PT - JOURNAL ARTICLE AU - R. Macdonald TI - Flexibility—How To Understand It, How to Achieve It AID - 10.1136/bjsm.26.1.70-a DP - 1992 Mar 01 TA - British Journal of Sports Medicine PG - 70--70 VI - 26 IP - 1 4099 - http://bjsm.bmj.com/content/26/1/70.2.short 4100 - http://bjsm.bmj.com/content/26/1/70.2.full SO - Br J Sports Med1992 Mar 01; 26