Final answer:
True, EMST targets expiration muscles while IMT focuses on inspiration muscles. People vary in their ratio of muscle fiber types; the heart is made of cardiac muscle, not smooth; sprinting is an anaerobic exercise; the diaphragm can contract consciously; and hypoventilating is slow and deep breathing.
Step-by-step explanation:
The statement EMST works on muscles of expiration while IMT works on muscle of inspiration is true. EMST stands for Expiratory Muscle Strength Training and is designed to improve the strength of respiratory muscles involved in expiration. Conversely, IMT, or Inspiratory Muscle Training, targets the muscles used during inhalation.
To answer the supplemental true or false questions:
- 21. False. All people do not have the same proportion of slow-twitch to fast-twitch muscle fibers. This proportion can vary greatly from person to person and can be influenced by genetics and training.
- 26. False. The heart is primarily made up of cardiac muscle tissue, not smooth muscle tissue.
- 27. True. Sprinting is an anaerobic exercise because it requires short bursts of high-intensity effort which do not rely on oxygen as the primary energy source.
- 11. True. The diaphragm can contract due to conscious control as well as involuntarily due to the automatic nervous system.
- 12. False. Hypoventilating is breathing that is slower and deeper than normal, often resulting in an increased level of carbon dioxide in the blood.