Neuromuscular, Physiological and Performance Changes After an Acute and Chronic Training Protocol Associated to the Inter-set Velocity Loss
Overview
- Phase
- N/A
- Intervention
- Not specified
- Conditions
- Healthy
- Sponsor
- Alejandro Muñoz López
- Enrollment
- 30
- Primary Endpoint
- Contraction time
- Last Updated
- 6 years ago
Overview
Brief Summary
This study evaluates different performance, physiological and neuromuscular changes after acute and chronic resistance training intervention in physically active men. The participants will train with a single exercise (full squat) and will be monitored with a linear encoder. The experiment will consist of between 3 to 6 sets between 70% to 85% of 1RM in the full squat exercise. Two main groups will form the intervention: one group will perform inter-set repetitions until there will be a 20% of velocity loss compared to the first repetition, while the second group will have a 40% of velocity loss.
Detailed Description
The main dependent variables and instruments will be: 1. Tensyomiography: neuromuscular properties of the vastus lateral (VL), rectus femoris (RF) and vastus medialis (VM) from the dominant leg. 2. Force platform: kinetic variables in relation to a countermovement jump. 3. Near-infrared spectrography: oxygen saturation in the VL and VM. 4. Termographic camera: low limbs temperatura. 5. Linear encoder: mean propulsive velocity from each repetition 6. Electromyography: amplitude and frequency parameters related to a knee extension maximum voluntary contraction test. 7. Strain gauge: maximum isometric force.
Investigators
Alejandro Muñoz López
Associate Professor
University of Seville
Eligibility Criteria
Inclusion Criteria
- •To be healthy
- •Without injuries or actual illnesses
- •More than 2 years of experience in resistance training or federative sports
Exclusion Criteria
- •To be sick or injured
- •To have programmed during the intervention phase a dramatic change in the lifestyle
Outcomes
Primary Outcomes
Contraction time
Time Frame: 7 weeks
Time between 10% to 90% on the displacement-time curve assessed with the Tensiomiograhpy
Maximum displacement
Time Frame: 7 weeks
Maximum displacement point the displacement-time curve assessed with the Tensiomiograhpy
Secondary Outcomes
- Muscle temperature(7 weeks)
- Muscle tissue oxygen(7 weeks)
- Peak isometric force(7 weeks)
- Kinetic variables in the jump(7 weeks)
- Mean propulsive velocity(7 weeks)
- Amplitude (RMS) and frequency outputs(7 weeks)