Home›Browse›Superman🌐DeutschEnglishDeutschFrançaisItalianoSvenskaTiếng ViệtTürkçeРусскийالعربيةفارسی한국어中文日本語EntityQ928057· pop 14· linked from 70 articlesSupermanSign in to saveAlso known as hyperextension, Back extensionEigengewichtübungWikidata factsImageRoman chair (hyperextension) animation.gifShow 1 more factCommons categoryBack extensionvia Wikidata · CC0Available in 13 languages日本語РусскийItalianoالعربيةCzechSvenskaTiếng ViệtTürkçeUkrainianWelshفارسی한국어via Wikidata sitelinks · CC0