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. 2024 May 1:9:20240017.
doi: 10.2490/prm.20240017. eCollection 2024.

Effect of One Session of Muscle Blood Flow Restriction Training Versus Normal Training on Blood Lactate Level

Hiroji Fukuta  1
Affiliations

Effect of One Session of Muscle Blood Flow Restriction Training Versus Normal Training on Blood Lactate Level

Hiroji Fukuta. Prog Rehabil Med. .

Abstract

Objectives: Blood flow restriction training (BFRT) is useful for improving muscle strength. However, it involves a long training time and is unsuitable for vigorous exercise. Muscle blood flow restriction training (MBFRT), which uses multiple parallel pneumatic cuffs (MPCs) to compress large areas of the extremities and restrict blood flow, was subsequently developed to address these issues. This study compared the effects of MBFRT with normal training (NT).

Methods: Ten healthy adults underwent low-intensity MBFRT. MPC pressure was increased to 200 mmHg just before training. The exercise was a bodyweight half-squat. Three sets of 30 squats were performed. Two weeks later, the participants underwent NT with the same exercise. Blood lactate levels were measured before the start of training and at 1 and 5 min after training. The Borg index was also measured at the end of the training.

Results: The blood lactate level was elevated at 1 min after MBFRT and NT. The elevated blood lactate level was maintained at 5 min after MBFRT, whereas the lactate level was significantly decreased at 5 min after NT. The Borg index at the end of the training was significantly higher in MBFRT than in NT.

Conclusions: Lactic acid accumulates in the muscles during low-intensity MBFRT, thereby initiating type II fiber activity.

Keywords: blood lactate level; multiple parallel pneumatic cuffs; muscle; muscle blood flow restriction training.

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Conflict of interest statement

CONFLICTS OF INTEREST: The author declares no conflict of interest.

Figures

Fig. 1.
Fig. 1.
Blood flow restriction training (BFRT). The base of the limb is compressed with a single cuff. The blood flow is restricted throughout the extremity, which restricts blood flow in the muscles.
Fig. 2.
Fig. 2.
Muscle blood flow restriction training (MBFRT). Large extremities are compressed with multiple cuffs. Pressure is increased in the muscle, resulting in restricted blood flow, as in compartment syndrome.
Fig. 3.
Fig. 3.
Multiple parallel pneumatic cuffs (MPCs) comprise three parallel pneumatic cuffs connected to each other across a total width of 20 cm. The MPCs are connected to a pump and a pressure-regulating airbag.
Fig. 4.
Fig. 4.
Bodyweight half-squat exercise performed in this study. The participants held knee extensions and 90° knee flexions for 1 s each.
Fig. 5.
Fig. 5.
Mean blood lactate levels (n=10) before and soon after NT and MBFRT.
See this image and copyright information in PMC

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