Suwannarong, B. .; Sukserm, T. .; Somkhane, P. . THE EFFECTIVENESS OF PROGRAM FOR THE PREVENTION OF KNEE OSTEOARTHRITIS FROM PRAY SITTING AMONG ELDERLY BY COMMUNITY PARTICIPATION SONG PLUEAI SUBDISTRICT, NAMON DISTRICT KALASIN PROVINCE. JBER 2020, 6, 313-324.