Resistant exercise with blood flow restrictive exercise (BFR-RE) training will be given 2 days a week for 8 weeks. Each exercise session will consist of 4 sets. There will be 30 repetitions in the first set and 15 repetitions in the next 3 sets, for a total of 75 repetitions. There will be a minimum of 30 seconds and a maximum of 60 seconds of rest intervals between sets. Since the application will be performed for the lower extremity muscle groups, a cuff will be placed on the proximal part of the lower extremity. Exercise load will be determined as 20-40% of 1 RM.

Resistant exercise with isokinetic device (ID-RE) training will be given 2 days a week for 8 weeks. During the training, leg press, squat and knee extension movements will be improved by increasing the resistance or changing the position depending on the athlete's condition.

Before providing exercise training, the muscle strength, circumference measurement, joint range of motion, agility and quality of life of female football players will be determined. Muscle strength measurements will be evaluated with the Kineo Intelligent Load Isokinetic Device for the BFR-RE and ID-RE groups. Then, both groups will be given 4 weeks of resistance exercise training. After this training, all evaluations will be made again. After this evaluation, another 4 weeks of training will be given and the evaluations will be re-applied at the end of the 8th week.

The "Informed Volunteer Consent Form" will be read and signed by 30 selected participants.

With Kineo, evaluation of lower/upper extremity and trunk muscles can be made. The device can also be used to provide strength training. The isokinetic method is characterized by movement at a predetermined constant speed regardless of the applied force. The test (single or double-sided) includes 5 consecutive movements with different speed and maximum power connection. Analysis of the graph allows evaluation of the relationship between force, velocity and angle. It allows isokinetic exercise to be performed at all workstations, both in the open chain and in the closed chain. Additionally, with Kineo Biphasic Load, it is possible to distinguish the load between concentric and eccentric phases to reduce muscle effort and make the work safer. Detailed reports on strength, muscle imbalances and all data necessary for continuous monitoring of the rehabilitation process are instantly visible, can be printed or exported in Excel format.

A foldable, non-elastic 7 mm wide tape measure will be used for circumference measurements. The tape measure will not be affected by the tensions during the measurement and the "0" starting part will be in the left hand, the area to be measured with the other hand will be wrapped with the tape measure and the circumference will be measured by placing the "0" point and the measured number side by side rather than on top of each other.

Flexion and extension range of motion (ROM) of the knee was measured in degrees (°) using the "Universal Goniometer". Knee ROM was assessed using a goniometer with the participant lying supine with the heel elevated on a foam roller. Knee extension was measured with participants maximally extending the knee joint and was defined as the difference from 0° extension. Knee flexion was measured with patients bending their knees and lifting their heels toward their hips as far as possible. The pivot point of the goniometer was placed on the lateral condyle of the femur, and the fixed arm was placed on the lateral side of the leg in the direction of the midline of the femur, and the measurement was made so that the movable arm followed the movement of the fibula.