For now, sumo training in stables around the Kanto region is continuing, albeit in a limited fashion.
The Japan Sumo Association this week asked stables to refrain from engaging in practice bouts and butsukari (pushing exercises) during their morning sessions. Instead they are to concentrate on leg raises, squats and various other basic movements and exercises outside the ring that don’t involve physical contact.
Given that COVID-19 is transmitted through the air, and that virtually all sumo practice areas are small, poorly ventilated rooms, it’s doubtful that the latest measures will have much impact. That’s especially true when, after training, rikishi sit side by side while eating, then sleep in one large communal room.