With the advent of the Internet, mobile phones and other electronic devices have become an integral component in everyone's lives, especially students, whether it is to attend classes, make purchases, conduct transactions, or have social interactions . The continuous use of these electronic devices can easily result in abnormal postures . Upper crossed syndrome (UCS) is one of the most frequently cited complications with modern technological life, which is characterized by weakened middle and lower trapezius, scalenes, deep cervical flexors and serratus anterior at the same time as the rhomboids, as well as tightness in the upper trapezius, pectoralis minor and major and levator scapulae muscles . It mainly leads to muscle imbalances, which eventually manifest in both tonic and phasic muscles
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FVC ( liters )
Timeframe: Pre and post 8 weeks
FEV1 ( liters )
Timeframe: Pre and post 8 weeks
FEV1/FVC ( % )
Timeframe: pre and post 8 weeks
PEF ( liters / minute )
Timeframe: pre and post 8 weeks
Expiratory reserve volume ( ERV ) ( Liters )
Timeframe: pre and post 8 weeks
maximum voluntary ventilation (MVV) ( liters/minute )
Timeframe: Pre and post 8 weeks
The inspiratory reserve volume (IRV) ( Liters )
Timeframe: Pre and post 8 weeks