Decreasing workloads in strength training makes it more tolerable for a broad range of people. When designed as blood-flow restriction training, similar gains in strength and muscle mass are achieved compared to traditional training. Adding high training loads to blood-flow restriction training only in the eccentric phase (BFR-ECC) might achieve superior gains in muscle strength while still maximizing tolerability of the training stimuli. This study aims to investigate the acute physiological and perceptual response of blood-flow restriction training with eccentric loading in comparison to traditional eccentric training. The study recruits healthy individuals ≥ 18 years.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
NONE
Enrollment
48
Eccentric blood-flow restriction training
Eccentric free-flow training
University of Zurich
Zurich, Switzerland
minute ventilation
recorded with breath-by-breath analysis
Time frame: During the intervention (i.e., exercise) for 10 minutes
Other variables from breath-by-breath analysis
VO2, VCO2, RER, breath rate, heart rate
Time frame: During the intervention (i.e., exercise) for 10 minutes
Rate of perceived exertion
Numeric rating scale from 0-10. Participants rate perceived leg exertion and perceived respiratory exertion
Time frame: Immediately after the intervention (i.e., exercise)
Near-infrared spectroscopy of the vastus lateralis
Tissue saturation
Time frame: During the intervention (i.e., exercise) for 10 minutes
Delayed onset muscle soreness
Numeric rating scale 0-10 rating intensity of DOMS symptoms
Time frame: 24, 48, and 72 hours after each of the intervention (i.e., exercise)
Feasibility and tolerability
Custom-made questionnaire
Time frame: After study completion (i.e., after the second study visit, up to 2 weeks)
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