6533b7d5fe1ef96bd1265057
RESEARCH PRODUCT
Measurement of take-off forces in ski jumping
P. V. KomlMikko Virmavirtasubject
Measurement methodNormal forcebusiness.industryPhysical Therapy Sports Therapy and RehabilitationStructural engineeringKinematicsSki jumpingmedicine.disease_causeForce curvesJumpingmedicineJumpOrthopedics and Sports MedicinebusinessMathematicsdescription
The force measuring system constructed under the frost rail inrun track element was used for measurement of take-off forces in ski jumping. Several calibrations of the normal forces made on several days showed no significant differences between the calibration sessions. Loading the different places of the track element showed differences less than 5% between the places for the total 10-m distance and less than 3% for the straight take-off table. Two international-level ski jumpers served as subjects during the testing of the system. Further preliminary results from 2 different performances techniques are presented. The force curves of subjects displayed totally different patterns: Two distinct peaks for subject MN (Fmax 25.46 ± 0.80 NkgBW−1) and only one peak for subject JH (Fmax 27.97 ± 0.98 N kgBW−1). A slight correlation was found between the Fmax and the length of the jump for one subject
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-01-30 | Scandinavian Journal of Medicine & Science in Sports |