Experimental studies concerning the effects of sympathetic nerve activity on muscular contracting performance

交感神经活动对肌肉收缩性能影响的实验研究

• 批准号: 61580121
• 负责人: SAITO MITSURU
• 金额: $ 1.22万
• 依托单位: Toyota Technological Institute
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-61580121/
• 关键词: muscle sympathetic nerve activity; microneutography; static and dynamic muscle contraction; percived exertion; 律動的筋収縮; 疲労感覚; 主観的運動強度; 抗疲労作用; 筋疲労; 主観的疲労感覚; 微小神経電図; 金属微小電極

The purpose of this study was to investigate the eddects of sympathetic nervous system on exercise performance. Muscle sympathetic nerve activity (MSNA) was recorded using a tungsten microelectrode from rthe tibial nerve at politeal fossa without anaethesia, and was represented quantitatively as the number og burst discharges per one minute (burst rate: BR). Static and rhythmic handgrip exercises as volumntary muscle contractions were performed using an electrodynamometer and a hanfergometer.Results: (1) Respondse in MSNA to static handgrip at various tensions: Muscle sysmpathnetic nerve activity incrteased fduring static handgrip exerise for two minutes as compared to the resting value and incteased more during higher tension of handgrip. (2) Relationship berwrrn rate in muscle fatigue sensation (RMFS) and sympathetic nerve responese in static and thythmic handgrip exercises: During exhaustive muscle contractions, MSNA-BR inctresed during both the static and dynamic hendgrip as compar … More ed to the values before the exercise, which increased more in parallel with the contracting time. Also RMFS enhanced gradually until the exhaustion in the two modes of handgrip. There was significant corrtelation between RMFS and MSNA-BR during static and rhythmic handgrips. (3) Relationship between calf blood flow and MSNA during sustained handgrip: Calf blood blow datermined by vemous occlusion plethysmography dectreased during handgrip. at the same time, contrarily, MSNA recorded from the same leg increased. Threr was significant correlation between the calf blood flow and MSNA-BR.Conclusions: First, it is suggested that MSNA is activeted not only by afferent nerve impulses from the active muscle byt by descending nerve impulses from the motor center. Second, the increase in sympathetic outflow to the resting muscles may play an importnat role in elevating the perfusion pressure to the active muscles to compensate for the increased intreamuscular pressure due to contracion. Third, the significant correlation between MSNA-BR and RMFS may indicate a possibility of anti-fatigue action of MSNA poointed out by orbeli in 1923 Less

这项研究的目的是调查交感神经系统对运动表现的质谱。使用来自polythe fossa的Rthe Rthe rthe rthe rthe thice fossa的钨微电极记录肌肉交感神经活动（MSNA），而无需无隔离，并定量表示为每分钟的数量OG爆发放电（爆发速率：BR）。静态和节奏的手夹练习是使用电型肌肉收缩和汉夫测计进行的。回报：（1）在MSNA中响应各种紧张局部的静态手夹：肌肉sysmpathnetic神经神经活动的fd静态手工径流增加了两分钟的静态手段，而在较高的手持下增加了较高的静止价值，并且在静止的价值上增加了较高的费用。 （2）肌肉疲劳感（RMF）的关系率（RMFS）和静态和肌动式手工练习中的交感神经反应：在详尽的肌肉收缩期间，在静态和动态Hendgrip期间，MSNA-BR与练习之前的静态和动态Hendgrip相比，与锻炼的值相比更多，这与合同时间相似。 RMF也逐渐增强，直到两种手工夹的疲惫。在静态和节奏手夹期间，RMFS和MSNA-BR之间存在显着相关性。 （3）在持续的手绘过程中，小腿血流与MSNA之间的关系：小牛血吹，在手夹期间引起的闭塞散布散布。同时，相反，从同一腿记录的MSNA增加了。小腿血流与MSNA-BR.Conconclusions之间的趋势是显着的相关性：首先，建议MSNA不仅通过从运动中心下降神经冲动来激活的肌肉的传入神经冲动。其次，交感神经流向静息肌肉可能在升高活性肌肉的灌注压力方面发挥重要作用，以补偿由于收缩而增加的肌内压力。第三，MSNA-BR和RMF之间的显着相关性可能表明Orbeli在1923年储存的MSNA的抗胖子作用可能更少

项目成果

齋藤満: 日本体育学会第38回大学号(B). 586 (1987)

Mitsuru Saito：日本体育学会第 38 期大学号 (B) 586 (1987)。

SAITO MITSURU: "Relationship between calf blood flow and muscle sympathetic nerve activity during static muscle contractions" Proceeding of the Japan Society of Physical Education. 586 (1987)

SAITO MITSURU：“静态肌肉收缩时小腿血流量与肌肉交感神经活动之间的关系”日本体育学会会刊。

齋藤満: 疲労と休養の科学. 2. 97-105 (1987)

Mitsuru Saito：疲劳与休息的科学。2. 97-105 (1987)。

SAITO MITSURU: "Relationship between rate in muscle fatigue sensation and sympathetic nerve responses in static and dynamic muscle contractions" Japanese Jounal of Physical Fitness and Sports medicine. 36. 376 (1987)

SAITO MITSURU：“静态和动态肌肉收缩时肌肉疲劳感速率与交感神经反应之间的关系”《日本体能与运动医学杂志》。

Saito Mitsuru: American Journal of Physiology.

斋藤满：美国生理学杂志。