From Friday, May 29, 2020, the COVID-19 measures will be further relaxed, which means that indoor training will again be permitted under certain conditions. More details can be found in the following documents:

Tischtennis:
https://www.oettv.org/de/news/downloadcenter/sonstiges/docdown-sonstige-dokumente-GX9DL0BTYpXhs

Volleyball:
http://www.volleynet.at/corona-update-und-klarstellung-zur-aktuellen-verordnung-fuer-den-sport/