Inertial sensor for objective evaluation of swimmer performance

In this paper, the development of an accelerometer based sensor and algorithms to extract useful information for evaluation of sportsman performance in swimming sport is presented. Several parameters were identified as useful and feasible to estimate from registered acceleration curves: ldquonumber of strokes per laprdquo, ldquoinstantaneous stroke raterdquo also durations of various swimming process intervals, periods and phases. Possible applications of extracted parameters were discussed.