Resistance exercise, the Valsalva Maneuver, and cerebrovascular transmural pressure
Resistance exercise, the Valsalva Maneuver, and cerebrovascular transmural pressure
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DOI：
10.1097/00005768-200301000-00011
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发表时间：
2003-01-01
期刊：
影响因子：
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通讯作者：
Findlay, MJ
中科院分区：
文献类型：
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作者：
Haykowsky, MJ;Eves, ND;Findlay, MJ
目的：检查在没有Valsalva动作（VM）的情况下进行抗阻运动（RE）与单独进行VM对收缩压、颅内压（ICP）和脑血管跨壁压（CVTMP）的急性影响（即，对脑动脉和脑血管壁施加压力的重要压力，计算为收缩压减去ICP）。研究方法：本研究的受试者包括7名（平均值+/- SD，年龄：39 +/- 14岁）完全警觉、合作且临床稳定的个体，他们最近接受了各种神经外科手术。在静息、VM期间和次最大（8.0 +/- 3.0 kg，重复18 +/- 10次）单侧二头肌卷曲RE期间测量心率、收缩压、ICP和CVTMP。结果如下：与单侧肱二头肌卷曲RE相比，VM导致ICP显著增加（VM：31 +/- 14 mm Hg vs RE：16 +/- 7 mm Hg，P < 0.05），同时CVTMP降低（VM：106 +/- 22 mm Hg vs RE：132 +/- 14 turn Hg，P < 0.05）。结论：与单独进行VM相比，单侧二头肌卷曲RE导致CVTMP增加更大。
Purpose: To examine the acute effects of resistance exercise (RE) performed without a Valsalva maneuver (VM) versus a VM performed alone on systolic pressure, intracranial pressure (ICP), and cerebrovascular transmural pressure (CVTMP) (i.e., the important pressure that stresses the cerebral arterial and aneurysmal walls and calculated as systolic pressure minus ICP). Methods: The subjects for this study consisted of seven (mean +/- SD, Age: 39 +/- 14 yr) fully alert, cooperative, and clinically stable individuals who recently underwent various neurosurgical operations. Heart rate, systolic pressure, ICP, and CVTMP were obtained at rest, during a VM, and during submaximal (8.0 +/- 3.0 kg performed for 18 +/- 10 repetitions) unilateral bicep curl RE. Results: The VM resulted in a significantly greater increase in ICP (VM: 31 +/- 14 mm Hg vs RE: 16 +/- 7 mm Hg, P < 0.05) with a concomitant decrease in CVTMP (VM: 106 +/- 22 mm Hg vs RE: 132 +/- 14 turn Hg, P < 0.05) compared with unilateral bicep curl RE. Conclusions: Unilateral bicep curl RE results in a greater increase in CVTMP compared to a VM performed alone.