Objective of the study was to analyze and classify technical execution errors in the modern elite ski jumping sport. Methods and structure of the study. We have collected, for three competitive seasons, the formal training logs and competitive records of the World Ski Jumping Cup events to mine detailed data on the in-run speed, jump distance and technical execution errors. On the whole we have analyzed 863 jumps on different ramps for the three seasons, both in the winter and summer events (on artificial hills). The ski jumping data were produced by the relevant metering tools including speed sensors, video captures, Dartfish statistical processing system, and expert valuations. Results and conclusion. We found none elite ski jumper immune to the jump phase execution errors in fact, with the in-run and landing phases by far leading in the numbers of errors. We found no significant differences of the national elites in the in-run and take-off errors, with the latter clearly dominating in the error statistics. Modern elite ski jumpers have developed multiple errors-correcting tools and skills - that may be trained by a range of special technical execution adjustment exercises. The error-correction skills will be mastered with due sensitivity to the technical error origin. The origin is often found in the poorly designed training systems. Technical and distance scores in the modern elite ski jumping sport are highly sensitive to the technical errors in every jump phase. We found the Russian team`s errors dominated by the cyclic (rollover) errors that snowball in the later jump phases. Efforts to eliminate such errors as early as possible will help seriously scale down the subsequent error rates and improve the techniques on the whole with the obvious benefits for the technical and distance scores.
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