Key result
Low-intensity resistance exercise with blood flow restriction for six weeks improved right composite balance scores compared to moderate-intensity exercise.
Why the study?
Enhancing leg muscle strength in the elderly could reduce fall risk, and low-intensity resistance exercise with blood flow restriction represents a novel alternative to higher-intensity exercise.
Does low-intensity resistance exercise with blood flow restriction improve dynamic balance compared to moderate-intensity exercise in elderly women?
RCT (n=26)
Randomized
No
Does low-intensity resistance exercise with blood flow restriction improve dynamic balance compared to moderate-intensity exercise in elderly women?
Low-intensity resistance exercise with blood flow restriction is a safe and effective alternative to moderate-intensity exercise for improving dynamic balance in elderly women.
Answers are grounded in this paper and cite their sources.
May support BFR-augmented low-intensity training for elderly balance; leaves open efficacy versus moderate-intensity and fall prevention.
Introduction: Enhancing leg muscle strength in elderly could play a crucial role in reducing fall risk. A novel approach to enhance muscular strength involves the use of low-intensity resistance exercises in conjunction with blood flow restriction (BFR), as an alternative to high-intensity exercise. This study aimed to evaluate the effects of low-intensity strength exercise with BFR on lower quarter Y-balance test (LQ-YBT) performance, compare to moderate-intensity strength exercise in elderly female.Methods: The study employed a true experimental randomized design, assessing balance using the LQ-YBT in 26 elderly women over a six-week exercise period. Subjects were divided into two groups: one performing medium-intensity strengthening exercises (≥40-60% 1 RM (Repetition Maximum)) and another engaging in low-intensity strengthening exercises (20-30%1RM) with BFR. The BFR technique involved applying a cuff to the upper third of the thigh with a restrictive pressure of 50 mmHg or 40% Artery Occlusion Pressure, which was released during rest periods.Results: The moderate and BFR groups exhibited notable distinctions in all directions (anterior, posterolateral, posteromedial and composite) for both left and right legs (p<0.001). The disparity in LQ-YBT values between groups was notable in the right anterior (p=0.017), right posterolateral (p<0.001), right composite (p<0.001), left anterior (p=0.007), and left composite (p=0.050) directions.Conclusions: This study showed that low-intensity resistance exercise with BFR for six weeks may yield superior improvements in the LQ-YBT for elderly women compared to moderate-intensity strengthening exercises
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Tinduh et al. (2024) conducted an RCT in Balance impairment and fall risk (n=26). Low-intensity resistance exercise with blood flow restriction vs. Moderate-intensity strength exercise (≥40-60% 1RM) was evaluated on Improvement (delta) in Right Composite Lower Quarter Y-Balance Test (LQ-YBT) score (Cohen's d -1.475, p=<0.001). Low-intensity resistance exercise with blood flow restriction for six weeks improved right composite balance scores compared to moderate-intensity exercise.
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