| 摘要 |
<p>A training apparatus (10) with a bar-shaped intermediate element (11) and identical externally rounded end pieces (12, 13) located on both ends of the bar-shaped element, wherein the end piece (12, 13) is shaped like a sphere which runs continuously into an inverse concave vaulted area (23, 24) on its side facing the bar-shaped intermediate element (11) via a bending area (25) and from thereon into the bar-like intermediate element.</p> |
