(1) Background: It is a matter of curiosity what effect the blood flow restriction (BFR) method, which is usually combined with low-intensity resistance exercises, will have when used with high-intensity eccentric exercises. (2) Methods: The present study examined the effects of combining BFR with nordic hamstring exercises (NHEs) on hamstring muscle strength, bilateral deficit (BLD), and training volume. Thirty young female volleyball players, who trained three times a week, participated voluntarily in the study. These players were stratified into three groups, each comprising ten individuals: a control group (CG), an NHE group, and an NHE + BFR group. Hamstring muscle strength and BLD values were determined using an H-BORD device, while training volume was measured in terms of sets and repetitions. (3) Results: Statistical analysis revealed that there were no statistically significant differences in non-dominant and dominant leg peak torque parameters in the exercise groups (F = 2.65; p = 0.097; η_p² = 0.17; F = 1.15; p = 0.0334; η_p² = 0.084), while the total training volume was lower in the NHE + BFR group. (4) Conclusions: As a result, it was seen that adding the BFR method to NHE did not provide additional gains. However, due to the low training volume of BFR + NHE, it may be recommended to apply BFR together with NHE to athlete groups.

Background The aim of this study is to investigate the effects of low-intensity cycling exercise combined with blood flow restriction (BFR) on VO₂max, muscle strength, and muscle thickness. Methods Twenty-four sedentary male participants volunteered for the study and were divided into three groups, each consisting of eight individuals: cycling exercise group (CEG; 40% VO₂max, 40 minutes), cycling exercise with blood flow restriction group (CBFRG; 40% VO₂max, limb occlusion pressure (LOP) at 60–80%, 15 min), and control group (CG; 40% VO₂max, 15 minutes). The isokinetic knee strength parameters, muscle thickness, and VO₂max values of participants were measured twice, at the beginning of the study and at the end of the ninth week. Data were analysed using two-way repeated measures ANOVA. Results The analysis revealed significant improvements in muscle thickness and VO₂max parameters favouring post-tests for both the CEG and the CBFRG. In inter-group comparisons, significant advantages for the CBFRG were identified in the respiratory exchange ratio (RER) and vastus lateralis (VL) muscle thickness in both legs. Other parameters showed similar improvements across the groups. Additionally, peak torque (PT) at an angular velocity 180°^s−1 in the left leg quadriceps (Q, F = 5.53; p = 0.021; η²=0.34) and mean power (MP) in the right leg quadriceps demonstrated significant benefits for the CBFRG. Conclusions The study concludes that low-intensity cycling combined with BFR significantly enhances VO₂max, muscle strength, and muscle thickness, with improvements comparable to those obtained from high-intensity cycling exercises. Therefore, low-intensity cycling exercise with BFR can be considered a robust alternative to traditional high-intensity cycling exercises. Trial registration: Current Controlled Trials NCT07114835 08/08/2025

Background The study compared the effects of paired Nordic hamstring exercises (NHE) and resistance band NHE on hamstring muscle strength and bilateral strength difference (BLF) in taekwondo athletes. Methods Thirty-two athletes who trained in taekwondo three days a week participated in the study. The participants were divided into three groups: a control group that only did taekwondo training [CG, (n = 12)], a group that did paired NHE in addition to taekwondo training [PNHG, (n = 10)], and a group that did resistance band NHE in addition to taekwondo training [RBNHG, (n = 10)]. While the CG continued with routine taekwondo training, the PNHG and RBNHG groups performed NHE three days a week for six weeks in addition to their taekwondo training. The athletes' hamstring muscle strength and BLF values were determined using the H BORD device. To examine the results of different protocols, pre- and post-test measurements, and the protocol*time interaction effect, a two-way ANOVA test was used for repeated measurements. Results Statistical analysis revealed that both PNHG and RBNHG showed an increase in hamstring muscle strength in the final tests. While no significant difference was observed between PNHG and RBNHG in terms of hamstring muscle strength development, it was determined that RBNHG had a igher percentage of development. Additionally, it was observed that the training volume of RBNHG was higher than that of PNHG. Conclusions When performing NHE, it is recommended to use a resistance band to ensure the correct position, to increase the duration of tension during NHE, and to extend the hamstring breakpoint in NHE.