Orthopedic Manual Therapy vs Foam Roller on Flexibility, Joint Range of Motion, rm and Vertical Jump

Primary outcomes

1. Flexibility

   Time frame: Up to twelve weeks

   The sit and reach or Wells test is a test commonly used to measure the flexibility of the hamstring muscles and the posterior muscles in general (Mayorga-Vega et al., 2014). This test will be carried out following the guidelines of the American College of Sports Medicine (American College of Sport Medicine [ACSM], 2000). This test consists of placing the person evaluated sitting on the floor in front of a box with their feet resting on it without any type of footwear, keeping their knees fully extended, on the box there is a plate with a tape measure on which the person evaluated must place their hands, later they will perform a maximum trunk flexion trying to cover the greatest possible distance with their upper limbs without altering the rest of the position, if the person cannot reach the plate, the missing distance will be measured to be able to contact it and it will be presented as a negative value.

2. Joint range of motion

   Time frame: Up to twelve weeks

   The goniometer pro application available for iphone will be used. This tool has been previously tested and validated in the Latino population (Barboza et al., 2020). For this, the mobile device will be located with a system of straps that will ensure the position of the equipment on the segment to generate the displacement, once the individual is located in the starting position, the initial point will be selected in the application to then carry out the movement. The mobile device will then measure the displacement and give a measurement in degrees (°) that will be recorded.

3. Muscular Power

   Time frame: Up to twelve weeks

   The Optogate will be used, following the CMJ jump test, in which the subject stands in the middle of the instrument's optical led strips, adopts a position of knee and hip flexion where the knee joint forms an angle of 90 °, to ensure that it will be done in this way, it will be measured with a manual goniometer and a rope will be placed to give the subject a stimulus when he is in the correct position. In addition, you must place your hands on the waist and execute the jump in a single movement, fluid and without interruptions, before taking the measurements the subject will be allowed to become familiar with the test, in the first session. On measurement days, 3 jumps will be allowed and the one with the highest score will be considered valid.

4. Muscle strength

   Time frame: Up to twelve weeks

   Strength will be measured through the 1RM test, validated in different populations, regardless of gender or age (Grgic, Lazinica, Schoenfeld, & Pedisic, 2020). For the calculation of 1RM, the subjects will first receive an adaptation session, where they will get used to the gesture with low load so that after 2 days they can perform the real test. The actual test will consist of a warm-up with low resistance performing 10 repetitions of the exercise, then the load will be progressively increased until failure occurs, regardless of the verbal reinforcement given. A repetition will be considered successful when the subject performs the full range of motion without significant fasciculations or compensatory movements. The RM will be determined in 5 attempts for all subjects, all following the guidelines of the National Strength and Conditioning Association (Baechele & Earle, 2008).