Question

How and why would vigorous exercise cause changes in: tidal volume, total lung volume, residual volume, IRV, ERV and vital capacity? When answering this question use the knowledge from the lectures and your own thought process. Don’t get caught up trying to search web sites for answers and led astray into obscure scenarios. This is a straightforward question and marks will not be given for answers that do not follow the directions above

Answer 1

First a vigorous exercise is not a regular kind of thing or not included in our daily activities of living ( ADL). To achieve certain changes example like to increase muscle mass , improve cardiovascular endurance in our body the only way is to EXERCISE. Here the next point is what kind of exercises & howmuch of it we have to do to get the changes is very important. For example if you increase number of time your results were towards endurance / if you concentrated on weight it towards strength. So depends on your exercises only our body will respond and every time we doing exercises like a work rather than a rest our body needs ENERGY.

EVen to be at rest also we require / use some amount of energy is called Resting energy expenditure. So we require some more energy to do activities / exercises. So next question is how we get the required energy is through inhalation /O2 & our blood will circulate the oxygen all over the body will helps the cells to get the energy. This is the actual basic thing which behinds the all exercise / physical activities.

now come to the point of Vigorous exercise - any kind of high intensity exercises - in same way our body will started work for getting more & more energy as it is a vigorous / high intensity exercise. Here the main role is to our CARDIOPULMONARY SYSTEM which has to do work maximum to give the fuel...to restore the energy in a continue manner throughout the entire exercise time. So to get more oxygen have to inhale more TIDAL VOLUME..have to increase the store in lung ( have expand the lung more LUNG CAPACITY...have to clear co2 from lungs RESIDUAL) .

CONCLUSION : As our lungs has to give the fuel to the muscles (to continue their work) it works more & these works are very high in vigorous exercises and so it causes changes in all parameters of lungs.