The Relationship Between Maximal Oxygen Consumption and Inspiratory Muscle Activation Pattern Under Loaded Inspiratory Muscle Tests in Healthy Adults
The Relationship Between Maximal Oxygen Consumption and Inspiratory Muscle Activation Pattern Under Loaded Inspiratory Muscle Tests in Healthy Adults
Maximal oxygen consumption, VO2max, is the gold standard to evaluate human aerobic fitness,
 which stands for the maximal capacity of cardiorespiratory system and musculoskeletal system
 to transport and utilize oxygen. Previous study showed that there is significant correlation
 between maximal oxygen consumption from cardiopulmonary exercise test and strength and
 endurance of lower extremities. In people with sedentary lifestyle, they often limited by the
 lower limb muscle performance during cardiopulmonary exercise test. Their breathing patterns
 are more irregular than athletes during cardiopulmonary exercise test. However, there is no
 study comparing the activation pattern of respiratory muscles between these two groups.
 Whether the breathing pattern in people with lower exercise capacity is less efficient under
 exertional activities still unknown. The purpose of this study is to investigate the
 relationship between maximal oxygen consumption and inspiratory muscle activation pattern in
 healthy adults.
Inclusion Criteria:

 -  Healthy adults (age > 20 years old)

 -  Be able to cooperate with the measurements of this study

 Exclusion Criteria:

 -  any clinical diagnosis that will influence the measurement, including any history of
 neuromyopathy

 -  angina, acute myocardial infarction in the previous one month

 -  pregnancy

 -  history of syncope during exercise

 -  any musculoskeletal system disorder that unable to perform cardiopulmonary exercise
 test