The group that received LAF massage in the first stage was labeled LAF group and the one receiving BNC massage in the first stage was labeled BNC group. https://strikegenix.com/%EC%8A%A4%EC%9B%A8%EB%94%94%EC%8B%9C-%EC%9A%B8%EC%82%B0-%ED%98%81%EC%8B%A0%EC%A0%81%EC%9D%B4%EA%B3%A0-%ED%8E%B8%EC%95%88%ED%95%9C-%EB%A7%88%EC%82%AC%EC%A7%80-%EA%B2%BD%ED%97%98/