Effect of multiple set on intramuscular metabolic stress during low-intensity resistance exercise with blood flow restriction.
Effect of multiple set on intramuscular metabolic stress during low-intensity resistance exercise with blood flow restriction.
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DOI：
10.1007/s00421-012-2377-x
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发表时间：
2012-11
影响因子：
3
通讯作者：
Tsutsui, Hiroyuki
中科院分区：
文献类型：
--
作者：
Suga, Tadashi;Okita, Koichi;Takada, Shingo;Omokawa, Masashi;Kadoguchi, Tomoyasu;Yokota, Takashi;Hirabayashi, Kagami;Takahashi, Masashige;Morita, Noriteru;Horiuchi, Masahiro;Kinugawa, Shintaro;Tsutsui, Hiroyuki
我们之前的研究报道了低强度阻力运动中肌肉内代谢应激显著增强联合血流量限制（BFR）；然而，他们没有达到高强度阻力运动所达到的水平。这项研究只进行了一组运动；然而，通常的抗阻运动包括多组休息间隔。因此，我们研究了多组BFR运动时的肌内代谢应激，并与多组高强度阻力运动的结果进行了比较。12名健康的年轻受试者在4种不同的条件下进行3组1分钟的单侧足底屈曲（30次重复），每隔1分钟：低强度（L, 20% 1 RM）和高强度（H, 65% 1 RM），无BFR， L间歇BFR（仅在运动期间）和连续BFR （CBFR，在休息间隔和运动期间）。通过31p磁共振波谱法评估肌内代谢应激（定义为肌内代谢物和pH）和肌纤维募集。IBFR期间肌内代谢物和pH值的变化显著大于L，但显著低于h， CBFR的变化与h相似，且以劈裂Pi峰评价快肌纤维募集与h相似。连续BFR多组低强度阻力运动可以达到与多组高强度阻力运动相同的代谢应激。
Our previous study reported that intramuscular metabolic stress during low-intensity resistance exercise was significantly enhanced by combining blood flow restriction (BFR); however, they did not reach the levels achieved during high-intensity resistance exercise. That study was performed using a single set of exercise; however, usual resistance exercise consists of multiple sets with rest intervals. Therefore, we investigated the intramuscular metabolic stress during multiple-set BFR exercises, and compared the results with those during multiple-set high-intensity resistance exercise. Twelve healthy young subjects performed 3 sets of 1-min unilateral plantar flexion (30 repetitions) with 1-min intervals under 4 different conditions: low intensity (L, 20 % 1 RM) and high intensity (H, 65 % 1 RM) without BFR, and L with intermittent BFR (IBFR, only during exercise) and with continuous BFR (CBFR, during rest intervals as well as exercise). Intramuscular metabolic stress, defined as intramuscular metabolites and pH, and muscle fiber recruitment were evaluated by 31P-magnetic resonance spectroscopy. The changes of intramuscular metabolites and pH during IBFR were significantly greater than those in L but significantly lower than those in H. By contrast, those changes in CBFR were similar to those in H. Moreover, the fast-twitch fiber recruitment, evaluating by a splitting Pi peak, showed a similar level to H. In conclusion, the multiple sets of low-intensity resistance exercise with continuous BFR could achieve with the same metabolic stress as multiple sets of high-intensity resistance exercise.
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影响因子：
2.5
作者：
HENNEMAN, E;SOMJEN, G;CARPENTER, DO
通讯作者：
CARPENTER, DO
DOI：
10.1080/00016470310013680
发表时间：
2003-02-01
期刊：
ACTA ORTHOPAEDICA SCANDINAVICA
影响因子：
--
作者：
Ohta, H;Kurosawa, H;Nakamura, S
通讯作者：
Nakamura, S
影响因子：
3.3
作者：
Suga, Tadashi;Okita, Koichi;Tsutsui, Hiroyuki
通讯作者：
Tsutsui, Hiroyuki
影响因子：
3.3
作者：
Fujita, Satoshi;Abe, Takashi;Rasmussen, Blake B.
通讯作者：
Rasmussen, Blake B.
影响因子：
3.3
作者：
Lanza, IR;Befroy, DE;Kent-Braun, JA
通讯作者：
Kent-Braun, JA