TY  - JOUR
AU  - Helm, Norman
A2  - Helm, Norman
A2  - Prieske, Olaf
A2  - Mühlbauer, Thomas
A2  - Krüger, Tom
A2  - Chaabène, Helmi
A2  - Granacher, Urs
DB  - BISp
DP  - BISp
KW  - Armmuskulatur
KW  - Elektromyographie
KW  - Ergometrie
KW  - Judo
KW  - Kampfsport
KW  - Korrelationsanalyse
KW  - Leistung, sportartspezifische
KW  - Leistungsfähigkeit, sportartspezifische
KW  - Leistungsniveau
KW  - M. erector spinae
KW  - Rückenmuskulatur
KW  - Sportmedizin
KW  - Sportwissenschaft
KW  - Technik, sportliche
KW  - Untersuchung, vergleichende
KW  - Validität
KW  - Ziehen
LA  - eng
TI  - Validation of a new judo-specific ergometer system in male elite and sub-elite athletes
TT  - Validierung eines neuen judospezifischen Ergometersystems bei männlichen Sportlern auf höchstem und semiprofessionellem Niveau
PY  - 2018
N2  - Our experimental approach included two studies to determine discriminative validity and test-retest reliability (study 1) as well as ecological validity (study 2) of a judo ergometer system while performing judo-specific movements. Sixteen elite (age: 23 +/- 3 years) and 11 sub-elite (age: 16 +/- 1 years) athletes participated in study 1 and 14 male sub-elite judo athletes participated in study 2. Discriminative validity and test-retest reliability of sport-specific parameters (mechanical work, maximal force) were assessed during pulling movements with and without tsukuri (kuzushi). Ecological validity of muscle activity was determined by performing pulling movements using the ergometer without tsukuri and during the same movements against an opponent. In both conditions, electromyographic activity of trunk (e.g., m. erector spinae) and upper limb muscles (e.g., m. biceps brachii) were assessed separately for the lifting and pulling arm. Elite athletes showed mostly better mechanical work, maximal force, and power (0.12