Journal
SCANDINAVIAN JOURNAL OF MEDICINE & SCIENCE IN SPORTS
Volume 23, Issue 2, Pages e114-e120Publisher
WILEY
DOI: 10.1111/sms.12036
Keywords
hypertrophy; dose-response; muscle thickness; KAATSU; occlusion training; strength
Categories
Funding
- European Social Fund
- Junta de Castilla y Leon, Consejeria de Educacion through the P.O. Castilla y Leon
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This study aimed to gain an insight into the adaptations of muscle strength and skeletal muscle thickness after two different volumes of blood flow restriction training (BFRT), and compare them with high-intensity training. The sample was divided into four groups: low-volume, low-intensity BFRT (BFRT LV); high-volume, low-intensity BFRT (BFRT HV); traditional high-intensity resistance training (HIT); and a control group, which maintained their routine activities (CON). Leg extension one repetition maximum (1RM), isokinetic peak knee extension, and flexion torques at 60 degrees/s and 180 degrees/s as well as muscle thickness of the rectus femoris (RF) and vastus lateralis (VL) were assessed at baseline and after 5 weeks of training BFRT LV (7.03%, P<0.05), BFRT HV (6.24%, P<0.05) and HIT (18.86%, P<0.001) groups increased 1RM performance, while no changes were observed in the CON group. Muscle thickness of the RF and VL was increased irrespective of the training group (7.5%, P<0.001; and 9.9%, P<0.001, respectively). We conclude that doubling the exercise volume with BFRT causes no further benefit with muscular size or strength. Although similar increases in muscle thickness were observed between training groups, HIT increased 1RM performance to a greater extent compared to either volume of BFRT.
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