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F\u00fcr diese spezielle Krafttestvariante liegt wenig vergleichende Literatur vor. In dieser Arbeit werden f\u00fcr die hydraulisch geregelte (Quasi\u2011)Isokinetik Orientierungswerte f\u00fcr Rumpf- und Kniekr\u00e4fte und deren funktionelle Quotienten vorgestellt und die Reproduzierbarkeit und Vergleichbarkeit mit der Isometrie evaluiert.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Methodik<\/jats:title>\n            <jats:p>In einer Querschnittstudie wurden f\u00fcr 45 gesunde Erwachsene (21 Frauen, Alter 26,1\u202f\u00b1\u20093,9\u00a0Jahre, BMI 23,2\u202f\u00b1\u20092,5\u202fkg\/m<jats:sup>2<\/jats:sup>) Orientierungswerte (M, SD, Perzentile) f\u00fcr die isometrische und isokinetische Maximalkraft und funktionelle Quotienten (Flexion, Extension: Rumpf, Knie) f\u00fcr die Factum\u00ae Diagnosesysteme (Frei medical) ermittelt und miteinander vergleichen (Bland-Altman). Zeitaufwand und Reliabilit\u00e4t wurden f\u00fcr eine Teilstichprobe (50\u202f% Frauen) \u00fcberpr\u00fcft (ICC3.k).<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Ergebnisse<\/jats:title>\n            <jats:p>Die (Quasi\u2011)Isokinetik war zeit\u00f6konomischer (ca. 50\u202f% Zeitaufwand) und tendenziell reliabler (ICC3.k 0,736\u20130,933) als die Isometrie (ICC3.k 0,550\u20130,899). Funktionelle Flexions-Extensions-Quotienten (Isokinetik 68\u202f%, Isometrie Rumpf 63\u202f%) wiesen in etwa eine 2:3-Relation auf, au\u00dfer beim Isometrie-Knie-Quotienten (55\u202f%, ca. 1:2), wo die Flexion in Relation schw\u00e4cher in den Quotienten einging.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Diskussion<\/jats:title>\n            <jats:p>Die Testergebnisse f\u00fcr die isometrischen und (quasi\u2011)isokinetischen Krafttests sind nicht miteinander vergleichbar, was insbesondere bei den funktionellen Quotienten f\u00fcr die Praxis beachtet werden muss. Jedes System f\u00fcr sich ist reliabel, die Isokinetik hatte eine bessere Test\u00f6konomie. Die ger\u00e4tespezifischen auf das K\u00f6rpergewicht relativierten Orientierungswerte sind f\u00fcr die Praxis n\u00fctzlich.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Graphic abstract<\/jats:title>\n          <\/jats:sec>","DOI":"10.1007\/s00132-025-04670-3","type":"journal-article","created":{"date-parts":[[2025,7,17]],"date-time":"2025-07-17T18:46:03Z","timestamp":1752777963000},"page":"785-794","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Hydraulisch geregelte isokinetische Krafttestung","Hydraulically controlled isokinetic strength testing"],"prefix":"10.1007","volume":"54","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9484-1334","authenticated-orcid":false,"given":"Jan","family":"Schr\u00f6der","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Miriam","family":"Knauer","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gunnar","family":"Liedtke","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2025,7,17]]},"reference":[{"key":"4670_CR1","doi-asserted-by":"publisher","first-page":"6","DOI":"10.1302\/0301-620X.39B1.6","volume":"39B","author":"FP Morgan","year":"1957","unstructured":"Morgan\u00a0FP, King\u00a0T (1957) Primary instability of lumbar vertebrae as a\u00a0common cause of low back pain. 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