2.2 Inclusion criteria
Inclusion criteria include the following: (a) Research subjects: childhood asthma who were under 18 years old. All meet the diagnostic standard of GINA childhood asthma [12], and the sex, race were not restricted. (b) Intervention: Any exercise-based PR technique, such as endurance exercise (cycling, running, yoga, basketball, Tai Chi, etc.), strength training, interval training, etc. (c) Control: conventional treatment includes medication, standard care, or routine activities without exercise. (d) Outcome:exercise capacity (measured by 6MWT), Quality of life indicators (measured by PAQLQ: total score, activity scores, symptom scores, emotional scores). Lung function (measured by FEF25-75% pred, FEV1% pred and FVC% pred). (e) Type of study: randomized controlled trial. (f) Language: English only.