Increase in neuromuscular activity and oxygen uptake during heavy exercise.
Increase in neuromuscular activity and oxygen uptake during heavy exercise.
复制标题
剧烈运动时神经肌肉活动和摄氧量增加。
DOI：
--
复制
发表时间：
1992
期刊：
影响因子：
--
通讯作者：
TOShiO MORITANl
中科院分区：
文献类型：
--
作者：
M. SHlNOHARA;TOShiO MORITANl
为探讨神经肌肉活动对大负荷运动时VO 2缓慢增加的贡献，对7名受试者进行了持续7 min的恒负荷自行车运动，强度分别为阈下10%和阈上30%，比较了优势肌和VO 2的积分肌电图（iEMG）。上述VT试验中第4 min后的VO 2与iEMG显著相关（r = 0.53，p <0.01），并且VO 2/iEMG在第4 min后保持恒定，表明iEMG与VO 2耦合。结果提示，大负荷运动时VO 2缓慢增加可能是运动单位募集方式改变的结果。
: In order to examine the contribution of neuromuscular activity to the slow increase in VO2 during heavy exercise, integrated electromyogram (iEMG) of dominant working muscle and VO2 was compared in seven subjects during constant-load cycling exercise at the intensity of 10% below and 30% above ventilatory threshold (VT) for seven minutes. VO2 and iEMG after 4th min in above VT test was significantly correlated (r = 0.53, p less than 0.01) and VO2/iEMG was constant after 4th min, indicating coupling of iEMG with VO2. The results suggested that the slow increase in VO2 during heavy exercise may result from the changes in the recruitment pattern of motor units.