1. KEY KNOWLEDGE KEY SKILLS
functions responsible for short term (acute) responses to physical activity in the cardiovascular, respiratory and muscular systems
Participate in data collection, analyse and report on the acute responses occurring at the cardiovascular, respiratory and muscular systems in response to exercise.
Robert Malpeli - Balwyn High School 2010

2. Robert Malpeli - Balwyn High School 2010

3. Only occur for the duration of exercise and recovery
Acute responses :
Only occur for the duration of exercise and recovery
Are dependent on the intensity, duration and type of exercise being undertaken
Involve the respiratory, cardiovascular and muscular systems working together to supply more energy / ATP and oxygen to working muscles and then again to remove any waste products
Robert Malpeli - Balwyn High School 2010

4. Acute Respiratory responses
↑ Ventilation (air breathed in & out per minute)
Ventilation (litres/min) = Tidal Volume (litres) x Respiratory rate (breaths/min)
↑Tidal Volume ( amount of inspired & expired air per breath)
↑ Respiratory Rate (breaths per minute)
Ventilation vs. submaximal and maximal exercise
Robert Malpeli - Balwyn High School 2010

5. ↑ Gas Exchange / Diffusion
Gases such as oxygen and carbon dioxide always move from areas of high pressure to areas of low pressure.
Lungs
oxygen concentration is high so it moves from the alveoli into the blood stream to be taken to muscles
carbon dioxide concentration in the blood stream is high so it moves into the alveoli to be exhaled
Muscles (opposite concentrations to lungs)
oxygen concentration is low so it moves from the blood stream to be taken in by the muscles
carbon dioxide concentration in the muscles is high so it moves into the blood stream to be transported to the lungs and exhaled
Robert Malpeli - Balwyn High School 2010