Effects of muscular calibrated exercise in a heated environment on a pointing task by football players.
Effects of muscular calibrated exercise in a heated environment on a pointing task by football players.
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DOI：
10.1016/s0765-1597(97)86908-0
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发表时间：
1998-01-01
期刊：
影响因子：
1.1
通讯作者：
Keller, D
中科院分区：
文献类型：
--
作者：
Ernwein, V;Keller, D
我们试图评估肌肉校准运动的后果，在加热的环境中进行，在指向任务。我们假设，在热的物理负荷将有一个显着的影响决策过程（间接标记是选择反应时间）和运动的持续时间。我们还考虑了一些生物能量适应机制（心率，食道和皮肤温度）的演变。五个足球和橄榄球运动员必须执行指向任务之前，期间和之后的努力，在50%和80%的有氧最大功率的自由踩踏板。结果表明，运动对决策模式有影响，而外源性热对决策模式无影响。可以认为，这些观察结果并没有反映出执行的更外围方面的故障，而是难以识别对运动程序相关组件的访问。此外，反应时间稳定的阈值的存在，表明一个新的平衡状态的出现，表明时间是一个受控的参数，而不是一个简单的人工制品所产生的努力。虽然反应时间的稳态水平与工作负荷有关，但破裂的时间位置几乎保持不变。此外，我们很可能不得不使用一个高级调节系统，不仅控制与手势产生密切相关的参数，还控制一些生理变量：例如，心率遵循与选择反应时间相同的变化曲线。(C)1998年，爱思唯尔，巴黎。
We attempted to assess the consequence of a muscular calibrated exercise, performed in an heated environment, on a pointing task. We made the hypothesis that the physical load in heat would have a significant effect on the decisional processes (the indirect marker being the choice reaction time) and on the duration of the movement. We also took into account the evolution of some bio-energetic adaptive mechanisms (heart rate, esophageal and cutaneous temperatures). Five football and rugby players had to perform a pointing task before, during and after an effort at 50% and 80% of their aerobic maximal power of free pedaling. The results showed that the decision patterns are affected by the muscular exercise but not by the exogenous heat. It can be suggested that these observations did not reflect a breakdown of the more peripheral aspects of the execution, but rather difficulty to identify the access to the relevant component of motor program. Further, the presence of a threshold of reaction time stabilization, indicating the appearance of a new state of equilibrium, suggested that time is a controlled parameter, and not a simple artifact of the produced exertion. Though the level of steady state of reaction time was linked to the load of the work, the time location of the rupture remained almost invariant. Moreover, it is likely that we had to use a high-level regulative system, not only controlling the parameters closely related to the production of the gesture, but also some physiological variables: for instance, heart rate followed the same profile of variation than choice reaction time. (C) 1998, Elsevier, Paris.