It is observed that children affected with COVID-19 who are physically inactive or in a sedentary lifestyle may induce and develop childhood obesity (CO). the management of this clinical condition has received very little attention, there is no well-defined exercise protocols or dietary prescription for this special population; therefore, it needs an elaborative trial in this field, so the aim of his study was to find the clinical and biochemical effects of high-intensity aerobic training with a high protein diet in childhood obesity following COVID-19 infection

Inclusion Criteria:

• A positive diagnosis of COVID-19
• Male children
• 5 - 12 years of age Body mass index (BMI).
• Between 85t h to 99th percentiles were considered for childhood obesity.

Exclusion Criteria:

• Subjects with a history of physical training
• Taking medications, recent surgeries.
• Fractures and joint problems in the lower extremity.
• Cardiac and respiratory problems.
• Neurological issues, major psychiatric problems.
• Any other systemic diseases, contraindications for physical training.

Male children.