Search results for "DICS"
showing 10 items of 2714 documents
Perception, Observation et Action
2015
L’observation d’actions est une caracteristique preponderante de l’Homme et de l’animal et participe grandement au developpement des habiletes motrices. Le fait de voir une tierce personne realiser un mouvement active le reseau des neurones miroirs, reconnus comme la base neurophysiologique de la comprehension des actions d’autrui. Dans cette revue, nous discutons, dans un premier temps, des reponses centrales et comportementales sous-jacentes a l’observation. Ensuite, nous decrivons les benefices et les limites d’un (re)apprentissage par observation. Enfin, nous presentons de nouvelles approches de la simulation d’actions combinant l’observation a d’autres operations mentales d’origine int…
Stimulation magnétique transcrânienne et imagerie motrice : corrélats neurophysiologiques de l’action mentalement simulée
2013
La stimulation magnetique transcrânienne (SMT) est devenue en a peine trois decennies un outil scientifique experimental majeur dans l’etude du systeme nerveux chez l’homme. Dotee de nombreux atouts methodologiques (technique non-invasive et a haute resolution temporelle), la SMT est complementaire des outils d’exploration fonctionnelle du cerveau et elle a permis d’accumuler un nombre considerable de donnees dans le domaine des neurosciences cognitives et comportementales. Cet article de synthese presente les recentes avancees en cognition motrice et plus particulierement en imagerie motrice, un champ de recherche dans lequel la SMT a ete grandement utilisee pour explorer l’implication des…
Einflu� eines apparativen Totraums bei trainierten und untrainierten Versuchspersonen auf die Atem-und Blutgase unter Hypoxie und k�rperlicher Belast…
1974
Der Einflus eines zusatzlichen apparativen Totraumes von 500 ml auf den Arterialisierungseffekt in der Lunge wird an je 8 trainierten und untrainierten Probanden untersucht. Zur Abgrenzung des Totraumeffektes dient eine Kontrolluntersuchung an 6 Versuchspersonen, bei denen der mestechnisch notwendige zusatzliche Totraum lediglich 48 ml betragt. Die Untersuchung wird bei Luftatmung sowie bei Hypoxieatmung in verschiedenen Belastungsstufen (0 bis 300 Watt) durchgefuhrt. Sie liefert folgende Ergebnisse: 1. Die endexspiratorischen und arteriellen O2-Partialdrucke lassen keinen arteri-alisierungsmindernden Totraumeinflus erkennen. Bei einer Belastung von 300 Watt unter gleichzeitiger Hypoxieatmu…
Specialized Movement on the Rowing Ergometer and Post-workout Changes in Selected Peripheral Blood Parameters - a Case Report.
2018
Rowing is a sport discipline, which requires extreme physical strength and endurance and appropriate aerobic and anaerobic capacity as well. However, when the workout intensity and load is very high, exercise is associated with temporary changes in cellular metabolism and the immune system. The study included one male rower aged 28 years - the highly-skilled and experienced athlete. We determined basic cardiorespiratory fitness measures, complete blood count, and 24 clinical chemistry parameters including relevant biochemical and haematological parameters and matrix metaloproteinases activities. Maximal exercise on the rowing ergometer induced 2-fold increase in absolute counts of all leuko…
E-cycling and health benefits: A systematic literature review with meta-analyses
2022
The objective of the present study is to review and meta-analyze the effect of E-cycling on health outcomes. We included longitudinal experimental and cohort studies investigating the effect of E-cycling on health outcomes. The studies were identified from the seven electronic databases: Web of Science, Scopus, Medline, Embase, PsycINFO, Cinahl and SportDiscus and risk of bias was assessed with the revised Cochrane Collaboration Risk of Bias Tool (RoB2). We performed meta-analysis with random effects models on outcomes presented in more than one study. Our study includes one randomized controlled trial, five quasi experimental trials and two longitudinal cohort studies. The trials included …
Heart rhythm assessment in elite endurance athletes: A better method?
2022
IntroductionArrhythmias also occur among elite endurance athletes. Conventional diagnostic tools for assessment of arrhythmias suffer from limited availability and usability challenges, particularly under the demanding training conditions of an elite athlete. Among endurance athletes, there is a need for out-of-hospital monitoring to enhance detection of arrhythmias under conditions that are relevant and potentially provocative of underlying pathology. The Norwegian patch ECG247 Smart Heart Sensor has been developed to simplify the assessment of heart rhythm disorders. The current study aimed to evaluate the ECG247 Smart Heart Sensor function and usability in an elite athlete environment.Me…
Mechanical power and segmental contribution to force impulses in long jump take-off
1979
Changes in total mechanical work, its partitioning into different energy states, mechanical power, force-time characteristics, force impulses of body segments and mass center's pathway characteristics during long jump take-off were investigated on four national and six ordinary level athletes. Both cinematographic and force-platform techniques were used. The data showed that the national level jumpers had higher run-up and higher take-off (release) velocities in horizontal and vertical directions. In addition, they were able to utilize efficiently the elastic energy stored in the leg extensor muscles at take-off impact. This was seen in high support leg eccentric and concentric forces, whic…
Modic changes-Their associations with low back pain and activity limitation: A systematic literature review and meta-analysis.
2018
Background Previous systematic reviews have reported positive associations between Modic changes (MCs) and low back pain (LBP), but due to their narrow scope and new primary studies, there is a need for a comprehensive systematic review. Our objectives were to investigate if MCs are associated with non-specific LBP and/or activity limitation and if such associations are modified by other factors. Methods A protocol for this review was registered at PROSPERO prior to commencing the work (PROSPERO record: CRD42015017350). The MEDLINE, CINAHL and EMBASE databases were searched for relevant studies from first record to June 15th 2016. Prospective or retrospective cross-sectional cohort studies …
Reasons for officiating soccer : the role of passion-based motivations among Norwegian elite and non-elite referees
2015
Les raisons de l’arbitrage en football : Le role des motivations basees sur la passion parmi les arbitres elite et non-elite norvegiensCette etude examine les raisons de l’investissement des arbitres de football elite et non-elite norvegiens. Quatre-vingt-trois arbitres elite et 44 non-elite ont complete un questionnaire en ligne (SurveyXact) interrogeant leurs trois principales raisons d’exercer la fonction d’arbitre de football. Les donnees ont ete obtenues par epoche, intuition et description de leurs differentes raisons. Trois principales categories descriptives emergent (pourcentage elite/non-elite) : les motivations liees a la passion (57/25 %), les motivations sociales (25/25 %) et l…
Swimrun: An emerging new endurance sport
2018
International audience; The swimrun is a new endurance team-sport based on two persons swimming and running alternatively through open water and mostly trails. The aim of this study was to analyse participation and performance trends for males, females and mixed duo team at the ÖTILLÖ Swimrun race (10 km open-water swimming and 65 km trail running). During the 2012–2016 period, the mean total time performance of the best athletes at the ÖTILLÖ Swimrun decreased significantly by 17 min/year for males, 40 min/year for mixed and 59 min/year for females duo, respectively. The difference in performance between the best males and females duo (26 ± 15%) was significantly greater compared to the di…