Central and peripheral responses to static and dynamic stretch of skeletal muscle: mechano- and metaboreflex implications.
Central and peripheral responses to static and dynamic stretch of skeletal muscle: mechano- and metaboreflex implications.
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对骨骼肌静态和动态拉伸的中枢和外周反应：机械反射和代谢反射影响。
DOI：
10.1152/japplphysiol.00721.2016
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发表时间：
2017
影响因子：
3.3
通讯作者：
F. Esposito
中科院分区：
文献类型：
--
作者：
M. Venturelli;E. Cé;E. Limonta;A. Bisconti;M. Devoto;S. Rampichini;F. Esposito
被动静态拉伸（SS），循环袖带阻塞（CCO），以及两者的组合（SS + CCO）已被用来研究机械和代谢反射，分别。然而，动态拉伸（DS）单独或与CCO（DS + CCO）组合对相同反射的影响从未被探索过。本研究旨在比较DS、SS、DS + CCO和SS + CCO的中枢和外周血流动力学反应。在10名参与者中，股动脉血流量（FBF），心率（HR），心输出量（CO），和平均动脉压（MAP）进行了评估，在DS和SS的股四头肌有和没有CCO。同时测定CCO下肢血乳酸浓度[La-]。DS和SS的FBF分别显著增加365 ± 98和377 ± 102 ml/min。与基线相比，DS + CCO和SS + CCO期间的充血可以忽略不计（分别为+11 ± 98和+5 ± 87 ml/min）。DS产生显著的、持续的HR和CO增加（0.40秒），而SS诱导钝性和延迟的心脏加速（0.20秒）。CCO后下肢[La-]增加135%。DS + CCO和SS + CCO期间的HR和CO变化与DS和SS单独给药相似。在DS和SS期间MAP显著降低约5%，在DS + CCO中无变化，而在SS + CCO中升高4%。本数据表明与DS相比，对SS的机械反射反应降低（即，不同的HR和CO变化）。SS引起与DS相似的充血。在拉伸和[La-]积累过程中记录的类似的中央血流动力学表明机械反射和代谢反射之间的边缘相互作用。
新&值得注意
不同形式的被动拉伸管理（动态或静态）结合循环袖带闭塞可能会减少或放大机械反射和代谢反射。我们发现，与动态拉伸相比，静态机械反射反应降低。在联合机械和代谢反射刺激过程中，中枢血流动力学没有增加，这暗示了这两种途径之间的边缘相互作用。
Passive static stretching (SS), circulatory cuff occlusion (CCO), and the combination of both (SS + CCO) have been used to investigate the mechano- and metaboreflex, respectively. However, the effects of dynamic stretching (DS) alone or in combination with CCO (DS + CCO) on the same reflexes have never been explored. The aim of the study was to compare central and peripheral hemodynamic responses to DS, SS, DS + CCO, and SS + CCO. In 10 participants, femoral blood flow (FBF), heart rate (HR), cardiac output (CO), and mean arterial pressure (MAP) were assessed during DS and SS of the quadriceps muscle with and without CCO. Blood lactate concentration [La-] in the lower limb undergoing CCO was also measured. FBF increased significantly in DS and SS by 365 ± 98 and 377 ± 102 ml/min, respectively. Compared with baseline, hyperemia was negligible during DS + CCO and SS + CCO (+11 ± 98 and +5 ± 87 ml/min, respectively). DS generated a significant, sustained increase in HR and CO (∼40s), while SS induced a blunted and delayed cardioacceleration (∼20 s). After CCO, [La-] in the lower limb increased by 135%. Changes in HR and CO during DS + CCO and SS + CCO were similar to DS and SS alone. MAP decreased significantly by ∼5% during DS and SS, did not change in DS + CCO, and increased by 4% in SS + CCO. The present data indicate a reduced mechanoreflex response to SS compared with DS (i.e., different HR and CO changes). SS evoked a hyperemia similar to DS. The similar central hemodynamics recorded during stretching and [La-] accumulation suggest a marginal interaction between mechano- and metaboreflex.
NEW & NOTEWORTHY
Different modalities of passive stretching administration (dynamic or static) in combination with circulatory cuff occlusion may reduce or amplify the mechano- and metaboreflex. We showed a reduced mechanoreflex response to static compared with dynamic stretching. The lack of increase in central hemodynamics during the combined mechano- and metaboreflex stimulation implicates marginal interactions between these two pathways.
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DOI：
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发表时间：
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期刊：
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DOI：
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发表时间：
2012
期刊：
American journal of physiology. Heart and circulatory physiology
影响因子：
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作者：
Venturelli,Massimo;Amann,M;McDaniel,J;Trinity,JD;Fjeldstad,AS;Richardson,RS
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影响因子：
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作者：
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