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.
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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
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发表时间:
1992
期刊:
影响因子:
--
通讯作者:
Mark,AL
中科院分区:
文献类型:
--
作者:
Sinoway,LI;Rea,RF;Mosher,TJ;Smith,MB;Mark,AL
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.
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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
影响因子:
20.1
作者:
C. Apstein;M. Mueller;W. Hood
通讯作者:
W. Hood
影响因子:
37.8
作者:
M. Fifer;P. Bourdillon;B. Lorell
通讯作者:
B. Lorell