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.