Exclusion criteria
thoracic kyphosis, COVID-19 disease
DISEASE
The exclusion criteria included: 1- the diagnosis of any neurological or orthopedic disease during the study, 2- unwillingness to continue participation in this study, 3- contracting the COVID-19 disease again, 4- the occurrence of any medical problem affecting the safe implementation of the exercise protocol by the patient, 5- the need for starting physiotherapy during the study.In the experimental group, the subjects and their closest family members were practically trained in the clinic to perform the exercises correctly, including corrective and breathing exercises with supervising and monitoring the health staff. After the health staff ensured exercises were learned correctly by participants, an educational video (a CD) and illustrated instructions were provided to them. Participants' performance was periodically monitored. The experimental group both received their prescription drugs and performed eight weeks of supervised exercise at home (three sessions per week, 30–45 min in each session). The control group received only the necessary treatments prescribed by their physician,Dependent variables included chest width and depth (using a caliper), craniovertebral angle (using a goniometer), and thoracic kyphosis (using a flexible ruler), and were measured in pre-posttest sessions. Also, a spirometry test was performed to record the FEV1, FVC, SPO2, and FEV1/FVC ratio.