The effect of acute low-load resistance exercise with the addition of blood flow occlusion on muscle function in boys and men

Purpose In adults, low-load resistance training with blood flow occlusion (BFO) mimics strength increases that occur from high-load training, without the need to experience high mechanical stress. In view of child–adult differences in exercise responses, this study examined whether BFO during exerci...

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Bibliographic Details
Published in:European journal of applied physiology 2021-08, Vol.121 (8), p.2177-2185
Main Authors: Bax, Alyssa M., Amiaka, Chimerem O., Falk, Bareket, Gabriel, David A., Tokuno, Craig D.
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Biomedicine
Blood flow
Children
Children & youth
Contraction
Electromyography
Exercise
Force
Health sciences
Human Physiology
Load
Motor units
Muscle function
Occlusion
Occupational Medicine/Industrial Medicine
Original Article
Physical fitness
Physical training
Physiology
Sports Medicine
Strength training
Wrist
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Summary:Purpose In adults, low-load resistance training with blood flow occlusion (BFO) mimics strength increases that occur from high-load training, without the need to experience high mechanical stress. In view of child–adult differences in exercise responses, this study examined whether BFO during exercise elicits differential changes in maximal voluntary contraction (MVC) and electromyographical (EMG) activity in children and adults. Methods Sixteen men (24.4 ± 2.5 years) and 14 boys (10.7 ± 2.0 years) performed low-load resistance exercise (25 repetitions at 35% MVC) of the wrist flexors with and without BFO. MVC wrist flexor force and EMG activity of the flexor carpi radialis (FCR) were obtained at the beginning and end of the exercise. Results Both groups demonstrated a larger decrease in MVC force following BFO (− 18.6 ± 12.5%) than the control (without BFO) condition (− 6.2 ± 15.0%; p  
ISSN:1439-6319
1439-6327
DOI:10.1007/s00421-021-04687-4