Effect of using different physical exercise with anaerobic effort on heart rate

. (Hr) ( 400 50% ) . (11) / (400 ) 50% 50% . (Hr) 400 .The Heart rate (Hr) reflect athlete condition so it could been important pointer in case of rest and work which we are belt on this asset of the training program with all it's different details , the most important one is the convenient recovery for (Hr) to specific level in order to begin a new exercise .Our research problem is, a great number of coaches trainers aid not care to the (Hr) when they using different parts of their athletes bodies to exercise, so they gave an equal period of recovery to the athlete when using all the muscle or less gropes of muscle so my research aimed to recognize or discovering the (Hr) level through three tides of anaerobic exercises (hands, legs, maximum running for 400m).The researchers performed a three test and measurements (bench press, back squat till fatigue with 50% of maximum strength, in both, running 400m using highest speed as test).The researchers concludes that there is a significant difference in (Hr) after anaerobic exercise between the tests above, the highest level of (Hr) was after 400m running and the lesser level was to the test of bench press.