CIE IGCSE Biology: 复习笔记:11.1.5 Investigating the Effects of Physical Activity on Breathing

CIE IGCSE Biology: 复习笔记:11.1.5 Investigating the Effects of Physical Activity on Breathing

Investigating the Effects of Physical Activity on Breathing

  • Exercise increases the frequency and depth of breathing
  • This can be investigated by counting the breaths taken during one minute at rest and measuring average chest expansion over 5 breaths using a tape measure held around the chest
  • Exercise for a set time (at least 3 minutes)
  • Immediately after exercising, count the breaths taken in one minute and measure the average chest expansion over 5 breaths
  • Following exercise, the number of breaths per minute will have increased and the chest expansion will also have increased

转载自savemyexams

更多IGCSE课程
翰林国际教育资讯二维码