Hydrogen ion concentration is not the sole determinant of muscle metaboreceptor responses in humans.

Hydrogen ion concentration is not the sole determinant of muscle metaboreceptor responses in humans.
复制标题

氢离子浓度并不是人类肌肉代谢感受器反应的唯一决定因素。

DOI:
10.1172/jci115792
复制
发表时间:
1992
期刊:
The Journal of clinical investigation
影响因子:
--
通讯作者:
Mark,AL
Mark,AL
中科院分区:
--
文献类型:
--
作者:
Sinoway,LI;Rea,RF;Mosher,TJ;Smith,MB;Mark,AL

文献摘要

参考文献

被引文献

相似文献

我们研究了运动调节对握握和握后循环停止(PHG-CA)时肌肉交感神经活动(MSNA)的影响。研究了两种条件反射刺激:前臂优势和健美。在30%最大自主收缩时进行静态握力,然后进行PHG-CA,导致优势前臂的MSNA比非优势前臂小(99%比222%,P小于0.02),而健身者的MSNA比正常志愿者小(28%比244%,P小于0.01)。单独的31P核磁共振实验显示,在PHG-CA期间,优势对前臂pH值没有影响,但健美运动员的pH值(6.88)高于正常志愿者(6.79;P小于0.02)。我们的第二个目标是确定除[H+]衰减外的其他因素是否有助于这种调节效应。如果在相同的pH值下观察到运动过程中MSNA的差异,那么一定有其他机制对训练效果起作用。我们测量了缺血疲劳握握时的MSNA。没有发现对pH值的支配或健美作用。然而,我们注意到优势前臂的MSNA增幅小于非优势前臂(212%比322%,P < 0.02),而健美运动员的MSNA增幅小于正常志愿者(161%比334%,P < 0.01)。总之,在条件肢体运动期间,MSNA反应较少。除了减轻肌肉酸中毒外,其他因素也有助于这种效果。
We examined the effects of exercise conditioning on muscle sympathetic nerve activity (MSNA) during handgrip and posthandgrip circulatory arrest (PHG-CA). Two conditioning stimuli were studied: forearm dominance and bodybuilding. Static handgrip at 30% maximal voluntary contraction followed by PHG-CA led to a rise in MSNA smaller in dominant than in nondominant forearms (99% vs. 222%; P less than 0.02) and in body builders than in normal volunteers (28% vs. 244%; P less than 0.01). Separate 31P NMR experiments showed no effect of dominance on forearm pH but a pH in bodybuilders higher (6.88) than in normal volunteers (6.79; P less than 0.02) during PHG-CA. Our second goal was to determine if factors besides attenuated [H+] contribute to this conditioning effect. If differences in MSNA during exercise were noted at the same pH, then other mechanisms must contribute to the training effect. We measured MSNA during ischemic fatiguing handgrip. No dominance or bodybuilding effect on pH was noted. However, we noted increases in MSNA smaller in dominant than nondominant forearms (212% vs. 322%; P less than 0.02) and in bodybuilders than in normal volunteers (161% vs. 334%; P less than 0.01). In summary, MSNA responses were less during exercise of conditioned limbs. Factors aside from a lessening of muscle acidosis contribute to this effect.
20世纪80年代以来家庭消费和资产的实证分析
DOI: --
发表时间: 2006
期刊: 総務省統計研修所 リサーチペーパー 第5号
影响因子: --
作者:
元山 斉;山口 幸三;ryoko Morozumi;美添泰人・荒木万寿夫
通讯作者: 美添泰人・荒木万寿夫
DOI: 10.1016/s0002-9343(84)80006-6
发表时间: 1984
期刊: The American journal of medicine
影响因子: --
作者:
Morgan,JP;Morgan,KG
通讯作者: Morgan,KG
DOI: 10.1152/ajpheart.1981.240.3.h413
发表时间: 1981
期刊: The American journal of physiology
影响因子: --
作者:
Edwards2nd,CH;Rankin,JS;McHale,PA;Ling,D;Anderson,RW
通讯作者: Anderson,RW
心室挛缩和顺应性随整体缺血和再灌注的变化,及其对大鼠冠状动脉阻力的影响。
DOI: 10.1161/01.res.41.2.206
发表时间: 1977
影响因子: 20.1
作者:
C. Apstein;M. Mueller;W. Hood
通讯作者: W. Hood
主动脉瓣狭窄患者起搏诱发心绞痛期间左心室舒张特性发生改变。
DOI: --
发表时间: 1986
期刊: Circulation
影响因子: 37.8
作者:
M. Fifer;P. Bourdillon;B. Lorell
通讯作者: B. Lorell