Effects of low-intensity strength training on hypertrophy
Conditions
Interventions
Group 1: Intermittent Blood-flow restriction training (4 sets, 20%RM, 30-15-15 reps, 30sec pause, 80% occlusion pressure), restriction only during resting intervals.
Group 2: Continuous Blood-flow res
Sponsors
Institut für Sportwissenschaften, Johann Wolfgang Goethe Universität, Frankfurt am Main
Eligibility
Sex/Gender
All
Age
18 Years to 35 Years
Inclusion criteria
Inclusion criteria: Strength training experience (> 2 years)
Exclusion criteria
Exclusion criteria: - Neurological dysfunction (e.g. migraine, headache) - Vestibular disorder (e.g. disturbed balance) - Concentration Disorder - acute or healed injuries of the lower extremities - any soft tissue, orthopaedic or cardiovascular complaints that would be contraindicated in the event of a restriction of blood flow in the lower extremities (e.g. uncontrolled high blood pressure, peripheral arterial occlusive disease, haematological disease, severe hepatic or renal dysfunction) - Taking any medication that has an influence on monoamines (norepinephrine, serotonin, dopamine) (e.g. medication for ADHS)
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The primary objective of the study is to measure strength increase, fatigue tolerance and hypertrophy. The measurements are taken pre, mid (after 3 weeks), and post (after 6 weeks). The maximum force is determined by a maximum force test on the leg press. Fatigue tolerance is determined by a fatigue test (50% RM, maximum number of repetitions until exhaustion). Hypertrophy is determined by ultrasound. | — |
Secondary
| Measure | Time frame |
|---|---|
| The secondary objective of the study is to compare both BFR protocols in terms of rating of perceived exertion (measured by BORG scale) and subjective pain perception (measured by VAS scale). Both parameters were measured mid and post. | — |
Countries
Germany
Contacts
Public ContactCarsten Schwiete
Johann Wolfgang Goethe Universität Frankfurt am Main
Outcome results
None listed