- Joined
- Nov 19, 2017
https://www.sports.ru/tribuna/blogs/ternovblogfk/2237837.html
IMO it is extremely interesting statistics - albeit in Russian (you still can use google translate) but with clear enough graphics and tables. It covers so far juniors from this season (mostly russian and japanese) and author promises to make article about seniors later. Measurement methodology is explained in detail in his earlier articles from last season about the same jumps traits (however there were only height and rotation speed then) of juniors and seniors (you can found them if you click on author name there and scroll down the list). In short - mostly it was done with large amount of video frames measurements and some formulas from geometry and physics applied.
Enjoy! :agree:
P.S.: it will be amusing to see how many myths of "true jump technique" skaters admirers would be destroyed - since almost all ladies skaters on almost all jumps ALWAYS PREROTATES to at least 100-150 degree on average In other words if one would want to downgrade jumps due to prerotation - ladies even now would be limited to double jumps only except couple of lutzes/flips from couple of jumpers.
P.P.S.: I am not agree with author's final conclusions since he clearly is not willing to include ladies quads jumps height to affect the standings (probably he thinks it's too unfair or something) - but oh, well :sarcasm:
P.P.P.S: I like his reasoning about jump traits meaning - in relation to UR and GOE. Height affects GOE positively and lessens UR probability, rotation speed just lessens UR probability, prerotation affecting GOE negatively (only in theory though, in practice - almost never) and lessens falls and UR probability, delayed rotation affects GOE positively and increase UR and falls probability. So in the end all the most "correct and beautiful" jumpers jumps with the most inefficient and nonoptimal technique - resulting in frequent UR and falls, and very hard to rotate cleanly 3-3 combinations. And even they can't jump this way Toeloop, Loop and Salchow.
IMO it is extremely interesting statistics - albeit in Russian (you still can use google translate) but with clear enough graphics and tables. It covers so far juniors from this season (mostly russian and japanese) and author promises to make article about seniors later. Measurement methodology is explained in detail in his earlier articles from last season about the same jumps traits (however there were only height and rotation speed then) of juniors and seniors (you can found them if you click on author name there and scroll down the list). In short - mostly it was done with large amount of video frames measurements and some formulas from geometry and physics applied.
Enjoy! :agree:
P.S.: it will be amusing to see how many myths of "true jump technique" skaters admirers would be destroyed - since almost all ladies skaters on almost all jumps ALWAYS PREROTATES to at least 100-150 degree on average In other words if one would want to downgrade jumps due to prerotation - ladies even now would be limited to double jumps only except couple of lutzes/flips from couple of jumpers.
P.P.S.: I am not agree with author's final conclusions since he clearly is not willing to include ladies quads jumps height to affect the standings (probably he thinks it's too unfair or something) - but oh, well :sarcasm:
P.P.P.S: I like his reasoning about jump traits meaning - in relation to UR and GOE. Height affects GOE positively and lessens UR probability, rotation speed just lessens UR probability, prerotation affecting GOE negatively (only in theory though, in practice - almost never) and lessens falls and UR probability, delayed rotation affects GOE positively and increase UR and falls probability. So in the end all the most "correct and beautiful" jumpers jumps with the most inefficient and nonoptimal technique - resulting in frequent UR and falls, and very hard to rotate cleanly 3-3 combinations. And even they can't jump this way Toeloop, Loop and Salchow.