Technique of Restriction of Blood Flow Associated With the Ergonomic Cycle of Upper Limbs in Women
Condition: Women's Health: Female Athlete/Female Athlete Triad
MeSH terms: Female Athlete Triad Syndrome
Study type: Interventional

Summary: 
      Finding alternatives to improve variables such as strength and anaerobic resistance is a
      subject of highly studied clinical intervention. The use of vascular occlusion associated
      with physical exercise has shown efficacy in improving these aspects.

      The objective is to analyze the effectiveness of upper limb training with vascular occlusion
      (Kaatsu training) for the improvement of isometric strength and anaerobic capacity in women
      aged 18 to 38 years.

      Study design. Randomized, prospective, single-blind, follow-up clinical study. The selected
      sample will be randomized into two groups: experimental and control. The intervention will
      consist of ergonomic exercises with and without vascular occlusion. Isometric strength will
      be assessed with a manual dynamometer, anaerobic capacity and peak power (anaerobic alactic
      system) and average power (anaerobic lactic system) with the wingate test, and subjective
      perception of effort with the Borg scale. The intervention will last 4 weeks, with 3 weekly
      sessions of 10 minutes each. A descriptive statistical analysis will be carried out among the
      dependent and independent variables of both groups. With the Kolmogórov distribution
      normality test and with the Anova and t-student tests for analysis of repeated measures.

      Expected results. The investigators intend to observe improvement of isometric biceps and
      triceps strength and the anaerobic capacity of the group treated with vascular occlusion.
    

Detailed description: 
      The use of peripheral vascular occlusion in low intensity resistance exercises is a simple,
      safe and effective method, indicated for healthy individuals or with cardio-respiratory
      diseases, in the prevention of atrophy due to disuse, within the post rehabilitation
      approach. -surgical intervention and to improve the performance of athletes. Several studies
      evaluated the use of blood flow restriction prior to aerobic and anaerobic exercises, with
      heterogeneous results, without consensus. With this, our research proposal is a pioneer, as
      there is no other study that has investigated the use of upper limb vascular occlusion during
      anaerobic activity in an arm ergometer cycle. This could benefit individuals who need to
      maintain their anaerobic conditioning and who, for some reason, are unable to use the lower
      limbs. In addition, it could benefit in the performance and improvement of the physical
      fitness of athletes in wheelchairs of various modalities, which have their functions
      preserved in the upper limbs. Only a similar study showed the efficacy of this intervention
      model, but in lower limbs. The prevalence of men in published studies of anaerobic capacity
      with the WinGate test, with few studies recruiting women, indicates the need to perform the
      study with a female sample.
    

Intervention name(s): Experimental group; Control group
Intervention type(s): Other; Other
Intervention description(s): The intervention lasted 17 minutes each session, 2 weekly sessions were carried out, during 4 weeks. The training started with a warm-up on the hand bike without a load for 5 minutes. Later, we did a work of 3 series of 30 seconds, in maximum power, with 5 minutes of rest between them. The intensity was calculated by 0.048 kp.kg.
The subjects of the experimental group made use of the restriction of blood flow, using a pressure cuff coupled in the most proximal region of the arm, 10 cm wide. The pressure was calculated based on the initial systolic pressure of the subjects.; The intervention lasted 17 minutes each session, 2 weekly sessions were carried out, during 4 weeks. The training started with a warm-up on the hand bike without a load for 5 minutes. Later, we did a work of 3 series of 30 seconds, in maximum power, with 5 minutes of rest between them. The intensity was calculated by 0.048 kp.kg.
The subjects in the control group did not use pressure cuffs.
Allocation: Randomized
Intervention model: Parallel Assignment
Masking: Single (Outcomes Assessor)
Primary purpose: Treatment
Keywords: Restriction of blood flow; Anaerobic capacity; Subjective perception of effort; Wingate; Isometric strength