Intervention Research in Exercise Training, German Sports University Cologne, Germany.
J Sports Sci Med. 2023 Mar 1;22(1):44-50. doi: 10.52082/jssm.2023.44. eCollection 2023 Mar.
Chronic blood flow restriction (BFR) training has been shown to improve drop jumping (DJ) and balance performance. However, the acute effects of low intensity BFR cycling on DJ and balance indices have not yet been examined. 28 healthy young adults (9 female; 21.8 ± 2.7years; 1.79 ± 0.08m; 73.9 ± 9.5kg) performed DJ and balance testing before and immediately after 20min low intensity cycling (40% of power at maximal oxygen uptake) with (BFR) and without BFR (noBFR). For DJ related parameters, no significant mode × time interactions were found (p ≥ 0.221, η ≤ 0.06). Large time effects for DJ heights and the reactive strength index were observed (p < 0.001, η ≥ 0.42). Pairwise comparison revealed notably lower values for both DJ jumping height and reactive strength index at post compared to pre (BFR: -7.4 ± 9.4%, noBFR: -4.2 ± 7.4%). No statistically significant mode × time interactions (p ≥ 0.36; η ≤ 0.01) have been observed for balance testing. Low intensity cycling with BFR results in increased (p ≤ 0.01; SMD ≥ 0.72) mean heart rate (+14 ± 8bpm), maximal heart rate (+16 ± 12 bpm), lactate (+0.7 ± 1.2 mmol/L), perceived training intensity (+2.5 ± 1.6au) and pain scores (+4.9 ± 2.2au) compared to noBFR. BFR cycling induced acutely impaired DJ performance, but balance performance was not affected, compared to noBFR cycling. Heart rate, lactate, perceived training intensity, and pain scores were increased during BFR cycling.
慢性血流限制（BFR）训练已被证明可提高纵跳（DJ）和平衡性能。然而，低强度 BFR 循环对 DJ 和平衡指数的急性影响尚未被研究过。28 名健康的年轻人（9 名女性；21.8 ± 2.7 岁；1.79 ± 0.08m；73.9 ± 9.5kg）在进行 20 分钟低强度循环（最大摄氧量的 40%）前后进行 DJ 和平衡测试，同时使用（BFR）和不使用 BFR（noBFR）。对于 DJ 相关参数，未发现模式×时间交互作用（p ≥ 0.221，η ≤ 0.06）。DJ 高度和反应强度指数的时间效应较大（p < 0.001，η ≥ 0.42）。成对比较显示，与预（BFR：-7.4 ± 9.4%，noBFR：-4.2 ± 7.4%）相比，后（post）测的 DJ 跳跃高度和反应强度指数明显降低。在平衡测试中，未观察到模式×时间交互作用（p ≥ 0.36；η ≤ 0.01）。与 noBFR 相比，BFR 下的低强度循环导致（p ≤ 0.01；SMD ≥ 0.72）平均心率增加（+14 ± 8bpm）、最大心率增加（+16 ± 12bpm）、乳酸增加（+0.7 ± 1.2mmol/L）、感知训练强度增加（+2.5 ± 1.6au）和疼痛评分增加（+4.9 ± 2.2au）。与 noBFR 相比，BFR 循环急性地降低了 DJ 表现，但平衡表现没有受到影响。与 noBFR 循环相比，BFR 循环时心率、乳酸、感知训练强度和疼痛评分增加。
