Medical Journal of Bakirkoy, cilt.21, sa.2, ss.163-171, 2025 (ESCI)
Objective: To compare the effects of low-intensity resistance training with blood flow restriction (LRT-BFR) and high-intensity resistance training (HI-RT) on triceps brachii muscle thickness and muscle strength, functional performance, and delayed-onset muscle soreness (DOMS). Methods: Thirteen sedentary women performed two unilateral exercise protocols three days a week for six weeks. Participants were randomly divided into two groups according to exercise protocols. One group of participants performed LRT-BFR while the other performed HI-RT. The LRT-BFR group performed four sets [20-30% of 1 repetition maximum (1RM)]; and the HI-RT group performed three sets, 70-80% of 1RM. The two exercise protocols were performed in different sessions on the same day. Triceps brachii muscle thickness, triceps brachii, and biceps brachii muscle strength, upper extremity functional performance, and DOMS were evaluated before and after training. Results: A statistically similar increase was observed in muscle thickness and strength (60°xs-1), after exercise in both groups (p<0.05) but a greater increase in muscle strength (180°xs-1) was obtained in the LRT-BFR group (p<0.05). There is no statistical difference between the groups for the upper-quarter Y balance test score and DOMS (p<0.05). Conclusion: LRT-BFR had similar effects as HI-RT on muscle thickness and strength, functional performance, and DOMS. Where HI-RT cannot be used, we LRT-BFR is a viable alternative.