In all of these studies the micro-sensor units

In all of these studies the micro-sensor units how to order are relatively unobtrusive and can be used in normal training sessions, and in some instances in competition. Recently Myklebust et al. [9] used data from five accelerometers located around a skier’s body and equipment to identify technique cycles and measure cycle rates. Algorithms were developed to process the accelerometer data and detect when poles and skis came into contact with the snow. Although this methodology allows for a robust technique analysis, the number of units and total weight of equipment used appears prohibitive for use in the daily training environment or during competition.The aim of the current study was to determine whether a single micro-sensor unit attached to the body could be used to identify effectively each of the main techniques used during cross-country skiing competition.
For such identification to be useful, the distinctive data patterns for each technique should be recognisable regardless of factors such Inhibitors,Modulators,Libraries as snow conditions, equipment used, skier speed, gradient of the terrain, standard of the skier or athlete fatigue. Successful identification of a cycle Inhibitors,Modulators,Libraries pattern for each technique would be the first step towards developing algorithms for automatic detection of cross-country skiing kinematics.2.?Experimental Section2.1. ParticipantsTwo groups of participants were used: an international group (IG) and a national Australian group (AG). IG athletes (three male, one female) had International Ski Federation (FIS) ranking points between 2.0 and 27.0 on the first ranking list for 2011/2012.
Each athlete in this group had achieved Inhibitors,Modulators,Libraries at least one podium Inhibitors,Modulators,Libraries result in FIS World Cup competition between 2009 and 2011. AG athletes (three male, one female) were all members of the Australian Cross-Country Ski Team and had FIS ranking points between 60.0 and 97.0 on the first ranking list for 2011/2012. All FIS World Cup results and rankings are available from http://www.fis-ski.com. Data were collected at Davos in Switzerland, Beitostoelen in Norway, and at Falls Creek in Australia.Ethics approval for the study was granted by the Australian Institute of Sport Ethics Committee (approval number 20102002) and the University of Canberra Committee for Ethics in Human Research (approval number 10-146). All participants Brefeldin_A were supplied with a participant information sheet prior to testing and given the opportunity to ask additional questions before signing written consent forms.
2.2. EquipmentData were collected using a commercially available micro-sensor unit (MinimaxX? S4, Catapult Innovations, Melbourne, Australia). The micro-sensor unit contained a triaxial accelerometer sellekchem (100 Hz, ��6 g), a gyroscope (100 Hz, ��1,000 d/s), a Global Positioning System (GPS) device (Fastrax, 5 Hz) and a magnetometer (30 Hz). The unit has dimensions of 2.0 �� 4.8 �� 8.5 cm and weighs approximately 67 g.

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