. "4"^^ . . "1"^^ . . "The purpose of this study has been to develop motor test for abdominal muscles performance based on modern statistical methodology. The Guttman scale and the Rasch model have been used to estimate scale values parameters. The Janda's muscle function test has been used to propose scale items. The difficulties of item execution have been evaluated by the Rasch model. The sample of examinees consisted of 40 young volleyball players (18 girls and 22 boys), mean age 13 years (SD 0.6 months). Softwares Winsteps 3.47 and Statistica 5.5 have been used for data analysis. The scale values difficulties ranged between 3.18 and 2.51 logit. It means that the scale values cover underlying continuum very well. The results of this study provided sit-ups scale that can be used for abdominal muscle strength. However, additional measurement and analysis is needed. The item statistics should be recalibrated on a large sample of examinees." . "RIV/49777513:23420/06:00000002" . "12" . "Development of a scale for abdominal muscle testing" . "Development of a scale for abdominal muscle testing"@en . . . "\u010Cl\u00E1nek se zab\u00FDv\u00E1 konstrukc\u00ED \u0161k\u00E1ly pro testov\u00E1n\u00ED b\u0159i\u0161n\u00EDho svalstva. Jako z\u00E1klad byl pou\u017Eit Jand\u016Fv funk\u010Dn\u00ED svalov\u00FD test, kdy jednotliv\u00E9 testy byly pou\u017Eity jako \u0161k\u00E1lov\u00E9 polo\u017Eky, jejich\u017E obt\u00ED\u017Enost byla kvantifikov\u00E1na prost\u0159ednictv\u00EDm Raschova modelu. Vypo\u010D\u00EDtan\u00E9 vlastnosti \u0161k\u00E1ly byly vyhodnoceny jako vyhovuj\u00EDc\u00ED a prezentovan\u00E1 \u0161k\u00E1la tak m\u016F\u017Ee b\u00FDt pou\u017Eita jako diagnostick\u00FD n\u00E1stroj pro testov\u00E1n\u00ED v ter\u00E9nu."@cs . "\u010Cepi\u010Dka, Ladislav" . . . . . "Research yearbook" . "118" . "S" . "[40BBBD59CBBE]" . . "Konstrukce \u0161k\u00E1ly pro testov\u00E1n\u00ED b\u0159i\u0161n\u00EDho svalstva"@cs . "Development of a scale for abdominal muscle testing" . . "RIV/49777513:23420/06:00000002!RIV07-MSM-23420___" . . . . "471273" . "Development of a scale for abdominal muscle testing"@en . "1730-7988" . "0" . "1"^^ . . "PL - Polsk\u00E1 republika" . "Konstrukce \u0161k\u00E1ly pro testov\u00E1n\u00ED b\u0159i\u0161n\u00EDho svalstva"@cs . "23420" . "abdominal muscle testing; Rasch model; Guttman scale; children"@en . "The purpose of this study has been to develop motor test for abdominal muscles performance based on modern statistical methodology. The Guttman scale and the Rasch model have been used to estimate scale values parameters. The Janda's muscle function test has been used to propose scale items. The difficulties of item execution have been evaluated by the Rasch model. The sample of examinees consisted of 40 young volleyball players (18 girls and 22 boys), mean age 13 years (SD 0.6 months). Softwares Winsteps 3.47 and Statistica 5.5 have been used for data analysis. The scale values difficulties ranged between 3.18 and 2.51 logit. It means that the scale values cover underlying continuum very well. The results of this study provided sit-ups scale that can be used for abdominal muscle strength. However, additional measurement and analysis is needed. The item statistics should be recalibrated on a large sample of examinees."@en .