Excercise pyshiology- Long term Adaptations Flashcards
What is a long term adaptiations?
A physsiological response to the increased demand placed on the body through training. Training effects are specific to the type of training under taken ( aerobic and anaerobic) to the system where the physiological change occurs.
What is the increase myocardial contractility?
the heart is a muscle ( cardium) and responds to training by getter larger and stronger. the increase in the size of the heart enable the left ventricle to stretch more and thus fill with more blood. this increases the contractibility, resulting in increased stroke volume and increased blood supplt to the body.
Structure and funtion of the increased size of the left ventricle.
Aerobic training results in hypertrophy of the heart muscle change. increase in the size of the left ventricle. this changing theventricle walls.
why does your sv increase in contractility of the myocardium.
your heart can beat harder and can therefore eject more blood with each beat.
what happens at an increased cavity size of the left ventricle?
Allows more filling of blood and therefore, a greaater volume to be ejected
what does a Reduced heart rate allows?
allows more filling of blood and therefore a greater volume to be ejected.
What does Reduced heart rate allows what?
longer rest period between beats and more oppurtunity for blood to enter left ventricle.
What does decreased heart rate during submaximal excercise and rest do?
The heart doesnt have to work as hard to provide the requied o2 and nutrients to the muscles. decrease steady state of heart rate
why does blood colume increase ? ( plasma volume increase and red blood cell count.)
plasma increases to assist in increasing the sv so more blood ca fill during t=disolste. assist in the regulation of body temperature.
what does an increas in harmoglobin volume do?
The total amount of haemoglobin in the blood increase with aerobic training. haemoglobin is important for transporting o2 from the kungs to woking muscles.
What does a increase in cappiliarism around the heart and skeletal muscle do?
the increase capilliraism allows for improve =d blood flow,delivering more 02 to the myocardium02 consumption decreases due to a decrease in heart rate and increase in stroke volume.
why does your blood pressure decrease?
trained individuals have a lower bp, particularly systolic bp, due to capillarisation of the heart and muscles and enhanced elasticity of the arteries.
What does a increase in ventilatory effiecieny mean?
more effiecient gas exchange, results in reduced ventilation at rest ad sub maximal excercise. during maximal excersie, the ventilation of a trained athlete increases compared to an untrained individual. the increase transports more oxygen to the working muscles with aerobic training.
What is maximum oxygen consumption?
In first few minutes of excercise, oxygen intake increases significantlu, once steady state is reached o2 demand will = o2 supply. when an increase inexcercise intensity is no longer needed you have reached v02 max. at the end of excercise oxygen consumption remains high to assist in recovery process.
