Reliability and Performance Analysis of the Use of Tissue Flossing for Blood Flow Restriction.

Condition(s) studied

Investigational drug(s) / intervention(s)

Tissue Flossing: Tissue Flossing ia a elastic band that when applied exerts an external pressure above or below a muscle or joint of the extremities.

Blood Flow Restriction Cuff: Inflatable device that exerts an external pressure above a muscle or joint of the extremities.

Training Protocol: The lower limb resistance training protocol will follow that recommended in the study by Patterson et al. for resistance training, and will last 4 weeks, with 3 training sessions per week, with a day break between sessions.

Study summary

Blood flow restriction (RFS) is a widely studied technique that combines low-intensity exercise with vascular occlusion, resulting in muscular benefits. However, its application is challenging due to methodological variations and equipment costs. Tissue Flossing (TF) appears as an affordable alternative, but lacks solid scientific evidence.

Eligibility

Primary outcome measure(s)

• Occlusion pressures (AOP, 80% and 40% of AOP) — First and Secund Stage - [Time Frame: baseline]
  To determine the AOP, the Doppler equipment transducer will be used, which will be positioned over the posterior tibial artery to capture the auscultatory pulse. A blood pressure cuff will be fixed to the participant's thigh close to the region of the inguinal fold of the dominant limb, and then with the inflatable region of the cuff on the medial portion of the thigh covering the femoral artery, it will be progressively inflated, waiting 15 seconds every 30 mmHg until the point at which the auscultatory pulse of the tibial artery is interrupted.
• Assessment of arterial flow and diameter — First Stage - [Time Frame: baseline and all subsequent assessments]
  A Sonoline Sienna® vascular ultrasound will be used combined with a 40mm B-mode ultrasonic transducer with a 7.5 MHz linear beam, which will be coated with gel for acoustic contact and positioned longitudinally to the posterior tibial artery, enabling variables to be assessed. Doppler flow measurements of MI (peak systolic velocity \[cm/s\], end-diastolic velocity \[cm/s\] and arterial diameter).
• Perceptual parameter — First and Secund Stage - [Time Frame: baseline and all subsequent assessments]
  The perceptual parameter will be evaluated using a Borg CR10+ scale, representing the perception of discomfort, 0 represents no discomfort and 10 extremely uncomfortable.
• Tissue Flossing Assessment — First Stage - [Time Frame: The subsequent assessments]
  The application of tissue flossing on the leg will be carried out by always passing the elastic tape with 50% of the tape over the next strip, until the end of the elastic tape.
• Weight — First and Secund Stage- [Time Frame: Baseline ]
  It will be collected with a weight balance
• Height — First and Secund Stage- [Time Frame: Baseline ]
  It will be collected with a stadiometer
• Body Fat — First and Secund Stage- [Time Frame: Baseline ]
  It will be collected with a adipometer
• Arterial pressure — First and Secund Stage- [Time Frame: Baseline ]
  It will be collected with a sphygmomanometer
• Perimetry of the dominant lower limb — First and Secund Stage- [Time Frame: Baseline ]
  It will be defined by the Waterloo Footedness
• Limb length — First and Secund Stage- [Time Frame: Baseline ]
  Identified with a measuring tape
• Perceived exertion scale — Secund Stage- [Time Frame: at the end of the training sessions]
  Adapted BORG scale, with 0 being "no effort" and 10 "maximum effort".
• Method preference — Secund Stage- [Time Frame: final evaluation]
  Participants must answer a brief questionnaire about their preference for one of the RFS methods carried out, and justify why they chose it.
• 1 Maximum Repetition Test — Secund Stage- [Time Frame: baseline and final evaluation]
  The participant must be positioned seated on the extension chair with knees and feet hip-width apart, knees at 90° flexion determined by goniometry, hands holding the handles adjacent to the hips and lumbosacral spine in a firm position in contact with the back of the chair. 1 repetition should be performed to familiarize the movement and 10 repetitions to warm up. At the beginning of the test, they will be instructed to maintain a movement pattern and avoid compensation. The RM is then defined by the highest load at which the participant is capable of performing 1 repetition without compensation.
• Myotonometry — Secund Stage- [Time Frame: baseline during follow-up and final evaluation]
  Myotonometry will be assessed using the MyotonPRO® tool, which consists of a portable, wireless and non-invasive device. The measurement will be carried out once, and in each shot, the following myotonometry parameters will be calculated: the state of tension (tone) and biomechanical properties (rigidity and elasticity).
• Ultrasound — Secund Stage- [Time Frame: baseline and final evaluation]
  The assessment of the muscular structure will be carried out using ultrasound images of the participant's lower limbs, which will be captured using BodyMetrix BX-2000. Participants will be assessed in the supine position with legs fully extended and muscles relaxed. The ultrasound transducer will be covered with water-soluble transmission gel and positioned perpendicular to the skin over the muscle.

Trial sites (1)

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