ArticleFrontiers in sports and active living2026
Effects of blood flow restriction combined with low-load resistance training on obstacle-crossing performance and lower limb function in older adults.
Article in Frontiers in sports and active living, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Obstacle crossing is a demanding locomotor task for older adults and may be particularly sensitive to training-related changes in lower-limb function and balance-related performance. This study compared the effects of blood flow restriction combined with low-load resistance training (BFR-LLRT) and low-load resistance training alone (LLRT) on obstacle-crossing performance, neuromuscular activation, and balance-related outcomes in older adults. Methods: Forty community-dwelling older adults aged 60 years or above were randomly assigned to an LLRT group or a BFR-LLRT group and completed an 8-week intervention. Before and after training, participants were assessed for lower-limb muscle activation using surface electromyography, balance performance using computerized dynamic posturography, and obstacle-crossing characteristics using three-dimensional motion capture. Results: Both groups showed changes or improvements in selected neuromuscular, obstacle-crossing, and balance-related outcomes after training. Compared with LLRT alone, BFR-LLRT was associated with a greater increase in ankle co-activation before heel strike, a greater increase in trailing-limb toe clearance, and a larger increase in crossing velocity. Leading-limb toe clearance increased significantly in both groups, but the group × time interaction did not reach statistical significance. In balance testing, BFR-LLRT was associated with greater improvements in selected mediolateral rhythmic weight-shift conditions. However, weight-bearing symmetry showed angle-dependent and mixed responses: asymmetry increased at 30° and 60° knee flexion in the BFR-LLRT group, indicating poorer symmetry at these angles, whereas symmetry improved at 90°. Conclusion: BFR-LLRT may provide additional benefits over LLRT alone for selected aspects of laboratory-based, task-specific lower-limb function in older adults, particularly during more demanding components of obstacle crossing and dynamic balance control.
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