Changing levels performance biology body action crobertsonx
Biology, The Body in Action, subtopic
Continuous or rapidly repeated contraction of muscles results in
Muscle fatigue results from a lack of ______ and a build up of ______ ____
During vigorous exercise muscles cannot get enough oxygen to enable them to break _______ down completely to __________ and water. Instead they respire anaerobically, breaking glucose down to ______ ____.
As the levels of ______ ____ build up, the muscles become quickly fatigued.
During exercise both ______ rate and ______ breathing rate increase
The breathing rate increases in order to get more ______ into the bloodstream.
The pulse rate increases because the heart must beat _____ in order to deliver the blood to the muscles more quickly.
________ ____ is the time taken for the body to return to normal levels of pulse rate, breathing rate and lactic acid.
In athletes, during exercise the pulse rate, breathing rate and lactic acid level rise ____ than in an untrained person.
After exercise the recovery time will be ____ for a fit person than for an unfit person. ________ ____ can be used as an indication of physical fitness.
Training improves the efficiency of the _____ and ________
As a person trains, their fitness _________ and their recovery time after exercise _________