French Institute of Sport

Tremblay-en-France, France

French Institute of Sport

Tremblay-en-France, France
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Milazzo N.,French Institute of Sport | Milazzo N.,University Paris - Sud | Farrow D.,Victoria University of Melbourne | Farrow D.,Australian Institute of Sport | Fournier J.F.,French Institute of Sport
Archives of Budo | Year: 2014

Background & Study Aim: In combat sport, anticipation is an indispensable quality in order to avoid being hit. The aim of this study is knowledge about the efficacy of a “no-feedback” video-based perceptual training program for enhancing the decision-making of skilled male karate fighters. Material and Methods: This study examined the effectiveness of a “no-feedback” video-based perceptual training program to enhance decision-making of skilled karate fighters (n = 6) compared to control group (n = 6) and placebo group (n = 6). Participants in the intervention group completed six training sessions where they reacted to temporally occluded video footage of typical combat situations during which they had to mime, as rapidly and accurately as possible, the action which they would have carried out in the observed situation. Decision time and decision accuracy were assessed pre- and post intervention and during acquisition. Number of action rules was recorded pre and post the implementation of the program. Results: Participants who received “no-feedback” video-based perceptual training significantly enhanced their decision accuracy and decision time during the period of the program and from pre- to post test compared with both control and placebo group. Moreover, the absence of an increase in the number of verbalized action rules after the video training suggests that this approach may have promoted implicit learning. Conclusions: “No-feedback” video-based perceptual training program is an effective approach to enhance decision-making of skilled karate fighters without the accrual of explicit knowledge. © ARCHIVES OF BUDO.


Bieuzen F.,French Institute of Sport | Borne R.,French Institute of Sport | Toussaint J.-F.,French Institute of Sport | Hausswirth C.,French Institute of Sport
Applied Physiology, Nutrition and Metabolism | Year: 2014

The objective of this study was to test how low-frequency electrical stimulation (LFES; Veinoplus Sport (AdRem Technology, Paris, France)) of the calf muscles affects recovery indices compared with 2 other commonly used recovery methods (active, ACT; passive, PAS). The tests used assessed predominantly anaerobic performance after short-term (15 min) recovery, and the kinetics of blood markers. Fourteen highly trained female handball players completed 2 Yo-Yo Intermittent Recovery tests (level 2; YYIR2) separated by a 15-min recovery period. During recovery, 1 of 3 recovery methods (ACT, LFES or PAS) was randomly selected. Performance (i.e., distance run) was measured at the end of each YYIR2 test. Blood lactate, pH, bicarbonate concentrations, heart rate, respiratory gas exchange and tissue saturation index for the lateral gastrocnemius were recorded. LFES showed a very likely beneficial effect on performance during the second YYIR2 relative to PAS and a possible beneficial effect relative to ACT (distance Pre vs. Post; LFES: -1.8%; ACT: -7.6%; PAS: -15.9%). Compared with PAS recovery, LFES and ACT recovery clearly showed a faster return to baseline for blood lactate, pH and bicarbonate concentrations during the recovery period. LFES of the calf muscles and, to a lesser extent, ACT recovery appear to effectively improve short-term recovery between 2 bouts of exhausting exercises. These methods could be of benefit if applied during half-time, for sports involving successive rounds, or where only a limited recovery period is available.


Milazzo N.,French Institute of Sport | Farrow D.,Victoria University of Melbourne | Farrow D.,Australian Institute of Sport | Fournier J.F.,Paris West University Nanterre La Défense
Perceptual and Motor Skills | Year: 2016

This study investigated the effect of a 12-session, implicit perceptual-motor training program on decision-making skills and visual search behavior of highly skilled junior female karate fighters (M age=15.7 years, SD=1.2). Eighteen participants were required to make (physical or verbal) reaction decisions to various attacks within different fighting scenarios. Fighters’ performance and eye movements were assessed before and after the intervention, and during acquisition through the use of videobased and on-mat decision-making tests. The video-based test revealed that following training, only the implicit perceptual-motor group (n=6) improved their decisionmaking accuracy significantly compared to a matched motor training (placebo, n=6) group and a control group (n=6). Further, the implicit training group significantly changed their visual search behavior by focusing on fewer locations for longer durations. In addition, the session-by-session analysis showed no significant improvement in decision accuracy between training session 1 and all the other sessions, except the last one. Coaches should devote more practice time to implicit learning approaches during perceptual-motor training program to achieve significant decisionmaking improvements and more efficient visual search strategy with elite athletes. © The Author(s) 2016.

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