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首页> 外文期刊>American Journal of Sports Science and Medicine >Effect of Short-Term Exercise on Controlled Force Exertion in Young and Middle-Aged Adults
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Effect of Short-Term Exercise on Controlled Force Exertion in Young and Middle-Aged Adults

机译：短期运动对青壮年中老年人控制力的影响

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It is important to develop a method to accurately measure controlled force exertion (CFE) in order to evaluate coordination of neuromuscular function. This study aimed at examining the effect of short-term exercise on controlled force exertion in healthy young and middle-aged adults. Ten young (mean age = 20.7 y) and 10 middle-aged (mean age = 49.8 y) adults were included in the study. All subjects had a healthy central nervous system and had no disability in terms of motor functions. Also, none had engaged in regular exercise in the year prior to the study. Everyone participated in a general muscle strength training and aerobic exercise program twice a week during a 3-week period. They exerted the grip strength of the dominant hand and adjusted the grip strength based on the changing demand values displayed as a bar chart with a frequency of 0.3 Hz on a computer screen. A sum of errors between the demand values and the grip exertion values for 25 s was used as the evaluation parameter. A two-way analysis of variance (group and period) was used to examine significant differences among the means. Significant differences of variance were calculated to examine individual differences between the two groups by period. The middle-aged group had significantly greater errors than the young group. The errors decreased by approximately 20% in the young group and by approximately 10% in the middle-aged group during the second and third weeks. The variation in the errors in the middle-aged group was significantly greater than that in the young group during each period. In conclusion, we report that a combination of a general muscle strength training and aerobic exercise improves CFE in middle-aged and young adults. This effect is, however, less pronounced in middle-aged adults who also displayed a particularly small interindividual difference in CFE.
机译：为了评估神经肌肉功能的协调性，开发一种精确测量受控力量施加（CFE）的方法非常重要。这项研究旨在检查短期锻炼对健康的年轻和中年成年人控制力施加的影响。该研究包括10名年轻（平均年龄= 20.7岁）和10名中年（平均年龄= 49.8岁）成年人。所有受试者均具有健康的中枢神经系统，并且在运动功能方面没有残疾。此外，在研究之前的一年中，没有人进行定期运动。每个人在3周的时间内每周两次参加一般的肌肉力量训练和有氧运动计划。他们发挥了优势手的抓地力，并根据变化的需求值（以条形图在计算机屏幕上以0.3 Hz的频率显示）来调整抓地力。将需求值和抓地力施加值之间25 s的误差总和用作评估参数。使用方差（组和期间）的双向分析来检验均值之间的显着差异。计算方差的显着差异，以按时期检查两组之间的个体差异。中年组的错误明显比年轻组大。在第二周和第三周，年轻组的误差降低了约20％，中年组的误差降低了约10％。在每个时期中，中年组的误差变化显着大于年轻组。总之，我们报告说，综合肌肉力量训练和有氧运动可以改善中年和青年人的CFE。然而，这种作用在中年成年人中不太明显，他们在CFE中也表现出特别小的个体差异。

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