This study will be conducted in the Department of physical therapy, College of Applied Medical Sciences,Jazan University, to Effects of Pilates Exercises on core stability after Recovery from COVID - 19

145 male and female students who had infected with covid 19 with age 19 to 26 years old, will be recruited from the College of Applied Medical Sciences, Jazan University. Subjects will be randomly assigned to a pilates and home exercises (PAH) group or a control group who will perform only home exercises (COH)

Four core endurance tests will be performed to assess the core stability

Pilates exercise program will be composed of Pilates mat exercise program for a period of 12 weeks and three sessions every week.

Each session took one hour. Every session started with 10 minutes of simple stretching movements to warm-up followed by the main part of the exercise plan for 40 min, followed by 10 minutes, some cool-down stretching.

When the 12-week study period will over, the core stability will be assessed by the endurance tests and Prokin system for balance

Inclusion Criteria:

1. Persons who had mild to moderate covid- 19 illness.
2. Asymptomatic period of at least seven days (without chest pain, breathlessness).
3. No musculoskeletal damage.
4. No pregnancy.
5. No visually identified asymmetries in the spinal trunk and lower limbs.
6. None of the subjects has a history of balance training
7. Subjects will not have any diseases of the central nervous system.
8. Subjects with body mass index (BMI)<25 kg/m2.

Exclusion Criteria:

1. Persons who had more severe covid 19 illnesses and were hospitalized.
2. Persons who had during their illness chest pain breathlessness, palpitation, symptoms, and signs of heart failure.

9. Subjects with cardiopulmonary disorders. 3. A history of previous back or abdominal surgery/injury 4. Evidence of a systemic or musculoskeletal disease within the past six months

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