PT - JOURNAL ARTICLE AU - T D Noakes TI - Rating of perceived exertion as a predictor of the duration of exercise that remains until exhaustion DP - 2008 Jul 01 TA - British Journal of Sports Medicine PG - 623--624 VI - 42 IP - 7 4099 - http://bjsm.bmj.com/content/42/7/623.short 4100 - http://bjsm.bmj.com/content/42/7/623.full SO - Br J Sports Med2008 Jul 01; 42