ergebnisse der studentischen Fachkonferenz zur „Nachhaltigkeit im industriellen Umfeld“ werden in der vorliegenden Publikation präsentiert

Plans d'expériences en carré latin pour l'analyse globale de la performance en ski de fond

Quantification de l'influence de la rugosité et du fartage des semelles de ski dans la performance de patinage (skating) en ski de fond. Facteurs expérimentaux retenus : niveau d'expertise du skieur, topographie (usinage et intensité d'abrasion), farts de glisse utilisés

Étude épidémiologique des blessures chez les cordistes français. État des lieux des conditions d’exercice et typologie des blessures

Ce rapport se veut accessible au plus grand nombre. Il suit une construction classique : après une introduction qui reprend le contexte, les enjeux, les choix méthodologiques opérés et une photographie rapide de la population enquêtée, chaque partie est dissociable et vise à décrire 1) les conditions d’exercice de la profession, 2) le mode de vie des cordistes, 3) leurs blessures, et enfin 4) les relations entre ces conditions et les blessures. Depuis quelques années, la profession (au sens large) des travailleurs sur cordes a initié des études pour mieux comprendre ce métier et ses spécificités ; elle a mis en place des dispositifs de formation et de prévention pour protéger les cordistes. Ce travail s’inscrit dans ce mouvement d’intérêt et de développement de connaissances de la profession. Il cherche à objectiver les perceptions de terrain, voire à rompre avec les présupposés afin de proposer à chacun des pistes de réflexion et des axes d’amélioratio

Epidemiological study of injuries among French rope access technicians An analysis of working conditions and injury typology

This report is intended to be accessible to the widest possible audience. It has a standard structure: an introduction describing the context, the issues at hand, the methodological choices made and a quick snapshot of the population surveyed. Each part is dissociable and attempts to describe 1) working conditions in the profession, 2) the lifestyle of rope access technicians, 3) their injuries, and 4) the relationships between these factors and the injuries sustained. In the last few years, the rope access sector (in the wider sense) has commissioned a number of studies to better understand the profession and its specificities. It has also set up training and risk prevention programmes to protect rope access workers. Our research is in line with these efforts to raise the profile of the profession and develop a better understanding of the sector. It seeks to form an objective picture of perceptions on the ground and perhaps even to dispel any preconceptions, so as to offer readers food for thought and suggest possible improvement area

Scapulothoracic kinematics during scaption after one year of tennis practice in elite girl players

40ème congrès de la Sociéte de Biomécanique francophone, PARIS, FRANCE, 28-/10/2015 - 30/10/2015The unilateral and repetitive nature of tennis involves shoulder sport-specific adaptations. The extreme humeral external rotation associated to the arm elevation at the end of the cocking phase during tennis serve repeats the natural contact between the greater tuberosity and the posterosuperior part of the glenoid cavity (Mihata et al. 2012). An improper positioning of the scapula onto the thorax may exacerbate the area and/or the pressure of this contact, and posterosuperior and superior impingement can occur (Mihata et al. 2012). Studies focusing on scapular motion are recent, and few information are available on the alterations in scapulothoracic kinematics with tennis playing. Furthermore, intensive tennis practice may begin at early age to potentially attain the professional level, but the knowledge on the scapular adaptations of immature body remains undeveloped. This study therefore aimed to bilaterally compare the scapular kinematics during scaption before and after one year of tennis practice in elite girl players

Nouvelle approche méthodologique pour choisir le fart de glisse adapté aux conditions nivologiques en ski alpin

Mise en place d'un protocole expérimental sur le terrain afin de tester l'efficacité de farts de glisse : méthodologie pour aider les préparateurs de skis à choisir le fart de glisse approprié aux conditions nivo-météorologiques. Utilisation de la méthode des plans d'expérience (plans de mélanges) couplée à un système descripteur de la neige