There's this other man who also suffers from the same symptoms and uses a walker, but the moment he's put on a cycle, all his symptoms vanish, because it is a continuous motion.
叔父以外にも 同じ症状で苦しみ 歩行器を使っていても 自転車に乗ると 「持続的運動」になることで 症状が解消される人がいるようです