Key result
Increasing exercise load from 20% to 30% 1RM with blood flow restriction significantly increased whole blood lactate (5.5 vs 3.7 mmol/L, P<0.001) with small changes in muscle thickness.
Why the study?
Does exercise load with and without blood flow restriction affect acute changes in muscle thickness and whole blood lactate?
Population
40 participants
Comparison
Exercise with blood flow restriction at varying… vs Exercise without BFR or with different loads
Design
Other
Follow-up
Acute (pre and postexercise)
Authors
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May support modest load increases in BFR training for greater metabolic stress; leaves open translation to hypertrophy or clinical outcomes.
Does exercise load with and without blood flow restriction affect acute changes in muscle thickness and whole blood lactate?
Absolute Event Rate: 5.5% vs 3.7%
p-value: p=<0.001
Exercise load may have a greater influence on acute changes in muscle thickness and metabolic accumulation than the applied relative pressure during blood flow restriction exercise.
Loenneke et al. (2016) studied this question. Exercise with blood flow restriction (BFR) at 30% 1RM vs. Exercise with BFR at 20% 1RM was evaluated on Acute changes in whole blood lactate (WBL) (p=<0.001). Increasing exercise load from 20% to 30% 1RM with blood flow restriction significantly increased whole blood lactate (5.5 vs 3.7 mmol/L, P<0.001) with small changes in muscle thickness.
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