Effects of exercise

2. Regular weight-bearing exercise can increase this, helping bones become stronger.
3. RATE cardiovascular exercise can cause the heart to work more efficiently, meaning this can decrease at rest.
5. Regular exercise can improve this, meaning the heart and circulatory system become better at supplying working muscles with oxygen.
8. An increase in muscle size resulting from appropriate resistance training.
9. This happens to muscles when they have been working repeatedly and can no longer maintain the same level of performance.
10. Regular resistance training can increase the maximum force a muscle can produce.
11. The muscles become this as blood flow increases during exercise.
12. The skeleton and these structures move to allow the body to perform exercise.
13. Regular training can improve the ability to continue exercising before becoming excessively tired.
14. The amount of air breathed in or out during each breath increases during exercise.
15. Training can improve the ability of muscles to continue working without becoming excessively tired.
17. The number of times your heart beats each minute increases during exercise.
18. The muscles need more of this substance to release energy during exercise.

1. The amount of blood pumped by the heart each minute increases during exercise.
4. The rate at which you breathe increases when exercise becomes more intense.
6. Training can improve how effectively the respiratory system takes in and uses oxygen.
7. The growth of additional small blood vessels around working muscles can improve oxygen delivery.
16. Regular training can increase the amount of blood pumped by the heart with each beat.